Specify & Build May 2025

May 2025

www.specifyandbuild.co.uk

Exploring practical solutions for today’s built environment challenges

SUSTAINABILITY

& RENEWABLES

EDUCATION

ROOFING &

CLADDING

FLOORS, WALLS

& CEILINGS

LANDSCAPING

01_SB0525.indd 1 24/04/2025 17:10

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www.specifyandbuild.co.uk \\ May 2025

MAY 2025

LETTER FROM

THE EDITOR

EDITOR

SALES

PUBLISHING

DIRECTOR

DESIGN &

MARKETING

MANAGER

ACCOUNTS &

CIRCULATION

THE TEAM

JENNIE WARD

T: 07971 968611

E: jennie@mappedout.media

JIM MOORE

T: 07414 237 853

E: jim@mappedout.media

JAKE ROXBOROUGH

T: 07482 181961

E: jake@mappedout.media

LAURA KING

T: 07891 626272

GEORGIA HENDERSON

E: accounts@mappedout.media

PUBLISHED BY MAPPED OUT MEDIA LIMITED

Registered in England No.

15185328

Registered Offi ce:

The Old Barn, Wood Street,

Swanley, England, BR8 7PA

As we enter May, the construction industry

continues to face a complex mix of challenges and

opportunities. While the market remains fl at, the drive

to innovate and build better has never been more

critical.

In this issue of Specify & Build we’re focusing on some

of the core elements of any building – Roofi ng & Cladding,

Sustainability, and Floors, Walls and Ceilings – highlighting how

each has a crucial role to play in shaping the homes and spaces

of tomorrow. Amid continuing economic pressures and supply

chain uncertainty, it’s clear that sustainability can no longer be an

optional add-on; it must be a fundamental part of how we design,

specify and build.

As the UK strives to meet its net zero targets, incorporating

sustainable materials and methods into housebuilding is

not just good practice – it is essential. From energy-effi cient

cladding systems to low-impact fl ooring solutions, this issue

showcases forward-thinking approaches that prove environmental

responsibility and building performance really can go hand in

hand. The challenge now lies in scaling these solutions across the

industry while maintaining quality and affordability. By embracing

innovation and collaboration, we can move towards a more

resilient, sustainable built environment that’s ready for the future.

We hope this issue offers new insight and inspiration to help you

do just that – and spark fresh conversations among your team and

projects.

All rights reserved. No part of this publication

may be reproduced or transmitted in any

form, without the consent of the publisher

- Mapped out Media Limited. While

every eff ort is made to ensure accuracy,

the publishers do not accept liability for

errors – printing or otherwise – appearing

within this publication (and website). The

views expressed by contributors are not

necessarily those of the editor or publisher.

InstallerSHOW is coming to the NEC in Birmingham

on 24-26 June, bringing 30,000 installers, specifiers

and decision-makers from the heat, air, water and

energy sectors together to find new products,

network and keep up with industry trends. See p12

for more information on how to register for your

FREE ticket.

3

03_SB0525.indd 1 24/04/2025 17:13

16

32

36

22

CONTENTS

06. News

14. New Products

SUSTAINABILITY AND RENEWABLES

16. Hybrid solutions for refurbishment and

regeneration

18. Ancient bricks offer modern sustainability

22. How architects are insulating Passivhaus

buildings

24. Shaping the future of design and retrofit

26. Sustainability and Renewables Products

28. Case Studies

30. New Products

EDUCATION

32. Thermal comfort to boost learning environments

34. Accelerating heat decarbonisation in schools

36. School achieves sustainable solar roofing

38. Research reveals significant solar opportunity

4

04_SB0525.indd 2 22/04/2025 15:58

54

48

58

50

ROOFING AND CLADDING

40. Eaves detailing products offer multiple solutions

42. Roofing and Cladding Case Studies

44. The role of PMMA in sustainable design

46. Keep up with colour trends

48. School enjoys stunning hybrid structured pavillion

50. Robust roofing for The Goods Yard regeneration

52. Case Studies

FLOORS, WALLS AND CEILINGS

54. Fixing structural damage in heritage buildings

56. Raising the bar on productivity, quality

and performance

58. Etex prepares for growth with plasterboard

expansion

60. Fabric-first design is key to thermal efficiency

LANDSCAPING

64. Urban landscaping makes public spaces safer

5

04_SB0525.indd 3 22/04/2025 15:58

May 2025 \\ www.specifyandbuild.co.uk

LATEST NEWS

NEWS \\ INDUSTRY UPDATES

Data reveals scale of UK housebuilding challenge

Planning activity must increase

substantially if the government is

to meet its target of 1.5 million new

homes by 2029, according to the

latest Planning Application Index from

TerraQuest.

Based on applications for new

homes, rather than planning approvals

or completed builds, the Planning

Portal figures analysed give the earliest

indication of housebuilders’ confidence

in the economy generally and the

housing market in particular. They show

an average of 300,232 new homes were

applied for annually over the past five

years – theoretically sufficient to deliver

the government’s target. However, in the

last quarter of 2024, the total number of

plans submitted were 233,811. Given

that it’s unrealistic to expect a 1:1 ratio

between applications, approvals and

subsequent build out, this figure falls well

short of what will be required every year

up to the end of the current parliament.

TerraQuest’s report examines

historical planning application figures

across England over the past five

years, comparing those with verified

housebuilding completions data. Some

95% of all applications in England are

submitted through TerraQuest’s Planning

Portal, providing these early market

indicators.

The picture is one of mixed fortunes –

in the North East, for instance, planning

activity was significantly lower than the

rest of the country, accounting for just

over 3% of all applications submitted

over the past five years. Conversely,

the South East accounted for almost a

quarter over the same period.

SIG Roofing wins SHE award

SIG Roofing has won the ‘Marketing

Campaign of the Year’ award at the

Safety & Health Excellence (SHE)

Awards for its initiative promoting

skin cancer awareness.

In 2024, SIG Roofing partnered

with SKCIN, a charity specialising in

the prevention and early detection

of skin cancer. They carried out

research among roofing contractors

to understand how many considered

sun protection while working

outdoors and followed this with a

training program and awareness

activity across their 107 roofing

branches. All branches were fitted

with sun cream dispensers and free

sun cream giveaways.

“We were thrilled to win the

‘Marketing Campaign of the Year’

award, recognising our ongoing

efforts to promote skin cancer

awareness among our colleagues

and customers,” said Lotty

Pritchard, Marketing Director for SIG

Roofing.

Skin cancer is the most common

cancer in the UK and one of the

biggest killing cancers in the 15-34

age group.

Sustainable construction ‘needs

more than just funding’ support

The success of the UK’s ambitious

sustainable construction goals will

depend on the government and industry

collaborating to address more than

just funding challenges, a construction

leader has warned.

Lee Sleight, CEO of sustainable

building solutions specialist Holcim UK,

has welcomed the announcement of

more funding for social housing, roads

and construction skills, but is warning

the government that addressing these

challenges individually risks leaving the

construction sector trapped in silos.

The call comes after the Government

announced investments of £2bn to boost

affordable and social housebuilding,

£4.8bn for improving roads and £600m

towards training skilled construction

workers. It also comes as planning

permission has been granted to National

Highways to deliver the Lower Thames

Crossing, the organisation’s first new

generation of net-zero focused projects

using low-carbon concrete and steel.

Sleight said collaborative work to

address challenges, such as skills gaps,

funding, and supply of materials, must

be prioritised.

Sleight said: “We welcome the

announcements supporting key areas of

building and infrastructure...to address

some of the key challenges and barriers

to sustainable construction. While it is

positive to see this funding starting to

come through, we have to wait and see

if this brings the desired stimulation of

the UK economy.

“It is important the construction

industry and central and local

governments work together to

implement the best policies to make

a success of delivering sustainable

construction first time. By focusing on

specific areas without addressing the

endemic macro challenges, we risk

missing an opportunity to create the

policies, supply chain and workforce

needed to deliver construction projects

sustainably and at scale.”

Holcim UK has launched a new report

on the subject, Making Sustainable

Construction a Reality, which is online at

www.holcim.co.uk

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Untitled-1 1 07/05/2024 15:42


LATEST NEWS


Build-to-Rent completions enjoy strong year

Build-to-Rent (BtR) completions remain

strong, according to the latest analysis

from the British Property Federation

and Savills, with the total number

of completed BtR homes reaching

127,150 – an uplift of 16% nationally

year on year. This includes more than

55,400 homes completed in London

and 71,700 across the regions, with

regional growth (18%) outpacing the

capital (13%).

Despite this strong delivery, the

number of new starts has fallen behind

and, for the fifth quarter in a row,

completions have outstripped starts on

site, leading to a sharp 14% contraction

in the number of BtR homes under

construction nationally. London has

seen the steepest fall, down 18% yearon-year

to just 15,000 homes under

construction, while the regions dropped

by 12% to 34,870.

Consented homes have risen 13%

over the past 12 months and the total

number of homes in planning, preconsent,

has grown by 5% to 109,920

units. However, detailed planning

applications have fallen 16% since

the last quarter, raising concerns over

longer-term supply.

The slowdown in construction

reflects the broader challenges currently

impacting housing delivery. Significant

delays at the Building Safety Regulator

are currently blocking schemes across

the country, while concerns over

development viability, driven by build

cost inflation and the economic climate,

are contributing to a cautious market.

These factors are slowing down delivery,

as projects aren’t proceeding from

outline planning through to construction

and delivery.

BtR continues to expand into new

markets, with 215 local authorities now

including BtR in their pipeline – up from

210 last year – with the Single Family

BtR market playing a central role in this

expansion, as 36,900 (13%) homes

are currently under construction or in

various stages of planning.

Melanie Leech, Chief Executive

of the British Property Federation,

said: “Completions remain robust and

planning activity is holding up well, but

the sector is facing a real bottleneck

in progressing schemes through to

construction. Viability challenges,

coupled with continued uncertainty

around project timelines, are slowing

momentum just at a time when rental

demand is rising sharply. Investor

appetite is there but unlocking it will

require a concerted effort. Urgent

action is needed in particular to deal

with the pipeline blockage currently

being caused by the Building Safety

Regulator.”

Biodiversity delays ‘a threat to SME builders’

Building delays caused by Biodiversity

Net Gain (BNG) requirements are

threatening SME builders, according to

a new report from the Home Builders’

Federation (HBF). The report says a lack

of capacity in Local Authority planning

departments is the number one reason

for BNG-related delays.

The research, based on a survey

of home builders and a Freedom

of Information (FOI) request of local

authorities, finds that 98% of SME

builders are finding implementation of

the new requirements a challenge, with

delays in the process as a result of a

lack of local authority capacity being the

biggest barrier.

BNG legislation was introduced in

2019 to ensure that new developments

enhance wildlife habitats and ecology,

requiring developers to achieve at least

a 10% net gain in biodiversity.

Delays processing planning

applications prevent builders from

starting work on site, delaying the

delivery of vital new homes. Some

94% of respondents to HBF’s survey

said they have experienced delays

in processing planning applications

due to BNG, while 90% experienced

delays specifically due to insufficient

BNG expertise or resources within local

authorities.

The FOI request also found that:

• Nearly 40% of local authorities

lack access to in-house ecological

expertise.

• A quarter of councils have seen

ecologists leave their role in the past

year.

• One in three councils have not

expanded their ecology teams since

BNG was introduced.

• Around a quarter of staff recruited

to support BNG requirements are

temporary.

Local authorities are also increasingly

reliant on external consultants, spending

an average of £23,000 per year per

council on BNG-related consultancy

fees. This constitutes the majority of

Defra’s BNG funding for local authorities

before the costs of hiring new staff or

providing training for existing staff are

even taken into account. The National

Audit Office estimates that Government

funding equates to just 0.66 full-time

equivalent ecologists per council, far

below the level required for effective

implementation.

8

08-09_SB0525 2 23/04/2025 21:55



Construction project starts fall 21%, says Glenigan

Construction project starts continued

to fall in Q1 2025, reflecting a sector

still held back by economic uncertainty,

cautious clients, and now, growing

concerns around international trade.

According to Glenigan’s April 2025

Construction Review, the value of

project starts dropped 4% compared

to the previous three months, falling by

21% year-on-year.

The latest data paints a mixed

picture: short-term delivery is under

pressure, but the development pipeline

is showing early signs of strengthening.

Activity on-site remains subdued.

Fewer major (£100m+) projects are

making it through to the construction

stage, and underlying (<£100m)

schemes have also underperformed

both quarterly and annually.

While some sectors have shown

promise, such as Community & Amenity,

which saw main contract awards grow

26% year-on-year, these wins haven’t

yet translated into on-site momentum.

Delays in moving projects from contract

award, to planning, and through to

construction start are prolonging a

Almost three-quarters of industry

professionals see the lack of

government support as the main reason

for the widening skills gap, says new

research commissioned by Siniat.

The research found that 71%

say a lack of government support is

preventing businesses from investing

in apprenticeships, while the same

number said the lack of pathways for

sluggish start to the year.

One brighter development, Glenigan

says, is the uptick in detailed planning

approvals. Overall, approvals rose 8%

compared to the previous quarter, with

several sectors showing solid growth:

• Hotel & Leisure: up 20% yearon-year,

supported by consistent

investment in the hospitality sector

• Education: up 17% year-on-year,

boosted further by a 21% increase

in capital funding in the 2025/26

budget

• Civil Engineering: a standout

performer, with planning approvals

up 176% quarter-on-quarter.

These figures suggest confidence is

slowly returning to early-stage project

planning. If sustained, this could

support a recovery in project starts in

the second half of the year.

On top of existing challenges, the

proposed introduction of new US

tariffs on UK building materials has

brought further uncertainty to the

sector. UK goods now face a potential

10% tariff, rising to 25% for steel and

aluminium, materials that accounted for

Government support needed to close the skills gap

young people leaving college is the main

reason apprentices are dropping out of

construction-related coursesat a rate

of 47%.

The research surveyed 200

contractors and sub-contractors to

gain an understanding of why so few

young people are entering the sector.

While the lack of government support

was identified as the core reason for the

skills crisis, difficult economic conditions

were also cited as a problem. Around

two-thirds (67%) cited extreme market

volatility as one of the main reasons that

firms could not invest in new talent and

66% said challenging market conditions

have meant that direct employment

simply isn’t viable for contractors or

housebuilders.

However, respondents claimed firms

do want to invest in more talent: they

just need support to do so. In fact, 68%

said a concrete government strategy

would encourage firms to invest in

skills and talent, and almost 69% said

additional career entry points for new

talent would reduce dropout rates.

a significant portion of the UK’s £1.01bn

construction materials export market to

the US in 2023.

Most UK exports in this space are

manufactured components, leaving

domestic producers particularly

vulnerable. A sharp decline in trade,

similar to post-Brexit patterns, could

cost the industry upwards of £130

million.

There are also indirect risks.

Displaced global suppliers may target

the UK and European markets instead,

raising the possibility of oversupply and

pricing volatility. Specifiers are being

advised to keep a close eye on costs

and secure specifications early where

possible.

Allan Wilen, Economics Director

at Glenigan, said: “The sharp drop

in project starts reflects the ongoing

struggles within the industry. While the

surge in major contract awards and

detailed planning approvals suggests a

strengthening pipeline, real, sustained

growth hinges on improved market

confidence and the smooth conversion

of approvals into on-site activity.”

Around 67% of respondents also

said that a culture shift would help the

construction industry to attract and

retain talent, with inadequate pay and

poor working conditions highlighted as

pushing people out of the sector. Some

66.5% stated that discrimination and

sexism are causing skilled workers to

leave for other jobs.

Etex’s Head of Marketing, Andy

Mudie, said: “It is clear that government

support is essential to attracting young

people into the construction industry.

The industry is operating in a difficult

economic climate, with small margins,

and a market that has slumped in recent

years. This makes it difficult for firms of

any size to invest significant time and

resource into supporting apprentices,

but for SME’s and sole traders – who,

as a sector, we heavily rely on to train

and upskill new talent – it makes it near

impossible. We need to look closely at

the education system, the qualifications

available, and the viability of End Point

Assessments that make some courses

feel inaccessible to young people.”

LATEST NEWS

9

08-09_SB0525 3 23/04/2025 21:55


LATEST NEWS


Funding is an ‘opportunity’ for low-carbon housing

Baxi is encouraging social housing

providers to ensure they have robust

clean heat strategies in place for both

newbuild and refurbishment projects

following recent Government funding

announcements.

The call follows the government’s

allocation of £2bn to support the

development of 18,000 new affordable

homes, half of which is allocated for

social housing. This funding for newbuild

homes sits alongside the Warm Homes:

Social Housing Fund, which is in place

to retrofit existing social housing and

improve energy efficiency.

Rob Pearse, Residential Business

Director at Baxi, said: “The £2bn

set aside for social housing in the

Spring Statement must be used with

sustainability in mind, which includes the

long-term comfort and financial security

of tenants as well as electrified heating.

This can be achieved by working closely

with manufacturers who have expertise

in the sustainable heating of social

housing and a raft of solutions able to

match almost any requirements.

“Delivering clean heat in the social

housing sector can be challenging, and

we intend to support providers from the

earliest steps of their net zero journey. It

is important to identify the system that

delivers the best efficiency, cost and

environmental results for the building

and occupants. Working closely with

experts and the wider supply chain can

provide the expertise and solutions to do

this successfully for both newbuild and

retrofit.”

Air source heat pumps are a key route

to clean heat for newbuild and retrofit

social housing projects, the company

says, though design challenges for

retrofit and skills shortages can be a

barrier to social housing providers.

Supporting SkillBuild

Glidevale Protect is supporting

the next generation of roofing

professionals by sponsoring the

regional heats and the Final of the

Roof Slating and Tiling category of

the 2025 SkillBuild competition.

Delivered by the Construction

Industry Training Board (CITB) and

recognised as the UK’s largest

multi-trade competition, SkillBuild is

designed to nurture talent and raise

standards across the construction

industry. As part of its sponsorship,

Glidevale Protect will be supplying

its vapour permeable VP400

pitched roofing underlay for use

in the practical sessions to help

competitors demonstrate essential

installation skills using specialist

materials.

Join us for the chance to win £10K!

This June, Specify & Build will be

making a big splash at InstallerSHOW

2025 with the launch of our exciting

£10k Giveaway – giving one lucky

visitor the chance to walk away with a

whopping £10,000 cash prize!

Taking place at the NEC

Birmingham from 24 to 26 June during

InstallerSHOW, the giveaway is simple

to enter. Just pick up your £10k

Giveaway Booklet at the show entrance,

visit 15 participating exhibitor stands,

chat with the teams, collect their

stamps, and submit your completed

booklet before you leave. That’s it – and

you’ll be in with a chance to win the

ultimate trade show prize!

This incredible prize draw is brought

to you by Specify & Build and powered

by 15 top-tier exhibitors, including

Alpha Heating Innovation, Diversitech,

Egger, Grant Engineering, Honeywell,

Polypipe Building Products, Powered

Now, Salamander Pumps, Sanbra Fyffe,

Schluter, SIG, Thomas Dudley, and

many more. These industry leaders are

showcasing cutting-edge innovations

across heating, plumbing, building

products, and trade technology – and

they’re all eager to meet you.

With so much to see, do, and win,

InstallerSHOW is the can’t-miss event of

the summer for tradespeople, installers,

and industry professionals. Secure your

free ticket now at www.installershow.

com and don’t forget to come and see

us while you’re there!

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COVER STORY

STAMP YOUR WAY TO £10K AT

INSTALLERSHOW 2025!

Visitors to InstallerSHOW 2025 have the chance to win

£10K as part of Specify & Build and InstallerSHOW’s

£10K Giveaway prize draw.

InstallerSHOW, the UK’s leading event

for installers and specifiers working

with heat, water, air and energy

technology, is pleased to announce the

launch of a special £10,000 giveaway to

mark its 10 th anniversary. Taking place

from 24-26 June 2025 at the NEC,

Birmingham, this celebratory initiative is

designed to further enhance the visitor

experience.

Developed in partnership with Specify

& Build, the £10k Giveaway provides

all attendees with the opportunity to

win a cash prize of £10,000 by simply

participating in a show-wide passport

stamp collection activity. Visitors will be

invited to collect a passport upon entry

and obtain stamps from 15 participating

exhibitor stands. Once completed, the

card will be entered into a draw, with

one lucky winner walking away from the

show £10,000 richer.

Mike Costain, Managing Director at

Lyrical said, “The £10K Giveaway reflects

our continued commitment to delivering

an engaging and rewarding experience

for our visitors, while encouraging them

to connect with our exhibitors.”

Who do I collect stamps from?

Visitors should ensure their passport

is stamped by each of the following

exhibitors to be eligible to enter the prize

draw:

Alpha - Stand 5H104

Egger - Stand 4F34

Grant UK - Stand 5C40

Schlüter-Systems – Stand 4D27

Polypipe – Stand 5D45

Sanbra Group (Instantor and Tucson

Pumps) – Stand 4F18

Thomas Dudley – Stand 4F14

DiversiTech – Stand 5F33

Powered Now – Stand 5B22

Salamander Pumps – Stand 4K12

SIG Roofing – Stand 4F36

Honeywell – Stand 5G22

Additional participating brands will be

announced in the lead-up to the show,

with more information available on the

InstallerSHOW website.

“This prize draw is all about creating

meaningful interactions between

visitors and a selection of brands that

are shaping the future of our industry,”

added Jake Roxborough, Publisher of

Specify & Build. “We’re proud to be

offering visitors to InstallerSHOW the

chance to win £10K as part of an activity

that not only celebrates the show’s tenth

anniversary but also helps forge stronger

connections across the industry in a fun,

engaging way.”

The £10k Giveaway will run for the

duration of the event, and the prize draw

will take place at the close of the show.

InstallerSHOW is the UK’s must-visit

event focusing

on sustainability

in the built

environment,

bringing together

more than 800

exhibitors and

30,000 visitors.

The event will

showcase the

latest in heating,

plumbing,

renewables,

kitchens and

bathrooms,

surfaces, tiling,

flooring, tools,

workwear, roofing, cladding and

insulation, solar, electrical solutions and

sustainable building technologies.

NEW for 2025 is The HAUS - a full scale

two-storey house build. Designed by

award-winning architects IF_DO and

built using regenerative materials by

Natural Building Systems, The HAUS

will sit at the centre of InstallerBUILD in

Hall 4, surrounded by manufacturers

and suppliers who share the vision to

showcase sustainability and shine a light

on innovation.

The HAUS will be built using NBS’s

ADEPT integrated and demountable

modular system to ensure it can be

completed inside three days. ADEPT is

designed for full adaptability and nondestructive

disassembly to aid circularity

and reuse. After InstallerSHOW, it will

demonstrate its true capabilities through

use in a real-world housing project.

Supplier partners on board

include:

A. Proctor Group, Abode, Ball

& Young, Correla, Coram UK

Holding, Classic Marble (Showers)

Ltd, Egger Group, Fernox,

FireAngel, Grant Westfield,

Grundfos, Gutmann, Hager,

Hafele, Jaga UK, Kitchen Link,

NIBE Energy Systems, Parkside

Architectural Tiles, Pro Tilers Tools,

Theben, Triton, Spotnails, Solax

Power, Sonas Bathrooms, Stevie

Chargers, Voltsmart, Wienerberger.

In addition to the wealth of technologies

and services on show, including a raft of

new product launches, InstallerSHOW

incorporates multiple live content areas

which offer an informative and engaging

timetable featuring a roster of compelling

hosts and speakers.

Tickets and parking for InstallerSHOW

2025 are free. Don’t miss out, register for

your free ticket today and join thousands

of industry professionals at the NEC this

June.

www.installershow.com

12

12_SB0525.indd 2 25/04/2025 09:39

Go VIP at

InstallerSHOW 2025!

InstallerSHOW returns to the NEC, Birmingham on 24-26 June 2025 and

as a Specify & Build reader, you can experience the show as a VIP!

Here’s what to expect:

• Over 800 exhibitors across multiple sectors

• Get hands on with the latest tools and tech

• InstallerBUILD tackling building sustainability and retrofitting our buildings

• The HAUS, a full-scale, two-storey house build at the heart of Hall 4

• Be in with the chance of winning £10,000 cash!

• Plus so much more, you won’t want to miss this!

There’s no time like the present

to claim your FREE VIP ticket!

Scan the QR code and use

code VIP25 when prompted.

24-26 June 25

NEC Birmingham


NEW PRODUCTS

VALUE ENGINEERING WHITE PAPER EXPLORES OPTIMAL SOLUTIONS FOR CARE HOME

Rinnai has issued a new whitepaper for specifi ers,

contractors and architects titled ‘Optimising Domestic

Hot Water Systems for Archetype Care Homes: A Value

Engineering Approach’.

The whitepaper points out that value engineering

principles highlight the importance of putting customer

requirements fi rst, applying cost-effective engineering

solutions and improving the whole life value of a project

– as opposed to simply cutting costs and resulting in an

inevitable compromise of performance.

It includes a major section on an archetype case

study which analyses a range of potential solutions for

the refurbishment of a care home in the UK. Carbon-Cost

Analysis (CCA) studies are used to decipher the optimal

solution based on the need to reduce CO 2

emissions

by 20%, a system with no more than two heat pumps

due to space constraints, and considering the operating

expenditure (OPEX) as a key metric.

The paper analyses specifi c solutions – an instantaneous

gas-fi red system, a hybrid system and an all-electric system

– based on the initial capital expenditure (CAPEX), plus

fi ve-year forecasts regarding OPEX, carbon production,

and lifecycle costs. The detailed analysis showed that the

highest whole life value system that best aligned with the

customers’ needs is the hybrid system.

www.rinnai-uk.co.uk/contact-us/ask-us-question

Sanifl o UK has launched a new website at www.sfasaniflo.

co.uk, replacing its longstanding domain at sanifl o.co.uk.

Built with the trade in mind, the new platform delivers

faster access to Sanifl o’s product data, technical downloads

and support tools, simplifying busy professionals’

specifi cation and installation process.

Sanifl o is a leading supplier of macerators, pumps,

and shower systems. The new streamlined website gives

specifi ers, installers and merchants access to datasheets,

installation guides, videos and key documentation.

Refi ned product fi lters and a new product comparator help

users identify the right solution quickly for domestic and

commercial projects.

This is the company’s fi rst major digital upgrade since

2018 and represents a signifi cant leap in usability and

functionality.

Prominently featured installation videos offer practical,

step-by-step guidance for common product installs,

reducing time on site and helping fi rst-time users build

SANIFLO UK LAUNCHES TRADE-FIRST WEBSITE

confi dence with the range.

The website works hand-in-hand with Sanifl o’s network

of approximately 100 approved UK service engineers,

ensuring that specifi ers, installers and merchants can

access fast technical back-up and on-the-ground support

when needed.

The site will continue to grow with new training assets,

technical updates, and trade support materials.

www.sfasaniflo.co.uk

FIRE COLLAR COMPLETES COMPARTMENTATION CAPABILITY FOR UK MANUFACTURER

Rochdale-based TBA FIREFLY has introduced new fourhour

fi re collars, giving specifi ers and installers a single

source of supply to address multiple compartmentation

challenges.

The FIREFLY FCR Fire Collars feature the use of inhouse

produced high-performance graphite, housed in a

corrosion-resistant, powder-coated steel sleeve, to deliver

high volume expansion and exert a pressure seal on

pipework penetrations.

Not only will the range effectively close off vulnerable

soil, waste and other types of pipe in the event of a fi re, but

the devices are fully tested in combination with FIREFLY’s

fl exible barriers and wall or fl oor batts. The range covers six

sizes from FCR50 up to FCR160, and offers compliance with

BS EN1366 -3 2021, while the rapidly expanding graphite

can hold fi re back for 240 minutes.

Manufactured from woven and non-woven glass, the

FIREFLY range is designed to optimise resistance to fl ame

and smoke, as well as offer heat protection in a wide range

of scenarios.

www.youtube.com/@tbafirefly

14

14_SB0525.indd 2 24/04/2025 09:28

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ROOF TILE

WITH ISOLINE

Any tile, old or new, and still keep your roof

watertight, even at a pitch as low as 10 degrees.

ISOLINE LOW LINE is our easy to install bituminous sub-roof system for installation

beneath any roof tile at a pitch as low as 10 degrees.

ISOLINE LOW LINE. The long-lasting, waterproofing solution for heritage, retrofit and new

builds that will ensure protection against even the harshest weather. And that’s guaranteed.

94/3055

For more information email us at

enquires@onduline.net

or scan the QR code.

www.onduline.co.uk


SUSTAINABILITY &

RENEWABLES

HYBRID SOLUTIONS

FOR REFURBISHMENT

AND REGENERATION

Alex Brock, Pre-

Construction Manager at

B&K Hybrid Solutions,

explains how architects

and developers can

construct low-carbon

buildings without

compromising on

performance or

aesthetics.

As the construction sector

continues to evolve, there is

an ever-growing demand for

sustainable, efficient and innovative

building solutions. As such, timbersteel

hybrid structures have emerged

as a key solution to refurbishment and

regeneration challenges, providing a

combination of sustainability, structural

efficiency and design flexibility.

The Labour Government has made it

clear that climate action is a key priority

for the UK. As a result, the construction

industry must tackle its environmental

impact by addressing building design.

According to the UK Green Building

Council, construction activities contribute

around 10% of the UK’s total carbon

emissions – a figure that rises to 45%

when considering the broader built

environment sector. To meet the UK’s

2025 net zero goals, both operational

and embodied carbon emissions must

be significantly reduced, and hybrid

mass timber structural systems offer a

viable pathway to achieving this, using

the carbon-sequestering properties

of timber along with the strength and

durability of steel.

Steel elements provide superior tensile

strength, enabling long spans and

flexible designs, while timber elements

offer significant sustainability credentials,

structural benefits and versatility in

future adaptability. This synergy between

materials allows for the refurbishment

of buildings that are both resilient and

energy efficient.

Hybrid solutions are particularly

suitable for dense urban environments,

offering both time and cost savings.

Precision prefabrication reduces on

site works, while the lightweight nature

of timber – approximately one-fifth

the weight of concrete – allows for

easier transportation and minimises

site congestion, which is particularly

beneficial for refurbishment schemes.

Walworth Town Hall – a meticulous

redevelopment in a sensitive response

to a devastating fire in 2013 – is a

great example of how to use a hybrid

structure for refurbishment. The Grade

II-listed building was repurposed for the

good of the local community through

an offsite manufactured hybrid timbersteel

solution. Using strengthening

steelwork for the refurbishment works

and timber for the roof, the solution

was to restore the original elements and

10%

UK carbon emissions come

from construction

activities

further modernise the building with new

vertical extensions and roofs, a new

mezzanine floor, and a new lift core.

Additionally, using structural timber

for the refurbishment works not only

enhanced the sustainability credentials of

the building, but also took advantage of

the lightweight benefits the material can

bring to retrofit projects, while retaining

superb structural performance.

Another example of innovative hybrid

construction is the Technique project

in Clerkenwell, London, which saw two

outdated industrial buildings unified

into a cutting-edge commercial space.

By employing a hybrid structural

system consisting of steel and

engineered timber, three additional

floors were added to the existing

structure, improving both environmental

performance and the versatility of the

new commercial building.

Timber-steel hybrid solutions can provide

an answer to many of the challenges

facing the UK construction industry

today. By combining the best properties

of both materials, these systems can

deliver sustainable, cost-effective, and

architecturally exciting solutions for

refurbishment and regeneration projects.

As the UK moves towards its net zero

goals, embracing hybrid solutions will be

key to building a greener, more resilient

future.

With a key focus on sustainability,

innovation and efficiency, B&K Hybrid

Solutions has played a crucial role in

the construction of hybrid timber-steel

structures in a range of award-winning

projects.

www.bkhybridsolutions.co.uk

Long-term carbon storage

Timber is a renewable material that not

only absorbs CO 2

during its growth

but also acts as a long-term carbon

store when used in buildings. When

responsibly sourced and combined

with low-carbon steel, hybrid

structures present a significantly lower

environmental footprint compared

to traditional construction materials.

16

16_SB0525.indd 2 23/04/2025 10:17

FLAGON® Single

Ply Membranes

Versatile Waterproofing for Flat

and Shaped Roofs

BUILT FOR BOTH FORM AND FUNCTION.

From flat roofs to waveform and curved designs, FLAGON® membranes from SOPREMA

offer a flexible solution for modern roofing projects, with a clean, smooth finish that

supports design intent.

Suitable for bonded, ballasted or mechanically fixed systems

Performs on mono-pitch, curved and waveform roofs

Compatible with green, solar and inverted applications

Backed by BBA certification and EN-standard testing

Supported by SOPREMA’s technical expertise

WWW.SOPREMA.CO.UK

E: techsupport@soprema.co.uk

SCAN

ME!


SUSTAINABILITY &

RENEWABLES

ANCIENT CLAY BRICKS OFFER

MODERN LEVELS OF

SUSTAINABILITY

Durable, adaptable, locally and responsibly sourced,

there is much to recommend clay brick as a modern

sustainable building material. Rob Flello, CEO of the

Brick Development Association, affirms clay brick’s

environmental credentials and its role in creating a less

impactful infrastructural landscape.

Clay brick stands as a truly

sustainable building material,

with its enduring performance

showcased for millennia. In contrast to

many other forms of construction, clay

brick distinguishes itself with a minimum

active lifespan of 150 years. Its longevity

often surpasses this benchmark, as

evidenced in ancient brick structures

that remain in use today and date

back several thousand years BC. The

Pantheon, for example, was constructed

with brick in 120AD, and is impeccably

preserved to this day. Meanwhile, the city

of Cambridge boasts university buildings

from the 1400s, further underscoring

clay brick’s exceptional durability.

Superior resilience

Clay brick is robust and stable,

offering exceptional resilience to

weather extremes including flooding.

Requiring only minimal maintenance

such as periodic repointing, clay

brick can withstand generations of

wear and tear in most environments.

Unlike render, timber or other building

materials requiring regular maintenance,

clay brick’s resilience minimises its

environmental impact. Non-flammable

and non-combustible, clay brick façades

often survive fires structurally intact,

enabling renovation and reuse.

The exceptional durability of clay brick

perfectly illustrates the value of a cradleto-cradle

approach to sustainability that

is not just about the initial materials used,

but about a product’s entire lifecycle

from its production to use, maintenance

and future reuse or recycling.

Clay brick exemplifies this whole-life

approach. Its longevity lowers its carbon

footprint per year of use, and it can

be reused multiple times, significantly

reducing waste. By reusing clay brick

buildings instead of demolishing them,

carbon emissions are reduced while

preserving the architectural heritage.

As a reusable and recyclable material,

clay brick proves itself as a carbonfriendly

building option, saving carbon

and retaining the character of our

built environment. A cradle-to-cradle

mentality recognises the sustainability

inherent in this natural material.

However, current methods for assessing

sustainability, such as Environmental

Product Declarations (EPD) often fail

to account for clay brick’s exceptional

longevity. EPDs typically use a limited

60-year study period – partly because

the Life Cycle Assessments (LCAs)

underpinning construction sector

EPDs often use a study period of circa

60 years for building performance

scenarios. This short timeframe

overlooks the exceptional longevity of

durable materials such as clay brick. As

demonstrated, the oldest fired bricks are

over 6000-years-old.

By underestimating the extended

lifespans of durable products such as

clay brick, EPDs and the specifiers who

reference them lack crucial data on true

carbon footprints. Lifecycle assessments

based on clay brick’s 150+ year service

life would reveal its true sustainability

compared to materials requiring

replacement every 60 years.

Clay brick is also a local product, with

85% of the bricks used in the UK

manufactured here. Clay bricks travel

an average of no more than 68 miles

from factory to site, reducing economic

and environmental costs compared

to materials that require long distance

transport.

Reduce energy consumption

Noted for its excellent thermal mass,

clay brick’s ability to absorb, store and

release heat energy helps to regulate

indoor temperatures and reduce

energy consumption for heating and

cooling. This contributes to lower

operational carbon emissions, as the

building requires less energy to maintain

comfortable temperatures throughout

the year.

Clay bricks primarily contain only

natural elements such as clay, sand,

water with minimal additives. As an

inert construction material, clay brick is

chemically stable and unlikely to react

with other substances or release harmful

toxins or byproducts during the brickmaking

process. As clay bricks do not

usually require chemical treatment to

ensure durability or fire resistance, they

do not emit volatile organic compounds,

formaldehyde or allergens to air

during use. This enhances clay brick’s

reputation as a more natural building

material that offers optimal comfort for

occupants and a minimal impact on the

environment.

With growing scrutiny on sustainable

construction, clay brick stands out as an

indispensable building material. Locallysourced,

non-polluting, strong, weather

and fire-resistant, clay brick facilitates

sustainable design while offering

hundreds of years of use.

www.brick.org.uk

18

18_SB0525.indd 2 22/04/2025 15:56

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partner for

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seniorarchitectural.co.uk

Aluminium fenestration specialists since 1991. Innovative windows, doors and curtain wall systems


SUSTAINABILITY &

RENEWABLES

SPECIFYING ENERGY

EFFICIENT WATER

DELIVERY

Suzannah Adey, Product Marketing Manager at Mira

Showers, highlights the impact the Future Homes

Standard will have on energy efficient water delivery

and why hot water demand reduction should be

considered now.

to generate hot water will increase. The

need to reduce a home’s energy and hot

water demand is even more imperative

when you consider that hot water

production already ranks as the second

highest user of energy in a typical UK

home – with showering representing

around 50% of all household hot water

use. Additionally, around 85%-90%

of heat energy in showering is lost

down the drain, meaning a significant

percentage of the total average

household energy budget is lost – a

figure that will increase further as homes

become more energy efficient.

With HEM measuring how different

technologies work within a house,

the implementation of systems that

reduce hot water usage, enhance

energy efficiency and integrate

renewable energy, the specification

of energy efficient showers and other

water delivery systems will become an

important aspect of property design.

The FHS will therefore challenge asset

owners to rethink hot water specification

and the way buildings consume energy

– requiring planning and investment

in technologies that are futureproof,

compliant with regulations, and costeffective

over the long term.

With the Future Homes

Standard (FHS) currently

being finalised, developers

need to be aware of the importance of

adapting specifications to reduce carbon

emissions in newbuilds. However,

existing properties will also be impacted,

with millions of homes across the UK

expected to need energy efficiency

upgrades. Domestic properties account

for around 14% of the UK’s total carbon

emissions, so it was perhaps no surprise

the FHS was introduced. Aiming to

reduce carbon emissions by 75-80%

compared to those built under the

existing regulations, it’s likely to make

a substantial difference in the future.

With the UK Green Building Council

estimating that 29 million UK homes will

require energy efficiency upgrades to

achieve the government’s 2050 net-zero

target, facility managers and building

owners need to fully understand the

regulations and how to utilise technology

to ensure compliance.

As FHS takes shape, Standard

Assessment Procedure (SAP) will be

replaced by the Home Energy Model

(HEM) – a more dynamic methodology

providing an extensive approach to the

evaluation of energy efficiency in homes.

It will demand more detailed information

and accurate simulations, compared to

the less detailed dataset used by SAP.

Additionally, HEM will use half-hour

intervals for realistic energy consumption

and environmental impact assessments,

while SAP uses monthly calculations.

HEM will also identify and evaluate future

technologies and offer a comprehensive

long-term view of energy efficiency in the

property.

The impacts on hot water

specification

As property developers, facility

managers, and building owners focus

their attention on energy efficient

solutions to improve space heating, the

percentage of domestic energy required

As energy prices rise, household energy

consumption should be optimised.

While occupants have a role to play

in reducing their energy usage, the

installation of energy efficient showers

will go some way towards cutting

down energy bills over time. Indeed, an

increasing number of energy efficient and

sustainable electric showers and waste

water heat recovery for showers units

are being specified. Working in unison,

for example, the Mira Heatloop electric

showers and Recoup HeatDeck waste

water heat recovery system reduce the

amount of energy needed per shower

by up to 40%, and lower the CO 2

associated with the production of hot

water.

Regulating power based on incoming

water conditions, and recycling as

much heat as possible, these systems

significantly reduce hot water demand,

substantially improving energy efficiency

and consumption without any change

to user behaviour or maintenance. With

asset owners under pressure to reduce

carbon footprints, occupants facing

rising energy costs, and regulations evertightening,

the importance of specifying

and installing energy efficient showers

and water delivery systems cannot be

overlooked.

www.mirashowers.co.uk

20

20_SB0525.indd 2 23/04/2025 10:18

Visit us

on stand 4F14

VISIT US ON STAND 4F14

NEC Birmingham 24-26 June 2025

www.thomasdudley.co.uk

Installer Show Advert.indd 1 16/04/2025 13:36:23


SUSTAINABILITY &

RENEWABLES

HOW ARCHITECTS ARE

INSULATING PASSIVHAUS

BUILDINGS

A fabric-first approach to building is the core of the Passivhaus standard. Here, we

explore the fundamentals of Passivhaus insulation and how some architects have

achieved this in their own projects.

Passivhaus is an energy

performance standard used

to achieve thermal comfort

solely by post-heating or

post-cooling of the air,

removing the need for traditional space

heating systems such as gas boilers.

Crucially, it sets a standard for the

maximum required heating load from

heat pumps or mechanical ventilation

with heat recovery (MVHR) and this

requires a highly efficient, airtight building

fabric with minimal thermal bridging.

For a building to be considered

Passivhaus, it must meet four criteria.

Firstly, the Space Heating Energy

Demand cannot exceed 15kWh per

square meter of living space per year.

Second, the total energy used for all

domestic appliances must not exceed

60kWh per square meter per year.

Airtightness must be no more than

0.6 air changes per hour at 50Pascals

pressure and, finally, thermal comfort

must be met in all living areas.

These requirements can be met by

following five principles – highly efficient

thermal insulation, well-insulated

windows that use low-e glazing to

prevent heat transfer, ventilation heat

recovery, airtightness and minimal

thermal bridges.

Insulating the building fabric

A Passivhaus building requires very

high levels of thermal insulation. For

comparison, Approved Document L of

the Building Regulations asks that walls

achieve a maximum U-value of 0.26

W/m 2 K, whereas Passivhaus buildings

typically have a U-value lower than 0.15

W/m 2 K.

One approach is to use glass mineral

wool, as HEM Architects did on Sort

Trae, a Passivhaus designed by a

retired architect as her own dream

home and workshop. Knauf Insulation’s

FrameTherm Slab 32 was friction-fitted

within the 140mm thick timber frame

walls on the first floor for a calculated

U-value of 0.14 W/m 2 K, while DriTherm

Cavity Slab 32 was used to fill the stoneclad

masonry cavity walls on the ground

floor to get a U-value of 0.14W/m 2 K.

22

22_SB0525.indd 4 15/04/2025 21:29


SUSTAINABILITY &

RENEWABLES

We try to specify fully filled masonry cavity walls

where possible, sometimes up to 200mm wide, to

maximise the use of mineral wool insulation.

“We try to specify fully filled masonry

cavity walls where possible, sometimes

up to 200mm wide, to maximise the

use of mineral wool insulation. It pays

dividends for the client,” explains Liam

Seaman, Architectural Technologist for

HEM Architects.

Airtightness and thermal bridging

Airtightness is one of the most crucial

aspects of a Passivhaus build. Air

leakage is a significant contributor

to heat loss, poor air quality, drafts

and sound pollution. An airtight fabric

improves occupant comfort and ensures

low and zero-carbon technologies such

as MVHR and heat pumps can run

efficiently.

Insulation that’s fitted correctly plays

a critical role in airtightness, but some

materials are easier to achieve this with

than others. For example, rigid boards

can be difficult to install without air gaps

as they require precise cutting and

taping. Due to construction tolerances,

minor imperfections in the substrate,

and the natural movement of the

construction over time, it can be very

difficult to achieve and maintain a flush fit

with these boards, even if they notionally

offer the required performance.

VESP Architects have found over the

years that using mineral wool makes it

easier to achieve the required thermal

performance and airtightness levels

needed for Passivhaus construction.

Although not strictly built to the

Passivhaus standard, Labrador House

is a high-performing home with wall

U-values of 0.15W/m 2 K, achieved using

Knauf Insulation’s Rocksilk RS45.

To achieve an airtight and efficient

thermal envelope, the timber-clad

sections of the house used 175mm

slabs of Rocksilk RS45, a rock mineral

wool product, fitted between the studs

of the steel frame system. The total

U-value for the timber-clad walls was

0.15W/m 2 K.

One the biggest factors in the

specification of Rocksilk RS45 was the

installation process. Director Ian Phillips

explains: “We now specify mineral wool

for any full-fill insulation we need. The

fact is that rigid boards such as PIR

perform well on paper but are not quality

control friendly. The boards don’t sit

as closely to the timber as they need

to. Mineral wool can be pushed into a

space and fills it so easily.”

Thermal bridging

Mitigating thermal bridging is another

key tenant of Passivhaus. Heat follows

the path of least resistance when

moving by conduction from the heated

building space to the outside – a thermal

bridge is a localised area of increased

heat flow. Thermal bridges can cause

increased heat loss and decreased

surface temperatures, which can lead to

condensation that penetrates building

elements causing mould and rot.

A building can be considered ‘free’

of thermal bridges if the total heat

loss, including from potential thermal

bridges, isn’t greater than what would

be expected by calculating the heat

loss of the whole building based on

its U-values. Another practical way of

defining ‘thermal bridge free’ design is to

check if one can use a pencil to outline

the exterior insulation envelope on a

sectional drawing, without breaking the

line.

Simply changing the configuration

of a system can make a substantial

difference. For example, while working

on Wednesfield Technology Primary

School in Wolverhampton, offsite

specialists Timber Innovations used a

twin stud configuration of its Larsen

Wall system to reduce thermal bridging.

The panels were insulated with Knauf

Insulation’s glass blowing wool Supafil

Frame.

“A blown-in material ensured we

consistently filled all the voids in each

panel, providing the required thermal

performance and ensuring there would

be no cold spots in the finished walls,”

says David Himmons, Managing Director

at Timber Innovations.

Passivhaus homes

Designing and building to the Passivhaus

standard not only improves occupant

comfort but also contributes to energy

efficiency and sustainability. As more

architects and builders adopt these

practices, Passivhaus principles will play

an increasingly important role in lowcarbon

housing.

23

22_SB0525.indd 5 23/04/2025 10:20


SUSTAINABILITY&

RENEWABLES

INSPIRING MAKERS 2025:

SHAPING THE FUTURE OF DESIGN

A new exhibition at The Building Centre in London is helping specifiers navigate the

barriers and opportunities of the retrofit sector, with Saniflo as a Principal Partner.

Retrofit 2025 – What’s

Stopping Us’ is a static

exhibition at London’s The

Building Centre, featuring a

full programme of in-person

and online events until September

2025. Retrofit 2025 aims to show that

tools and solutions to transform existing

buildings already exist and to encourage

architects, specifiers, construction

professionals, the housing sector,

Government and local authorities to take

the necessary next steps.

Saniflo has announced a six-month

collaboration with the Building Centre

as a Principal Partner for the exhibition.

Along with sister brand Kinedo, Saniflo

has not only placed products in the

static display ‘house without walls’, but

also contributed case studies detailing

how their products have enabled change

of use conversions in the housing and

educational sector.

The shower unit is ready

to use from the moment

it’s installed, saving on

both specification and

installation.

Pods adjacent to the static display

highlight how a former office building

was transformed into apartments in

Peterborough, using Kinedo shower

cubicles in the bathrooms, while a former

bank was converted into a world-class

dental training school with the help

of a number of Saniflo pumps and

macerators.

A Kinedo Kinemagic Design all-inone

shower cubicle is featured in the

‘house without walls’ along with a

Sanicompact WC, which is a spacesaving,

cisternless WC with integrated

macerator. The shower cubicle is swift

to install and, thanks to its unique design

and assembly, requires no tile or grout

to create a watertight environment.

Consisting of internal glass panels that

sit over the upstands of the shower

tray, glass external panels and door, the

shower is supplied as a single package

complete with shower, valve and

handheld shower. No follow-on trades

are required, so the unit is ready to use

from the moment it’s installed, saving

on both specification and installation

time. The Sanicompact is ideal for small

bathrooms that cannot discharge waste

via gravity. The integrated macerator

means that no cistern is required and it

can also discharge waste from a basin.

Amanda Mills, Marketing Manager at

Saniflo, has overseen the collaboration.

She said: “This is a sector that lends

itself very well to our products and one

we have worked in for a long time. There

is definitely more emphasis today on

retaining and converting buildings for

new uses. Our pump range, in particular,

enables developers to discharge

waste when traditional gravity drainage

infrastructure can’t or is too expensive.

Saniflo’s range extends from pumps for

single bathrooms or kitchens, through to

pumps for whole buildings, or multiple

small buildings. Retrofit 2025 offers us

a great opportunity to reach a bigger

audience to share our products and

knowledge. We’re looking forward to

attending as many in-person events as

possible and to using the facilities at the

Building Centre for our own customers.”

Founded in 1931, the Building Centre

was the first establishment of its kind.

Some 90 years later the Centre is run

by the Built Environment Trust, an

independent charitable organisation

dedicated to inspiring and supporting

knowledge and practice in the world of

building. The Building Centre showcases

the best in materials and manufacturing

alongside the work of leading architects

and designers to inform and inspire

conversations about issues, challenges

and successes in the built environment.

www.buildingcentre.co.uk

24

24_SB0525.indd 2 23/04/2025 10:21

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YST1088_ARBO_ADS_x3_2025_V4.indd 3 26/02/2025 13:34


SUSTAINABILITY

PRODUCTS

ALTECNIC UNVEILS NEW DISPLAY VAN WITH RENEWABLES FOCUS

Hydronic solutions provider Altecnic, part of the Caleffi

Group, has unveiled its new display van – a mobile

showroom designed to bring solutions directly to

merchants and training centres nationwide.

The vehicle is equipped with product displays that

highlight Altecnic’s range of renewable-focused solutions,

serving as a hub for on-the-go education and training with

hands-on demonstrations and technical guidance.

The van features a range of Altecnic’s products,

including heat pump ancillaries, renewable energy

solutions and core product ranges. Cut-away product

displays give visitors an in-depth understanding of how

these technologies function, enhancing their technical

knowledge. Live demonstrations and displays provide

attendees with practical insights into the installation and

operation of Altecnic’s products.

The van is staffed by Altecnic’s team of professionals,

who can provide tailored technical guidance, answer

queries and share best practice to ensure optimal

performance and efficiency.

www.altecnic.co.uk

BREATHING BUILDINGS OFFERS ENTIRE SCHOOL VENTILATION SOLUTIONS

Breathing Buildings, a leading provider of controlled natural

and hybrid ventilation systems, offers schools a complete

ventilation solution to enhance indoor air quality (IAQ),

energy efficiency, and sustainability. With high energy

costs driving schools to improve their energy performance,

buildings are becoming increasingly airtight and schools

need energy efficient ventilation strategies to maintain

healthy and comfortable learning environments. The

government’s recent commitment of £1.4 billion towards

the School Rebuilding Programme has provided crucial

funding for schools to invest in low-carbon, high-efficiency

ventilation solutions.

Schools require solutions that meet energy efficiency

targets and ensure excellent IAQ to support student wellbeing,

academic performance, and thermal comfort. Since

energy prices are unlikely to decrease significantly, longterm

operational costs are critical to the ventilation decisionmaking

process.

Breathing Buildings’ award-winning Natural Ventilation

with Heat Recycling (NVHR) range offers hybrid ventilation,

using both natural ventilation and mechanical ventilation in

one system design. Hybrid ventilation is highly efficient and

harnesses free heat energy that has already built up within

a space.

Last year, Breathing Buildings introduced its new Natural

Ventilation with Heat Recycling and Heat Recovery (NVHRe)

Hybrid ventilation is highly efficient and

harnesses free heat that has already built up

within a space.

range, which adds a low-resistance heat exchanger cell

to the NVHR unit. This allows the unit to benefit from both

heat recycling and heat recovery, reclaiming even more

heat and allowing users to include it within building energy

assessments (SBEM).

NVHRe combines 46% heat recovery efficiency with

low Specific Fan Power (SFP) of 0.075 W/l/s to help

maximise energy savings. It also has different operating

modes to minimise energy use, enhance IAQ and improve

occupant comfort. As an intelligent hybrid system, the unit

automatically decides when and if mechanical operation is

required.

The range also includes units that can be the primary

source of heat; needing no radiators, as well as a system

that can offer further cooling. The British designed and

manufactured units come in three models with variations

to suit every need, with the standard NVHRe, 1100, an

NVHRe+ 1100 which includes a heating coil and is ideal for

buildings in cooler areas; and an NVHRe C+ 1100 which

features a heating and cooling coil for year-round comfort

and full temperature control.

Breathing Buildings has adopted the CIBSE TM65

methodology for collecting product data and has completed

these evaluations for all its ventilation units.

www.breathingbuildings.com

26

26_SB0525.indd 4 23/04/2025 10:22

CERAMAPANEL

A1 Fire Rated Fibre

Cement Cladding

®

Compressed Fibre Cement Facade

A non-combustible, aesthetically appealing

and cost effective cladding solution offering

a truly natural look

BENEFITS INCLUDE

• NON-COMBUSTIBLE A1 fire-rated to BS EN 13501-1 ensuring the highest level of

fire safety for your projects. Also available in A2 painted fire-rating A2-s1, d0

• VIBRANT COLOUR PALETTE Available in a diverse range of colours and finishes,

allowing for creative freedom in designs. Also available in A1 printed, bespoke

designs

• FULLY RECYCLABLE Waste material can be shredded which is then mixed with

other materials to make road surfaces, making Ceramapanel an eco-friendly

choice for construction projects.

• ON OR OFF-SITE FINISHING Panels can be prepared and finished on or off-site,

ensuring a streamlined and efficient installation process.

• ROBUST AND LONG-LASTING Panels designed for longevity, tested to a life

expectancy of over 60 years with minimal maintenance requirements.

• FAST TURNAROUND Benefit from short lead times and expedited installation

processes.

A2

A1-s1.d0

A2 painted

RATED

available

Specify this product

online with NBS Chorus

Environmental

Product Declaration

Recyclable

Life expectancy

60 years

Order your free samples or arrange a meeting with one of our

Facade Consultants by contacting enquiries@valcan.co.uk

or calling 01278 428245.

T: 01278 428245

E: enquiries@valcan.co.uk

W: www.valcan.co.uk

Scan for more information and to order samples


CASE STUDIES

ADVANCEDLIVE PROVIDES PROTECTION FOR HISTORIC VICTORIAN TOWN

Blists Hill Victorian Town museum in the Ironbridge

Gorge now benefits from a comprehensive Advanced fire

protection system designed to improve safety, simplify

management and provide real-time insights across its

expansive historical site.

The existing fire alarm system was due for renewal and

the Trust was looking for something with better functionality.

The site now features seven separate Advanced MxPro 5

panels, connected to the AdvancedLive smart monitoring

and management platform. This allows the independent

panels to be unified into a single, cohesive interface,

creating a virtual network for the fire system. This approach

eliminates the need for additional hardware like separate

BMS interfaces or modules, making the solution cost

effective and simple to install. By making the fire system

status available anytime, anywhere via any internet-enabled

device, AdvancedLive provides the site’s security and

facilities teams with seamless, centralised management to

suit their location and schedule.

AdvancedLive allows non-specialist staff to monitor fire

system status through an intuitive interface that features a

choice of map or list views. Real-time notifications alert the

team to fires, faults, or device disablements, enabling them

to act quickly, even when off site. This easy-to-use system

empowers the Blists Hill team to maintain safety standards

without requiring in-depth fire system training, saving both

time and resources.

Chubb Fire and Security carried out the installation,

which included 600 Hyfire wireless devices to ensure

comprehensive coverage across the site’s houses, shops,

and underground mining tunnels. The seamless integration

of AdvancedLive and wireless devices ensures robust fire

protection while maintaining the historical integrity of the

buildings.

www.advancedco.com

BAKERY AND BREAD MANUFACTURER ADOPTS ULTRA HIGH-EFFICIENCY WATER

HEATERS TO CUT COSTS

Rinnai has installed its range of I2HY20 Hydrogen blends

20% certified commercial water heaters at a leading bread

manufacturing brand in Bradford. An industrial scale

bakery must have access to a consistent flow of clean

water for sanitation purposes and to produce dough. A

plant bakery can use anywhere from 10,000 to 300,000

gallons of water per day.

For the bakery to continue operations without negating

production output, and to reduce costs, Rinnai design

specialists decided that installing a Rinnai N series unit

would be the ideal solution. The Rinnai N series range of

commercial condensing water heaters guarantees copious

amounts of temperature accurate hot water. The Rinnai

commercial water heaters are also highly efficient with a

tested efficiency of 97% and as Rinnai condensing water

heaters do not store water, wasteful standing losses are also

avoided.

The Rinnai Sensei N Series continuous flow hot water

heater range offers a more compact, enhanced combustion

design that allows for easier installation, superior operational

performance as well as ease of serviceability.

The Rinnai N Series is the first ever continuous flow hot

water heating unit manufactured with stainless steel heat

exchangers to be available in the UK – this provides a

greatly extended working life at optimum performance to

each of the four models in the range. In addition, extended

warranties are provided to ensure customer satisfaction.

Rinnai N Series continuous flow water heaters are hydrogen

Blend and Bio-LPG blend ready.

The four models are:

• the N1600i giving 954 litres per hour (at 50 degrees)

• the N1600e (external) also giving 954 litres per hour

(at 50 degrees).

• the N1300i giving 775 litres per hour and

• the N1300e (External) giving 775 litres per hours of

temperature controlled hot water at 50 degrees.

The two 1600s have load profiles of XXL and are water

efficiency class A rated, while the 1300s are load profile XL

and are also water efficiency class A rated.

The entire range is low-NOx and futureproofed. The N

series continuous flow water heater uses Rinnai’s patented

advanced burner technology with a 13-1 turn down ratio

– the largest on the market combined with 97% efficiency

rating. Integral controls on the units enable the water heater

to achieve high efficiencies due to advanced burner control

and high modulation ranges.

This wide range of modulation means that energy usage

is completely optimised as the water heater maintains

smart inbuilt controls that will only heat the water to the

temperature required – thus preserving energy.

www.rinnai-uk.co.uk/products/commercial

28

28_SB0525.indd 4 23/04/2025 21:23

A Sash Above The Rest

A SASH

ABOVE

THE REST

A GREAT SASH

WINDOW IS

MORE THAN

A SUM OF ITS

PARTS

C

M

Y

CM

MY

CY

CMY

K

True authenticity comes from a

Single features may grab attention,

blend of heritage styling and

but a true heritage sash window is

modern performance.

designed to ensure the seamless

integration of all its parts.

Single features may grab

Everything has to work attention, together: but a true heritage

slim overlapping putty-line sash window profiles, is designed to

a 35mm midrail, heritage ensure the chalk seamless integration

finishes, seamless of ornate all its parts. sash

horns, true mechanical Everything joints, has deep to work together:

cills and innovative slim balance overlapping putty-line

chamber covers, to profiles, name a but 35mm a few. midrail, heritage

chalk finishes, seamless ornate

Add to that a 1.2 W/m sash 2 k horns, u-value true mechanical

without specialist glass, joints, deep and you cills and innovative

have a true conservation-grade

balance chamber covers, to

sash window with name outstanding but a few.

modern performance. Add to that a 1.2 W/m 2 k u-value

without specialist glass, and you

have a true conservation-grade

sash window with outstanding

modern performance.

New Sash Horn

Only Roseview’s Ultimate Rose

sash window delivers all this.

Award-winning for its true authenticity, featuring the slimmest Because 35mm it’s more midrail, than a sum

putty-line profiles, mechanical joints, deep cills, and a 1.2 of W/m²k its parts. U-value – the

Ultimate Rose sets the standard for conservation-grade sash windows.

01234 712657

trade@roseview.co.uk

www.roseview.co.uk

#TraditionRedefined


NEW PRODUCTS

BEKO APPLIANCE PARTNERS REINFORCE COMMITMENT TO DURABILITY

AND RELIABILITY

As housebuilders and developers continue to prioritise

quality and reliability in their newbuild projects, Beko

Appliance Partners, the contract supply division of

the leading home appliance brand, is reaffi rming its

commitment to delivering durable, high-performance

appliances that withstand the demands of modern living.

Beko’s appliances undergo rigorous stress-testing to

ensure they can provide years of dependable service. From

opening and closing fridge freezer doors up to 300,000

times and testing glass shelves with a 150kg weight for eight

hours, to extending the loaded lower rack of dishwashers

over 100,000 times, each product is meticulously evaluated

to guarantee long-term performance and reliability.

Mike Beech, Beko Appliance Partners’ National Contract

Specifi cation Manager, said: “We continually strive to ensure

our appliances are not only highly functional, stylish, and

energy-effi cient but also built to last. Delivering new homes

that exceed expectations long beyond initial occupation is

a collaborative effort. Our appliances have been extensively

tested to surpass safety, reliability, and performance

standards, and with extended guarantees available, we

offer peace of mind to both developers and their customers

alike.”

In addition to stringent testing, Beko is committed to

extending the lifespan of its appliances and reducing

electronic waste. To support this, Beko offers an optional

extended parts and labour warranty package of up to fi ve

years, encouraging repairs over replacement. Furthermore,

Beko’s 10-year spare parts guarantee reinforces its

sustainability credentials.

For housebuilders and developers, ensuring appliances

perform optimally post-installation is critical to maximising

customer satisfaction and protecting their reputation.

Avoiding costly callbacks due to product malfunctions is

a key factor in maintaining homebuyer confi dence and

enhancing the overall quality perception of a development.

appliance-partners.bekoplc.com

GET INVALUABLE SPECIFICATION ADVICE FROM DOMUS VENTILATION AT SPECIFI

THIS YEAR

Domus Ventilation, a manufacturer of ventilation systems

that save energy and improve indoor air quality, has

already exhibited at four Specifi Mechanical Services

events this year, with a further two booked for the

remainder of 2025 – in Glasgow on 3 rd June and London on

2 nd December.

A regular exhibitor at Specifi over the years, Domus

Ventilation values these smaller, informal events for the

opportunity they provide to meet face-to-face with specifi ers

from the fi eld of mechanical and electrical services,

enabling the sharing of ideas and information, relationship

building and professional development. Visitors will be able

to sign up to one of three Domus Ventilation’s CIBSE CPDaccredited

courses on residential ventilation: Residential

Ventilation Principles & Building Regulations; Pre-Planning

Conditions & Ventilation; and MVHR Design & Best Practice.

Domus Ventilation experts will be present at these

Specifi events, ready to impart their extensive specifi cation

knowledge with visitors to enable them to implement

effective ventilation solutions for their current and future

projects. They will be able to advise on the latest, costeffective

ventilation solutions available for residential and

light commercial applications that enable compliance with

Building Regulations Part F (ventilation).

The Domus Ventilation product portfolio offers immediate,

practical solutions to Building Regulations Parts F & L. For

whole-house ventilation, the HRXE Mechanical Ventilation

with Heat Recovery (MVHR) and CMX Mechanical Extract

Ventilation (MEV) systems have been designed for high

performance combined with energy effi ciency.

For individual room ventilation, it offers a comprehensive

range of fans, from the dMEV-NICO which provides

continuous background extract ventilation, through to

centrifugal and axial intermittent extract fans. The axial fan

range has recently been expanded with the addition of the

DBF100 100mm (4”) fan and the DKF150 150mm (6”) fan to

provide customers with a single source of axial fans.

www.domusventilation.co.uk

30

30_SB0525.indd 4 23/04/2025 10:26


HOW DATED WINDOWS CAN ACHIEVE MODERN STANDARDS OF

ENERGY PERFORMANCE

Together with building owners, most specifiers can see

the aesthetic benefits of retaining traditional steel windows

when restoring an older property, whether it is subject to

conservation requirements or not. Here, Laura Mercer,

Managing Director of Associated Steel Window Services

(ASWS), reflects on the steps available to help heritage

W20 and other traditional steel and timber windows attain

contemporary standards of energy performance.

Universal Suite, W20 sections and other frame types

generally suit everything from dockland warehouses to Art

Deco villas. The slender sightlines and glazing patterns

undoubtedly complement brickwork or render across

multiple architectural styles, but the accepted wisdom

that steel simply cannot satisfy the thermal performance

requirements leads to many project teams seeking

alternative solutions.

There is, though, genuine and growing cause for taking

a more positive and proactive attitude to existing windows

of any material, even if they are suffering from corrosion in

the case of steel, or rot in the case of timber, misalignment

and have poorly maintained or even missing fittings. Not

only can they be fully refurbished and put in good working

order, but draughtiness and thermal transmittance issues

can be radically improved to the point where a number

of restoration projects have successfully targeted the

higher levels of BREEAM – without replacing the old

windows. There are even points available within BREEAM

assessments for saving the original fenestration from the

scrap yard.

The ideal starting point is to have an experienced window

specialist, such as ASWS, carry out a full condition survey

prior to any work beginning on site, with the drawings,

observations and detailed recommendations often

incorporated as part of the tender documents – or as part of

the planning or listed building application.

With commercial work accounting for a high proportion of

its portfolio, ASWS has been involved on some challenging

redevelopments in recent years. Taking advantage of

modern glazing technology is just as important as diligence

in overhauling the frames themselves and understanding

that leakage occurs around the frames and the fabric of the

walls, as well as through the vents themselves.

www.asws.co.uk

NEW PRODUCTS

PYROGUARD UNVEILS THE TECHLIBRARY

Pyroguard, a leading independent provider of fire safety

glass for timber, steel and aluminium applications, has

launched the Pyroguard TechLibrary – a digital platform

designed to make it easier for architects, specifiers and

contractors to access essential technical data and test

results.

This online resource offers a comprehensive and

regularly updated library of technical product information,

test certifications and resources, tailored to the needs of

fire safety glass professionals. With its modern and intuitive

interface, the TechLibrary allows users to quickly find the

necessary information, saving valuable time at every stage

of the specification process.

The Pyroguard TechLibrary offers advanced search

capabilities, allowing users to filter results by country,

application, glass type, dimensions and more, ensuring

precision in the product selection process. Continuously

updated, it provides access to the latest system approvals

and compliance resources, so professionals can be

confident they are working with the most current information.

Fully optimised for mobile, it ensures essential data is

always readily available.

Dr Vince Crook, Technical Development Director at

Pyroguard, said: “We understand that sourcing accurate

technical data for projects can be challenging, particularly

when compliance and safety are at stake. Every piece of

test data is critical to ensuring that projects meet rigorous

safety standards. The TechLibrary simplifies this process by

putting the information at users’ fingertips. It enables them to

find the correct data with confidence, whether they’re in the

office or on-site.”

Now available in six languages, the Pyroguard

TechLibrary is a valuable resource for architects, specifiers

and contractors. It streamlines the fire safety glazing

specification process, while reinforcing Pyroguard’s

commitment to supporting its customers, making

information accessible and offering high-quality assistance

– ensuring the right products are specified with confidence

every time.

www.pyroguard.eu/resources/techlibrary

31


EDUCATION

THERMAL COMFORT TO

BOOST LEARNING ENVIRONMENTS

FOR PUPILS

The Wraptite external air barrier from A. Proctor Group

has helped create state-of-the-art learning

environments for more than 4,500 Scottish pupils.

Specify & Build reports.

The specification and installation

of A. Proctor Group’s Wraptite

external air barrier is helping three

secondary school projects in Scotland

to achieve the Passivhaus standard.

As a result of these high-quality new

school buildings, more than 4,500 pupils

will benefit from learning in thermally

comfortable classrooms with excellent

indoor air quality.

All three schools are being delivered by

main contractor Robertson Construction

Tayside. With its purpose of assuring

a sustainable future, Robertson has

developed a specialism in Passivhaus

construction, which supports its

customers, local authorities and

Government to address their low-carbon

goals.

The three schools are Perth High

School, East End Community Campus

in Dundee, and Monifieth Learning

Campus. Construction commenced

on all three within the space of a few

months in the first half of 2023.

Perth High School was the first project

to get underway. The current Oakbank

Road building is more than 50 years

old and rated ‘poor’ for suitability,

having been used beyond its design

life. The newbuild school will replace

the existing facility when it is handed

over this summer. Originally, a more

traditional design and specification was

intended for the construction, which will

be used by 1,600 pupils and 140 staff.

The Passivhaus approach was adopted

during the design process and required

minimal alteration to the building’s

agreed form and location.

around 1,800 pupils, the site includes

an integrated education centre for those

with complex assisted support needs.

Also expected to be handed over this

summer, the campus’ sports facilities will

be available to local groups and clubs.

The new education and community

campus in Monifieth, near Dundee,

features a new school for 1,200 pupils

and amenities including a swimming pool

and Sport Scotland-standard athletics

facilities. Angus Council’s intention

is for the campus to be used fully, all

year round. Like Perth High School,

construction is being phased so that the

new school is constructed while the old

one remains in use. The existing facility

will then be demolished.

Installing Wraptite in different

structural solutions

The external walls of each new school

are constructed in a slightly different

way, showing that the Passivhaus

standard can be achieved using different

construction methods.

“We wanted to take what we learnt

delivering Scotland’s first certified

Passivhaus school, Riverside Primary,

and apply it to future projects,” says

Kevin Dickson, Regional Managing

Director, Robertson Construction

Tayside. “This opportunity came with the

appointment to deliver three Passivhaus

schools, constructed to realise each

local authority’s vision while generating

meaningful benefits throughout the

process.”

A similar procurement process to

Riverside Primary meant that using

Wraptite satisfied the requirement for

using local suppliers, on top of the

experience gained in using it to meet the

airtightness requirements.

Perth High School is a concrete frame

with mineral wool insulation and a facing

brick facade. The school buildings to

the other two campuses feature a mix

of concrete and steel frame, with highperformance

insulation. Facing brickwork

is the finish at Monifieth, while East End

Community Campus will have finishes of

facing brickwork, precast concrete and

cladding.

Wraptite is well-suited to Passivhaus

projects, and the different construction

methods demonstrate its versatility in

helping meet the standard’s high levels

of airtightness. By moving the airtight line

to the exterior face of the wall structure,

it avoids a lot of complex detailing

around services and other penetrations

that typically occur at the internal face.

proctorgroup.com/products/wraptite

Two Dundee high schools also nearing

the end of their life – Craigie High

School and Braeview Academy – will be

replaced by the East End Community

Campus. Designed to accommodate

32

32_SB0525.indd 2 23/04/2025 21:25

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EDUCATION

ACCELERATING HEAT

DECARBONISATION IN SCHOOLS

Could prefabricated heating solutions offer an answer to decarbonising heat in

existing school buildings? Neville Radford, National Education Sector Manager at

Baxi, discusses the benefits of taking it offsite.

The Department for Education is

requiring all schools to have a

dedicated net zero lead and a

climate change plan in place this year.

According to the latest government

figures the education estate accounts

for 36% of total UK public sector

building emissions, of which schools

alone are responsible for almost a

quarter. Decarbonising these buildings

is central to the government’s net zero

strategy, but progress remains slow, with

concerns that only 20% of England’s

school estates will be net zero compliant

by 2050.

Schools need support to make their

heating systems less carbon intensive,

and one tried-and-tested solution for

harder-to-treat school buildings might

be to combine a hybrid approach with

prefabrication techniques.

Overcoming retrofit challenges

The ultimate goal is to move to an

all-electric heating system, with heat

pumps one of the favoured technologies.

Certainly, heat pumps can provide a

highly efficient, sustainable method of

supplying low-carbon heating or hot

water requirements. But while newbuild

schools will be designed for net zero,

decarbonising heating systems in

existing school stock can be more

complex. Technical difficulty, additional

power requirements, and the age of

the building are just some of the core

challenges identified by school estates

managers.

So how can we help schools get off the

starting blocks? The first step should

always be to identify any achievable

opportunities to reduce heat losses and

energy demand, lowering the capacity

of heating plant required and the capital

expenditure. But what about when fabric

upgrades are not an option, perhaps

due to listed status or cost implications?

Or when sites don’t have the space

or electrical capacity? One practical

option might be to consider introducing

a hybrid heating system that combines

air source heat pumps (ASHPs) with

existing heating infrastructure using a

prefabricated packaged plant room.

Even a modestly sized heat pump can

decarbonise up to 80% of the heat in

the building, with a hybrid approach

nearly always a fast, affordable and

efficient solution. As hybrid systems

also reduce requirements for electrical

capacity and available space, they can

make school decarbonisation projects

more technically and commercially

viable. While the solution would leave

some reliance on gas boilers, these

can be swapped out at a later stage to

achieve full decarbonisation. Combining

this approach with prefabrication could

enable accelerated heat pump retrofits

across the UK’s existing school estate.

Pre-engineered solution

The prefabricated packaged plant room

might contain a combination of plant and

accessory modules including water-towater

(booster) heat pumps, boilers,

pressurisation units, expansion vessels,

buffer vessels, circulating pumps and

pipework in a standardised layout. These

would be connected to external ASHPs

or evaporators connected to split system

heat pumps within the plant room.

Hybrid heating solutions and

prefabricated plant rooms enable a costeffective,

faster and less disruptive retrofit

process, lowering operational costs over

time. Pre-engineering the solution makes

The ultimate goal is to

move to an all-electric

heating system, with

heat pumps one of the

favoured technologies.

it possible to scale up decarbonisation

across the school estate, with increased

standardisation leading to lower costs.

Production and delivery lead time are

also reduced, maximising efficiency.

Prefabricated plant rooms are plug-andplay

systems, pre-wired and factory

tested for rapid, simple connection

and preassembled in sections or as

a single lift for easy placement in the

school grounds. With installation times

dramatically reduced and minimal on-site

disruption, school estates managers are

no longer restricted to carrying out larger

heating system refurbishments within

summer holidays.

Prefabrication also benefits contractors,

allowing them to use their time more

productively. With a single point of

contact for the entire system, the

potential for delays is minimised,

helping projects remain on schedule.

It also enables just-in-time delivery,

which simplifies site management by

eliminating the need to store equipment

on site.

As the packaged plant room is

manufactured to specification in a factory

setting, using specialist machinery

and under tight control procedures,

quality assurance is notably high.

Finally, off-site fabrication can deliver

significant reductions in waste and

carbon emissions, contributing to school

sustainability goals by using energyefficient

solutions and modern methods

of construction.

www.baxi.co.uk/commercial

34

34_SB0525.indd 2 23/04/2025 10:32

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S&B_Wraptite_Sman_210x297mm.indd 1 09/04/2025 12:28:32


EDUCATION

ACHIEVING SUSTAINABLE SOLAR

ROOFING FOR SCHOOLS

Creating sustainable environments in

our schools is crucial, particularly as

schools across the UK are under

increasing pressure to reduce their

carbon footprint, improve energy

efficiency and embrace renewable

technology. Kalzip explains how this was

achieved in two of Aberdeen’s newest

schools.

A

specialist roofing system from Kalzip has been chosen

for two of Aberdeen’s newest schools and community

hubs as part of an investment of more than £40 million.

Greythorpe School & Community Hub, and Countesswells

Primary School, will cater for a total of 1,028 pupils and feature

everything from housing, nursery services, café’s and a 3G

seven-a-side football pitch, among other resources.

Delivered by Hub North Scotland, with Morrison Construction

Building North East as the main contractor and Halliday Fraser

Munro as architects, the Kalzip system was specified as the

roofing system on both schools. The system was chosen for

its incredible sustainability benefits, along with the speed of

installation. Kalzip 65/400 with a Dark Grey/Anthracite Grey

finish was selected for the project but with a key specificity

– the panels were provided as part of a whole solar panel

package for the schools.

First approached by Aberdeen City Council, the brief was to

provide a roofing system that incorporated solar panels as part

of a commitment to address carbon emissions with the new

facilities. Initially, the design plan was to source and specify the

solar power system separately, but as Kalzip provides bespoke

solutions for each project, a system that packaged the roofing

and solar components with a laminate protecting finish was

pitched. Following a series of information sharing regarding the

schematics of installation and power output, the package was

accepted and specified for the project.

Chris Goldie, Regional Sales Manager Scotland at Kalzip,

says: “One of the challenges of installing solar panels as an

additional product following the installation of the roofing is

the added traffic on the surface during the application of the

panels. While durable and rigid, this can lead to imperfections

on the finish and even small areas of aesthetic damage on the

roof surface.

“Being able to provide this solution as a package for the

project provided a number of benefits to the client such as

the cost-effectiveness and time-saving through not specifying

separately, along with a fully integrated system that was

installed and completed in a far quicker time.”

Both Greythorpe School & Community Hub and Countesswells

Primary School was completed on time and within

budget, which was attributed to the collective effort of the

subcontractors involved.

Ewen Fowlie, Operations Director for Hub North Scotland,

says: “Countesswells has been a brilliant school project and

the result is a fantastic building which has been completed

early and defect free. It will be a popular landmark for

generations to come as this community continues to grow.”

Mike Bruce, Managing Director of Morrison Construction

Building North East, adds: “It’s very satisfying to see all the

hard work of our team and our local subcontractors being

so well received. We are extremely proud of the high-quality

learning environment that we’ve played our part in delivering,

and seeing the smiles and excitement amongst all the pupils

today makes all our efforts worthwhile.”

www.kalzip.com/en

36_SB0525.indd 2 21/04/2025 20:39


EDUCATION CASE

STUDIES

SCHOOL UNVEILS SUSTAINABLE SPORTS FACILITIES

Edgeborough School has raised the bar for pupil facilities

with the unveiling of its brand-new changing block – an

eco-conscious, architecturally stunning addition designed

to elevate both sports and well-being.

Crafted by TG Escapes, this forward-thinking facility

blends modular construction with biophilic design

principles – ensuring not just functionality, but a space

that enhances mental wellbeing and fosters a deeper

connection with nature.

Built in just five months, the new development features

two spacious changing rooms, each accommodating up to

54 pupils aged 9-13, complete with showers, toilets, and

essential storage spaces. A large, sleek canopy seamlessly

connects the new building to the existing sports hall,

offering covered access in all weather conditions.

Timber cladding was used throughout the building, while

biophilic design elements – such as three large roof lights

in the canopy – were incorporated to maximise natural light,

creating a bright and inviting space for all to enjoy.

This milestone investment underscores Edgeborough

School’s commitment to sustainability and excellence,

delivering an inspiring environment where pupils can thrive,

both on and off the field. The bespoke building has been

meticulously designed to achieve net-zero in operation.

Mr. Daniel Cox, Edgeborough School’s Headmaster,

said: “We’re delighted to unveil this new changing room

block, which will have a real impact on our pupils’ sporting

experiences. It’s a space that blends modern design with

sustainability and accessibility, and part of our commitment

to ensuring Edgeborough pupils have the best resources

available.”

Tom Hillier, Project Manager at TG Escapes, said: “It has

been a pleasure working with Edgeborough School on this

project. Our goal is always to create environments where

students and staff can thrive, and this has been achieved

through thoughtful sustainable design and material

choices. This new development provides a functional, high-

quality space that will benefit pupils for years to come.”

TG Escapes predominantly focuses on the education

sector. The company uses a method of modular

construction that creates a cost-effective permanent

structure faster, with less disruption than traditional

construction, ensuring educational continuity for staff and

students.

tgescapes.co.uk

RESEARCH REVEALS SIGNIFICANT SOLAR OPPORTUNITY FOR SCHOOLS

Schools and hospitals should leverage funding to install

solar carports, a renewable expert has said, after research

revealed a significant power generation opportunity

from car parks. Damian Barker, Managing Director

of RenEnergy, has said institutions could regain control

of their finances and energy supply if they elect to use

the government’s new £180 million funding to install this

method of solar energy generation.

RenEnergy has commissioned ongoing research to

identify how many parking spaces could be suitable for

installation. So far, more than 151,000 suitable parking

spaces have been identified across schools, colleges,

universities, hospitals and medical facilities in England and

Scotland, which could produce over 350GWh of power –

enough to cover the average annual consumption of over

97,000 UK homes.

With the UK having 32,149 schools and 1,148 hospitals,

the research has only scratched the surface of the amount

of green power that could be produced. If schools used the

first major investment from the government’s state-owned

power provider to invest in solar carports, they could use

the now available energy funds to finance a variety of much

needed assets.

With the teaching crisis putting substantial pressure on

senior leadership to retain talent while balancing costs,

reducing energy bills could allow schools to attract new

educational providers and vital equipment and resources.

Schools do not need to apply for planning permission due

to the installation being covered by permitted development.

Once built, management will have to contact the District

Network Operator (DNO) to secure grid capacity.

Damian said: “The government has made its plans clear

to help reduce the carbon footprint of schools and hospitals

by investing in green power solutions. Carports could have

a significant role in the rollout of this £180 million funding,

helping institutions regain control of their finances and

invest in the future.”

www.renenergy.co.uk/carports

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38_SB0525.indd 2 23/04/2025 21:36


ROOFING & CLADDING

EAVES DETAILING PRODUCTS

OFFER MULTIPLE SOLUTIONS

Manthorpe explores the considerations specifiers must take into account when

designing roof eaves to ensure a strong, stable build without water ingress or

condensation issues.

The roof eaves is the lowest

area of a pitched roof and,

as such, it must shed all the

water that the roof collects

over its entire surface into

the gutters. It is important to design and

construct the eaves correctly, to ensure

that it will remain durable and prevent

water ingress into the structure. A

secondary function of a roof eaves is to

provide a ventilation air path into the roof

void to control condensation.

Given the importance of the eaves, it is

surprising how often their design and

construction is poor, leading to leakage

problems, sometimes straightaway or,

more commonly, later when components

degrade.

Important elements to consider when

designing the eaves are ensuring proper

support for the underlay and correct

alignment of the eaves course tiles. In

a typical UK cold roof construction, the

underlay is laid unsupported between

rafters, which are generally set at up

to 600mm centres. This is fi ne for the

general roof areas, but continuous

support must be provided behind the

fascia or tilt fi llet to prevent the underlay

sagging and creating a trough which

could collect and hold water. If water

does collect behind the fascia, it will

The eaves course tiles

should be set at the

same angle as the tiles

in the roof areas above.

If they are not, then the

risk of water ingress is

increased.

40

40_SB0525.indd 6 23/04/2025 10:42


cost effective in supporting the underlay

than purchasing plywood, with all the

additional labour and time in cutting it to

fit and installing it.

Another objection to the use of

proprietary underlay support products is

the perceived difficulty in the retro fitting

or cleaning of gutters. However, this is

not the case with the Manthorpe 2-in-1

and 3-in-1 ventilators. Properly fitted,

with the gutters installed in the correct

position, the ventilators do not impede

access to the gutters in any way.

ROOFING & CLADDING

inevitably find its way through any small

cuts or nail holes in the underlay and into

the structure. Longer term the underlay

will rot, causing further leakage. Modern,

lightweight, vapour and air permeable

underlays are not UV-resistant in the

long-term, so they should not be draped

into the gutter as was the practice with

bituminous underlays.

Consideration should also be given to

the correct alignment of the roof tiles,

particularly when using single-lap tiles.

The eaves course tiles should be set at

the same angle as the tiles in the roof

areas above. If they are not, then the

risk of water ingress through the tiling is

increased.

Ensuring proper ventilation

Traditionally, underlay support was

provided by a timber detail, usually

plywood. However, in modern

construction, time and cost efficiencies

are key objectives, and the best

way to achieve these are by using

well-designed proprietary products.

Manthorpe has more than 35 years of

experience developing roofing products

and solutions that deliver benefits to the

construction industry. Regarding eaves

detailing, our design team has come

up with our 2-in-1 Ventilator and 3-in-1

ventilator products.

These products combine an underlay

support tray, to prevent the underlay

sagging behind the fascia, with an over

fascia ventilator and insect grille under

the support tray to provide 10,000mm 2

per metre of air flow into the roof space.

The insect grille prevents access into the

roof void by nesting insects. The 3-in-1

ventilator has the addition of an integral

eaves comb filler to prevent access into

the roof void by birds and rodents when

using profiled roof tiles.

The support tray is sufficiently robust

to properly support the underlay, while

the front edge is angled to aid water

run-off into the gutter and is thickened to

provide a robust support for the eaves

course tiles. There are clear and stable

fixing points into the top of the fascia,

with drainage gullies around each point

to prevent water ingress. Further fixing

points are incorporated for secure fixing

to the rafters. The support tray is wide

enough for use at low pitches and is

ingeniously designed with a live hinge

between the front edge and support tray

to enable the ventilators to be used on all

roof pitches from 15° up to 70°.

The 2-in-1 and 3-in-1 ventilators are

suitable for use on refurbishment

projects as well as fast installation on

new buildings. They are supplied in a

one-metre coverage length for ease

of estimating and ordering, plus side

interlocks to provide fully supported

overlaps between each unit.

One objection to the use of a ventilated

eaves support system is that additional

ventilation may not be deemed

necessary due to the type of permeable

membrane. However, just as with dry

ridge systems, the ventilation element

of these products is a bonus; using the

2-in-1 or 3-in-1 ventilator is still far more

A feature of the 2-in-1 and 3-in-1

ventilator is that the underlay can easily

be taped to the underlay support tray to

stop the underlay flapping in the wind – a

common occurrence with lightweight

underlays. If the underlay does not have

integral fixing tape, then double-sided

underlay tape can be used.

An important point to address is that

of the fixing of the eaves course tiles;

BS 5534 requires that all single lap

tiles be twice fixed at perimeters.

How this is achieved depends on the

type of tile and the calculated roof tile

fixing specification. Tiles with two nail

holes can be head nailed to satisfy the

requirement for two fixings. However,

if the tiles only have one nail hole, or

twice nailing is insufficient to resist the

calculated wind uplift load, then the tiles

must be clipped at their tails.

Tile eaves clips are generally nailed into

the top of the facia or tilt fillet, which

means the nails having to penetrate the

underlay support tray. This is generally

accepted as a small compromise in

ensuring that the tiles are adequately

fixed. However, for an extra layer of

protection, bituminous nail tape can be

run along the fixing points, which will seal

around the nails and thus prevent water

running through the nail holes.

Manthorpe 2-in-1 and 3-in-1 ventilators

provide a quick to install, economical,

robust solution for roof eaves in

refurbishment and newbuild projects.

www.manthorpebp.co.uk

41

40_SB0525.indd 7 21/04/2025 21:08


ROOFING & CLADDING

PRODUCTS

ACCUROOF LAUNCHES FREE UPSKILLING SCHEME FOR ROOFING CONTRACTORS

AccuRoof, the specialist advisory roofing experts at

SIG Roofing, has introduced the new AccuRoof Roofing

Contractor (ARRC) scheme. This program offers exclusive

support, with members gaining access to unique products,

tiered training, technical advice and potential new business

wins.

A significant portion of AccuRoof’s business comes from

contractor customers. Their team offers these customers

accurate and impartial advice on a wide range of roofing

projects, whether commercial or residential, large or small.

The scheme’s goal is to provide ongoing technical training

to upskill roofing contractors in the constantly evolving

range of roofing products and techniques, as well as to

raise awareness of relevant compliance requirements. This

ensures that best practices are applied, lowering project

risks, with the resulting quality reflected in the exclusive

warranties that distinguish projects completed by ARRC

members.

AccuRoof has six regional training centres across the

UK, with training covering topics such as liquid systems,

single ply, hot melt applications, and green and blue

roofing products. Currently, training is free of charge for

ARRC members. As contractors complete more training

and demonstrate their skills through audits, they can

achieve bronze, silver, gold, or platinum status. At each

stage they will receive digital certification to recognise their

accomplishments.

The team at AccuRoof has been providing technical and

compliance advice on roofing to architects and specifiers for

many years. The new scheme will instill confidence in those

responsible for any new or refurbishment project on the

installation of their chosen roofing systems.

accuroof.co.uk

FLEX-R RUBBERBOND FLEECEBACK EPDM PASSES CCPI ASSESSMENT

RubberBond FleeceBack EPDM, available exclusively

through Flex-R, has passed the Code for Construction

Product Information (CCPI) assessment. This third-party

assessment confirms that all the information provided by

Flex-R on this system is clear, accurate, accessible, up-todate,

and unambiguous, making it easier for specifiers to

make an informed choice.

Rubberbond FleeceBack EPDM is a 1.2mm-thick EPDM

membrane and 1.8mm fleece that offers up to 40% greater

puncture resistance, and 180% greater tear resistance, than

non-reinforced 1.52mm EPDMs. It can be used for various

flat roofing projects, whether an overlay for an aged roof

system, a roof renovation, or a newbuild project. It can also

be installed in small or large commercial situations.

The CCPI is becoming an important tool for anyone

purchasing construction materials. It was developed

through industry consultation initiated by the Construction

Product Association (CPA) in direct response to Dame

Judith Hackitt’s review after the Grenfell tragedy and

the resulting Building Safety Act. It was created by a

group of manufacturers who agreed to raise standards in

construction and transition the industry to a point where all

product information provided by a manufacturer, merchant,

or distributor adheres to this ethos. The ultimate goal is for

clients, specifiers, and users to demand only products that

comply with the CCPI.

The CCPI includes three distinct codes; the first for

manufacturers, which focuses on the responsibility for

accurate product information and the assessment of product

claims. The second is for supporters, which includes clients,

major housebuilders, and Tier One contractors advocating

CCPI adoption through their supply chains. Finally, the

code for merchants and distributors emphasises processes

and systems for creating, reproducing, and accurately

representing product information.

Flex-R has successfully passed the CCPI assessment

for its RubberBond FleeceBack EPDM system, while Flex-R

achieved the Merchant and Distribution version of the CCPI

code in June 2024.

flex-r.co.uk/rubberbond

42

42_SB0525.indd 4 23/04/2025 10:43

MANY –“AS BUILT FIRE TESTS”

ENABLES COMPLIANCE WITH B.S.A.

A1 NON-COMBUSTIBLE

ROOFING BOARD

TESTED AND CERTIFIED FOR

Multi-Purpose Sheathing | Bitumen Felt | Capping

Recovery & Protection Board | Liquid Waterproofing

Lead & Hard Metals | Single Layer membranes

magply.co.uk | 01621 776252 | sales@magply.co.uk


ROOFING & CLADDING

Wayne Chissell, Technical

Director at WestWood,

explains how PMMA

liquid-applied membranes

contribute to more

sustainable newbuilds and

refurbishments.

As the demand for sustainable and

energy efficient buildings grows,

the impact of roofing materials

has become a crucial consideration.

The products used in a roofing system

can significantly affect energy efficiency,

carbon emissions, waste, and a

property’s lifespan. The waterproofing

layer plays a vital role in enhancing

sustainability, with cold-applied PMMA

(Polymethyl Methacrylate) liquidapplied

membranes offering several

environmental advantages.

Cooler roofs

Incorporating solar reflective materials

on the roof is an effective way to make a

building more sustainable. By reflecting

sunlight and reducing heat absorption,

these materials improve energy

efficiency, enhance indoor comfort and

mitigate the urban heat island effect.

Reduced heat exposure decreases

thermal stress too, helping to extend the

roof’s lifespan.

Available in a range of light colours,

including white, beige and pale grey,

PMMA liquid-applied membranes can

achieve a solar reflectance of between

0.60 – 0.85 and Solar Reflective Index

(SRI) values above 80. Solar reflectance

is measured on a scale from 0 to 1,

and the SRI is calculated by combining

reflectivity and thermal emittance - the

higher the value, the cooler the surface.

Advances in technology have also

introduced a PMMA-based seal coat

THE ROLE OF PMMA IN

SUSTAINABLE DESIGN

with a solar reflectance of 0.94 and an

exceptionally high SRI of 114, which can

significantly lower roof temperatures by

up to 20°C.

Lower carbon emissions

PMMA-based systems are solvent free

and cold applied, eliminating the need

for hot works. This significantly reduces

carbon emissions during installation

while enhancing site safety. Bituminous

waterproofing membranes that require

heat to install often use torches fuelled

by Liquefied Petroleum Gas (LPG).

However, based on data from the US

Energy Information Administration,

burning just 1kg of LPG releases, on

average, approximately 2.98kg of CO 2

into the atmosphere. As circa 47kg of

LPG are required to install 150m 2 of

bituminous membrane, the emissions

are substantial, even on smaller roofs.

A cold-applied PMMA waterproofing

system requires no LPG-fuelled

equipment. The waterproofing layer is

applied ‘wet-on-wet’ with a polyester

reinforcement fleece, bonding

seamlessly to the substrate. Once

cured, within approximately 25 to 30

minutes, the surface layer is installed

onto the waterproofing to form a single,

uniform membrane. Cold-applied PMMA

systems are also low in volatile organic

compounds (VOCs), further reducing

their environmental impact compared to

solvent-based alternatives.

Built to last

PMMA’s chemical structure is free

from plasticisers and provides a high

tensile strength and elasticity. These

characteristics ensure the membrane

can withstand structural and thermal

movements and is highly resistant to

UV radiation, making it highly durable.

When installed correctly by an approved

contractor, the PMMA build-up can

be guaranteed for up to 25 years,

reducing the need for any repairs and

the associated waste, transport journeys

and carbon emissions. If a PMMA-liquid

applied membrane does get damaged

or reaches the end of its design life, it

can be overlaid rather than replaced

entirely.

Maximising green credentials

For specifiers seeking to enhance

sustainability through a green or blue

roof design, PMMA is compatible with

both. When tested and certified in

accordance with FLL guidelines, the

membrane will be root resistant and

have the durability to cope with the

planting’s load bearing requirement

as well as any post-build settlement.

PMMA’s high tensile strength and

flexibility also makes it suitable for

blue roof construction, with the liquid

application suitable for projects with

extensive detailing.

If solar panels feature as part of the roof

design, PMMA can be used successfully

with ballasted or mechanically fixed

PV systems. The membrane forms a

monolithic, fully bonded waterproofing

layer, reducing the risk of water

ingress around the joints and fixings.

Its resistance to UV and extreme

temperatures also means it won’t

degrade.

By specifying PMMA, architects and

contractors can help to enhance the

performance of a roof while reducing

environmental impact. The membrane’s

durability, cold-applied installation, and

ability to reduce heat absorption play a

key role in enhancing energy efficiency,

reducing CO₂ emissions, and supporting

sustainable building practices.

www.westwood-uk.com

44

44_SB0525.indd 2 23/04/2025 20:30

total

ventilator

solutions

Roofing Innovation with Manthorpe!

With over 35 years of expertise, Manthorpe delivers cuttingedge

roofing products designed to enhance every build. Our 2

in 1 Ventilator and 3 in 1 Ventilators are the complete solution for

eaves detailing, offering both ventilation and robust protection.

Easy to install and engineered for superior performance, they

ensure optimal airflow and long-lasting durability.

Choose Manthorpe for smarter, more efficient roofing solutions —

because quality starts from the top.

G1295

2 in 1 Ventilator

G1296

3 in 1 Ventilator

Contact us today on 01773 303000 or

mbp.care@manthorpebp.co.uk to

learn more and place your order!

“I have to say I love it

[Manthorpe’s

2-in-1ventilator] the vent

part at the bottom allowing

your roof to breathe. These are a

great thing.”

Ben Hulme of Ben Hulme Roofing

www.manthorpebp.co.uk

ROOFING & CLADDING

Image credit: AkzoNobel

KEEP UP WITH COLOUR TRENDS

The colour and texture of a façade determines how a building looks. It communicates

purpose and identity, influences people’s perception of the building and, often, the

businesses and individuals within. John Park-Davies, Group Managing Director of Vertik-Al,

explores some of the recent building façade colour trends.

Colour is used to boost aesthetic

appeal, evoke emotions, and

blend or contrast a building with

its surroundings. To achieve this in the

long term, colourfastness and durability

are crucial. For optimum performance,

many façade designers opt for a

powder-coated finish, especially when

working with architectural aluminium,

such as cladding and curtain walling.

As a large, UK independent powder

coater of architectural aluminium, we

powder coat aluminium bar length

and items for many industries and

applications, which directly influences

the powders we use.

Neutrals dominate

Each year we conduct a colour audit,

which gives us valuable insight into

current and future colour trends. Last

year we applied thousands of different

shades, textures and finishes, but overall

usage was dominated by neutrals and

greys. In fact, neutral colours account for

11 of our top 20 most-applied powders.

Those who follow our journey will know

that Anthracite Grey in a matt finish has

been a firm favourite for several years

now, and there was no change in 2024.

With universal appeal, RAL 7016 was the

most popular powder colour.

However, black and white powders

were also used commonly during 2024.

Jet Black and HIPCA White sit behind

Anthracite Grey as our second and third

most used powders, respectively. Other

high-ranking neutrals include Signal

White, Pure White, Signal Black and

Traffic White. HIPCA White is also the

only top 20 powder to feature in both

matt and gloss finishes.

These tones have been slowly regaining

ground over the past couple of years.

While we apply vast quantities of

Anthracite Grey, combined, black and

white hues are used most consistently.

This is likely due to their broad appeal

and ability to contrast or enhance other

architectural details.

Warm greys

Most evident last year, perhaps, was the

greater use of warm greys. Khaki Grey,

Moss Grey, Silk Grey and Pebble Grey

all rank in our top 20 most-used powder

colours. Unlike the perennially popular

Anthracite Grey, Basalt Grey, Slate Grey

and Black Grey, these greys are much

softer. Warm and calming, they are

enriched by natural light, making them

ideal for cladding and facades. Their

increased use suggests the cool grey

trend may even be in decline.

Super-durables

As well as retaining the top spot,

Anthracite Grey also featured in 16 th

position, but this time in an ultra-durable

powder coating - Interpon D2525 Matt.

This is a series of powder coatings with

exceptional weather resistance, offering

outstanding gloss retention, resistance

to colour change, and maximum film

integrity. They are Qualicoat Class 2

certified and GSB approved.

Qualicoat Class 2 powders are better

known as super-durables. Developed in

the 1990s, super-durables now boast a

track record exceeding 30 years in the

field and, with greater awareness and

demand for long-lasting performance,

their use is growing steadily. We have

decades of coating experience using

super-durables and, as a result, we

offer extended warranties on Class 2

powders.

Our most popular colours aside, we

have also been using smaller quantities

of more interesting colours and finishes,

such as metallics, anti-graffiti and nonslip.

We know that metallic effect powders in

Anodic Bronze and Anodic Steel Bronze

are already popular with designers,

but last year we added another to the

list – Anodic Champagne. Just like the

shift from cool to warm grey tones, this

metallic is far warmer than either Anodic

Bronze or Anodic Steel Bronze. We also

received a request to colour match one

of Farrow & Ball’s Traditional Neutrals –

No.4 Old White.

www.vertik-al.com

46

46_SB0525.indd 2 23/04/2025 20:32

Scan the QR

code or visit

www.glidevaleprotect.com/

wholehouse


ROOFING & CLADDING

SCHOOL ENJOYS STUNNING

HYBRID STRUCTURED PAVILLION

The new Beech Court Pavilion at Abingdon School in Oxfordshire has been constructed to

connect the existing Amey Theatre to the main school via a dynamic, multi-functional

space. Here, Alex Brock, Pre-Construction Manager from B&K Structures, explains.

Beech Court Pavilion seamlessly blends slender glulam

beams and a supporting steel structure – crowned by

green roof planting above extensive glazed elevations –

to form an elegant and multi-functional space for dining, study

and social activities, with green views in all directions.

The complex steel canopy frame and exposed glulam diagrid

roof was installed on site by B&K Structures in just eight

weeks, along with also completing the connection design.

A key design ambition was to connect the students to

nature, and the final visual impact of the pavilion showcases

the aesthetic and biophilic benefits timber can bring to an

education setting.

The project team brought together David Morley Architects

and engineersHRW, with Beard Construction as the main

contractor. B&K Structures (BKS), a leading UK specialist

timber and timber-steel subcontractor, was awarded the

contract to complete the connection design, fabricate and

erect the complex octagon roof, with 35m 3 of visual grade

glulam beams manufactured by BKS’ timber supply chain

partner Rubner.

Alastair Wood, Senior Architect at David Morley Architects,

says: “The design concept was to create an elegant pavilion

that provides a flexible dining space within a garden setting.

This put an emphasis on the transparency of the façade,

daylight and connection between inside and outside – a

key element of which was to have a continuous glazed

external perimeter, with a roof floating above, using generous

overhangs to provide solar shade to the interior and shelter to

the outdoor spaces.”

developing engineersHRW’s 3D model into fabrication

information, a meticulous logistics plan, regular engineer

inspections and early engagement from the BKS installation

project manager. Finally, minimal yet skilful alterations were

made by the BKS erection team on site including cutting,

realigning, tack-welding, re-checking and completing a full arcweld

in situ.

BKS Drawing Office Manager Glyn Hubbard concludes:

“Every project brings a number of challenges to be overcome

– including coordination of information from other subcontractors

and trades and tight site programmes – but

this was exacerbated on Abingdon, given the complexity

of the roof structure setting-out, and the individuality of the

connections to be made, while simultaneously achieving the

aesthetics throughout.”

The Pavilion exemplifies the capabilities of structural timber: not

only meeting the clients’ aesthetic and biophilic requirements,

the timber on the project also brought sustainability credentials,

with the 34.896m 3 of glulam sequestering 24.543 tonnes of

CO 2

e from the atmosphere. Contributing to circular economy

principles, when properly fabricated, installed and maintained,

the structural timber also offers a long working life with the

potential for reuse, while PEFC chain of custody guarantees all

of the trees used will have been replaced by new growth in just

seven seconds. The result at Abingdon School is testament to

the close design collaboration from the project delivery team

and the technical expertise from BKS.

www.bkstructures.co.uk

The sheer complexity of the pavilion’s roof structure posed

unique challenges in terms of design, planning, prefabrication

and the subsequent installation.

Andy Holland, BKS Operations Manager, explains: “We

had to build the roof as four separate quadrants supported

by temporary falsework columns. However, as they met at

different angles of pitch, the geometry of the connections was

very complex and required strong technical skill. As a result, a

constantly changing variety of stub plates coming off the main

steelwork were required.

“The buildability and temporary works review was also

unusually challenging, and the tolerances on both fabrication

and installation were far tighter than is normal: a maximum

of 5mm rather than 10mm – even a very small error on the

steelwork would have made it impossible to align and fix the

glulam beams.”

B&K Structures met and addressed these construction

challenges through a collaborative process that combined

48

48_SB0525.indd 2 22/04/2025 08:47


EUROFORM’S WEATHERCLAD MEETS BRIEF FOR ILFRACOMBE HOMES

Euroform’s WeatherClad wood effect shiplap planks have

been selected for Devonshire Homes’ new Ilfracombe

development, Mariner’s Haven. Euroform is supplying

the low maintenance, fi bre cement planks, which are

manufactured according to BS EN 12467: 2012+A2:2018

and have BDA Agrément certifi cation, in six bespoke

colours.

Devonshire Homes has designed the Mariner’s Haven

homes in sympathy with the landscape. A number of the

house types will feature half shiplaped exteriors to refl ect

the character of the development’s coastal location in an

elevated position overlooking Ilfracombe. Mariner’s Haven is

delivering 347 new homes, including 38 affordable homes,

ranging from one and two bedroom apartments to two, three

and four bedroom houses. The fi rst homes were released for

sale in late 2024.

Performance and look were key criteria for product

selection for Devonshire Homes. Initially Euroform provided

samples of eight bespoke colours, from which the

housebuilder chose six to depict sand, grass, sea and sky.

WeatherClad is also available in 21 standard colours, plus

RAL and NCS colours on request, and Euroform provides a

comprehensive range of colour matched profi les and trims.

The natural timber effect of WeatherClad, with its random

embossed grain, and the width of the board will both add

to the pleasing look. WeatherClad boards are 230mm wide,

wider than most similar boards on the market.

WeatherClad carries third-party BDA Agrément

certifi cation from KIWA, a certifi cation recognised by

architects, specifi ers, engineers and building control

personnel. Certifi cation confi rms the product’s suitability and

fi tness for purpose in terms of performance and durability.

WeatherClad has a European Classifi cation of A2-s1,d0 for

Reaction to Fire in accordance with BS EN 13501-1.

Weatherclad is part of the range of Euroform’s Code for

Construction Product Information (CCPI) assessed products.

Euroform has been developing, fabricating and supplying

materials for the construction industry since 1995,

specialising in ensuring fi re and thermal compliance across

its product range. It is part of the Performance Technology

Group, a group of companies supporting the construction

industry to meet acoustic, fi re, thermal and vibration

challenges.

www.euroform.co.uk

ROOFING & CLADDING

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49

49_SB0525.indd 5 25/04/2025 09:25


ROOFING & CLADDING

CASE STUDY

ROBUST ROOFING FOR THE

GOODS YARD REGENERATION

Langley’s HM-30 Paratech

roofing system has played

a key role in ensuring

durability and

sustainability at a pivotal

development in Stoke.

As part of the wider regeneration

efforts at the heart of Stoke’s

evolving urban landscape,

The Goods Yard project is a pivotal

development within the Stoke Station

Masterplan. Located alongside the

Trent and Mersey Canal, this ambitious

rejuvenation work aims to transform

a tired industrial area into a thriving

micro-neighbourhood. The Goods Yard

consists of 174 design-led, build-torent

apartments and, with a 30-month

project timeline, the roof needed to

be completed to a high standard, on

schedule, and within budget.

Working in close collaboration with Main

Contractor Bowmer + Kirkland and

roofing contractors Advanced Roofing,

Langley provided a roofing solution that

met the specific requirements of this

newbuild residential development.

In response to Bowmer + Kirkland’s

preference for a hotmelt waterproofing

solution, Langley proposed its HM-

30 Paratech system – a fully bonded,

purpose-developed system for

newbuilds. The HM-30 Paratech

system offers a BBA-certified durability

statement of ‘the service life of the roof’,

making it an ideal choice for a project

where performance and longevity were

paramount.

The system’s speed of installation was

also a key consideration. Langley’s

second-generation hotmelt offered

considerable time savings over its firstgeneration

counterparts, helping the

project adhere to its tight construction

schedule without compromising on

quality. As the project moved forward,

the use of HM-30 Paratech allowed the

roofing work to be completed on time,

despite the complexities associated with

the development’s rapid timeline.

Sustainable and cost-effective

roofing

The thermal performance of the roofing

system was another critical factor not

just for the client and build, but longer

term for the residents occupying the

homes. With help from Langley’s roofing

solution, The Goods Yard achieves

a U-value of 0.2W/m²K. Aligning

with broader sustainability goals, the

building offers numerous advantages

for future residents such as enhanced

living comfort, financial savings from

lower energy bills, and a positive

environmental impact due to reduced

energy consumption and a lower carbon

footprint.

Langley also provided an Independent

Insurance Backed Guarantee (IBG) for

additional peace of mind. This provides

an extra layer of assurance, ensuring

that the value of the original guarantee

is maintained for the entire duration,

regardless of the trading status of

either the installing roofing contractor

or Langley. That level of assurance was

essential to Bowmer + Kirkland, who

wanted to be certain that the building’s

roof would stand the test of time.

Collaboration and technical support

The successful delivery of The Goods

Yard relied on working closely with

Bowmer + Kirkland, with each partner

bringing their own expertise to the table.

Mark Lambkin, Contracts Manager at

Bowmer + Kirkland, says: “We use hot

melt on the majority of our schemes. It’s

a tried and tested solution to what we

found to be a problematic part of the

building. We felt Langley’s offering was

the more robust of the options available

and we were happy to collaborate with

them.”

Connor Wignall, Senior Estimator at

Advanced Roofing, says: “After previous

successful installations of Langley’s HM-

30 Paratech, it was a natural progression

to use the system again on this project.

The adaptability of product helped us

overcome sequencing issues on the

project and keep in line with programme

and cost restrictions. We had several

awkward details to overcome. The fact

that Langley have a cold applied liquid

waterproofing product compatible

with bituminous waterproofing that

doesn’t affect the IBG really came into

its own. This, coupled with Langley’s

regular site visits and reports meant the

project delivered a quality install that

was handed over to Bowmer + Kirkland

within the required timeframe.’’

langley.co.uk

50

50_SB0525.indd 2 22/04/2025 08:55


SOPREMA PROVIDES DOUBLE ROOFING SOLUTION

SOPREMA’s waterproofi ng roof systems were specifi ed in

the construction of Cheltenham Place in Salford, Greater

Manchester. Constructed by Bridgestone Construction,

with W Hughes & Son as the roofi ng contractor and Leach

Rhodes Walker as the architect, Cheltenham Place will

provide high-quality accommodation for students within the

city.

SOPREMA worked with W Hughes and Son to

identify, specify and install the Duofl ex SP waterproofi ng

system, which complied with the building’s specifi c roof

performance requirements. The speed of application was a

major infl uencing factor in product specifi cation, and a key

attribute of Duofl ex SP.

There was also a requirement to provide a full

waterproofi ng and insulation solution for the higher tiers of

the building, but due to inaccessibility for a bitumen boiler,

SOPREMA was tasked with providing an alternative solution.

DUO HT was specifi ed as a great alternative to Duofl ex SP,

without the need for a boiler, or having any impact on cost to

the client.

SOPREMA’s Alex Goodyear said: “It was fairly obvious

from the outset that we would be unable to take a boiler

to the higher stories, so we needed a solution for these

areas with the same performance as Duofl ex SP without the

client having to factor in a change in pricing. The DUO HT

system suited this perfectly, which enabled us to commence

with the installation with a clear design plan for all stories.

Additionally, the same 30-year warranty was maintained

across both products, which was another key factor in its

specifi cation.”

Sustainability is always a key consideration for modern

buildings. The Sopra XPS insulation used has a bronze

Cradle to Cradle certifi cate, which dictates that every raw

material that is used in a product must be reusable.

www.soprema.co.uk/en

ROOFING & CLADDING

CASE STUDIES

SMARTROOF HELPS BUILD ENERGY EFFICIENT APARTMENTS

Smartroof’s offsite-manufactured, modular roof system has

played a crucial role in creating energy and cost-effi cient

apartments in a Hampshire housing development.

Built by Taylor Wimpey, the Bramley Park development

in Warsash near Southampton comprises 85 new homes

including several blocks of six apartments. The primary

goal was to maximise the usable space within the roof area

of each apartment building, allowing for the addition of

two generously sized apartments per block. This demand

for additional space was met through Smartroof’s roofi ng

system, which for this project required a T-shaped design.

The compound-cut cassettes required for the roof valley

sections presented a challenge, but Smartroof’s precision

in design and offsite manufacturing allowed for a seamless

fi t on-site. By pre-fi nishing the valley sections in the factory,

this minimised time spent working at height.

A standout design feature of the project was the use of

steel purlins for each block. This eliminated the need for

pre-determined supporting walls, which in turn gave the

designers greater fl exibility in the apartment layouts.

As well as its space-maximising features, the Smartroof

system also enhanced the thermal performance of the

apartment blocks. The pre-engineered insulated roof system

provides superior insulation and airtightness, ensuring

the apartments will remain comfortable for residents while

offering improved energy effi ciency. This is an important

consideration given the growing demand for energy-effi cient

solutions across the housing market, as well as recent

changes to Building Regulations. The system comes with a

10-year warranty, ensuring the roofs will continue to perform

at a high level over time.

smartroof.co.uk

51

51_SB0525.indd 5 22/04/2025 09:05


FLOORS, WALLS &

CEILINGS

THREADING THE

NEEDLE OF

HIGH-RISE SAFETY

Alex Bardett at Ambar Kelly reveals how Golden Thread

guidance for high-risk buildings are impacting the design

and construction of riser shafts as the industry moves

towards greater transparency and incorporates the

requirements of Gateway Two.

The Construction Leadership

Council’s 2024 guidance on the

Golden Thread of Information

requirements for high-risk buildings

(HRB) has sharpened the focus on

transparency, suggesting building

designs be signed off by building control

at Gateway Two. Furthermore, any

deviations from the original specification

at this stage must be recorded in a

change control plan and reviewed by the

Building Safety Regulator (BSR).

In HRBs the safety of workers and

occupants is absolutely paramount –

hinging not just on sound design and

engineering practices but also the ability

to maintain a clear, comprehensive, and

continually updated record of all relevant

data. This is often referred to as the

Golden Thread of Information.

This concept is crucial in the

management of riser shafts – critical

components of large infrastructure that

serve as the backbone of a building by

housing key utilities and services. Playing

an indispensable role, the Golden Thread

ensures the integrity of the physical

structure while supporting its design,

construction and operation through the

provision of accurate, up-to-date and

relevant information.

The Golden Thread’s impact

With building safety now at the

forefront of the design and construction

agenda, the Golden Thread ensures

vital documents and information are

readily accessible during any stage of a

project to support the building control

process for HRBs. Aside from helping

dutyholders ensure full compliance with

regulations when they are designing

and constructing a building, the Golden

Thread also supports better decisionmaking

and provides assurance that

quality and safety standards will be met.

Essentially, the Golden Thread

streamlines the design and construction

process, giving all parties access to

crucial information that details the

requirements and building control

approval at Gateway Two, any changes

made during the construction phase

– in the change control plan – and

the evidence needed to support the

completion certificate application at

Gateway Three.

Effective and trusted risk management

relies on informed decision-making,

something that is ultimately made

possible by the Golden Thread of

Essentially, the Golden

Thread streamlines the

design and

construction process,

giving all parties

access to crucial

information

Information. Offering a real-time, easily

accessible and comprehensive record of

the riser shaft design and construction

history, this vital information helps

architects, contractors and property

developers identify potential risks and

weak points in the structure early –

minimising not only the safety risks but

also the need for costly rework.

Enhancing fire safety and fall

prevention

The recent Grenfell Tower inquiry didn’t

just lead to the tightening of regulations

and standards – it also highlighted the

importance of fire safety in HRBs and the

crucial role played by non-combustible

material. Giving all parties the ability

to access all required information

can ensure the specification of noncombustible

materials and the accurate

installation of such systems to help

prevent the spread of smoke and fire.

Additionally, with the Health and Safety

Executive (HSE) revealing that falls from

height were a leading cause of fatal

injuries in the construction industry,

early collaboration and the installation

of proven systems – such as RiserSafe

– will remove these risks and provide

assurance that contractors and other

workers are safe during construction.

By providing an extensive audit trail of

all actions taken, decisions made during

the design and construction phase,

and any materials used – such as noncombustible

riser flooring systems – the

Golden Thread helps building owners

and property developers demonstrate

compliance with building regulations

and the Building Safety Act, avoiding

any potential financial penalties and

streamlining the approval process

between Gateways Two and Three.

With riser shafts an integral part of

building design, having an easily

accessible and up-to-date flow of

information helps mitigate risks, protect

lives and assets, and ensure regulatory

compliance. As building complexity

continues to increase and regulations

tighten, integrating the Golden Thread

of Information into riser shaft design

and construction not only safeguards

buildings but also develops a culture of

safety that ensures long-term success.

www.ambar-kelly.com

52

52_SB0525.indd 2 23/04/2025 20:34

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FLOORS, WALLS &

CEILINGS

FIXING STRUCTURAL DAMAGE IN

HERITAGE BUILDINGS

John Heseltine, General Manager of the Helifix brand at Leviat, investigates the masonry

repair options available to engineers and specialist contractors in the heritage sector.

Our nation’s architectural heritage

needs preserving and we have a

responsibility to encourage the

retention and reuse of existing buildings.

When it comes to the repair of old

masonry and preventing structural issues

in listed or heritage structures, it’s crucial

that remediation work doesn’t alter the

appearance and structural function of

the building.

Repairing masonry, whether in heritage

or contemporary buildings, requires a

thorough understanding of the existing

construction’s form and condition.

Accurately diagnosing the causes of

structural defects is vital to ensure

appropriate repairs are made. Without

a proper assessment, repairs can be

ineffective or even damaging to the

original structure. In heritage buildings,

repeated repairs are particularly

undesirable due to the potential

cumulative impact on the building.

Maintaining structural integrity

Repair solutions should be designed

to maintain the visual appearance of

heritage buildings while effectively

addressing underlying structural issues.

Lightweight, high-grade stainless-steel

products provide strength and flexibility

without compromising the building’s

original appearance. Helifix remedial

solutions have been refined over 40

years, retaining the integrity of important

buildings while providing the necessary

structural support. The goal is always to

deliver repairs that are as unobtrusive

as possible, reinforcing the structure

without accelerating the deterioration of

original materials.

Repair methods for cracking and

movement

Historic masonry buildings often face

issues such as cracking or movement.

A combination of products can address

these problems, depending on the

specific needs of the building. This

may or may not include techniques

outside of the simple reinforcement of

the building superstructure. Common

methods include stitching cracks and

tying masonry façades back to the core

of the building. These interventions are

typically much less visually invasive than

traditional methods and tend to have

shorter project timelines. The aim is to

restore the structural integrity of the

building while minimising the impact on

its appearance and function.

Using lime mortars

Lime mortars are often preferred due

to their compatibility with older building

techniques and are ideal for re-pointing

and re-bedding of masonry wherever

possible. Unfortunately, the bond

strength and compressive strength of

‘genuine’ lime products does not allow

their use for many structural applications.

In these cases, discreet modern

materials avert concerns over the

changing passage of water leading to

freeze/thaw damage, while also avoiding

the creation of rigid sections that could

cause cracking.

Concealed products

One of the key advantages of modern

repair solutions is their ability to provide

structural support without being visible.

Using concealed repair products ensures

the aesthetic integrity of the heritage

building is preserved. This minimises

disruption to the original design while

still providing effective structural

reinforcement. Many of these repairs

have proven to last for decades, with

installations still effective 25 years after

their completion. These concealed repair

products are proven on many Grade

I listed buildings and other significant

structures across the world, providing

long-lasting, environmentally friendly

repairs.

Consult conservation professionals

Conservation professionals play a

crucial role in ensuring that masonry

repairs are compatible with a building’s

original construction techniques and

materials. They must assess each

building individually, taking into account

its historical context, materials and

construction methods. Leviat works

closely with conservation experts,

offering advice and sharing its expertise

to ensure that all repair methods and

materials are appropriate for the specific

needs of the structure. The company

also provides educational opportunities,

including a two-day residential course on

masonry survey and diagnosis.

The preservation and repair of heritage

buildings is a delicate process that

requires a combination of skill,

experience and thoughtful consideration.

Using modern, discreet repair solutions,

the structural integrity and aesthetic

value of these buildings can be

maintained.

www.leviat.com

54

54_SB0525.indd 2 23/04/2025 20:42

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Specify & Build Feature_template_IDML_v2.indd 2 25/04/2025 09:20


FLOORS, WALLS &

CEILINGS

RAISING THE BAR ON

PRODUCTIVITY, QUALITY AND

PERFORMANCE

EJOT UK’s Mark Newell explains why the latest additions

to its ETICS range are helping the EWI industry maintain

consistently high quality during installation for the longterm

benefit of specifiers and property occupiers and

streamline its supply chain.

The performance of an

external wall insulation (EWI)

system or external thermal

insulation composite system

(ETICS) will only ever be as

good as its component parts. A weak

link in the system build-up will not only

undermine its promise to improve the

thermal performance of a property, but

it could add complexity and hassle to

the installation process, resulting in

additional time costs for contractors.

Advanced fi xing solutions have a crucial

role to play, therefore, and EJOT has

off ered a range of innovative anchors –

tube-washer and screw combinations –

for many years. But anchors are just one

of the components which contribute to

the effi cient installation and performance

of the system. That’s why EJOT off ers

similarly innovative ancillary products,

such as fi xing components for safely and

securely mounting external elements

including handrail and downpipe

brackets onto the façade.

EJOT’s latest developments, however,

off er a holistic solution that could change

the way EWI components are sourced.

By extending the EJOT Pro-Line range of

profi les, EWI system providers can now

source their complete suite of fi xing and

attachment components from a single

supplier. That brings a host of benefi ts,

as a number of systems companies are

already realising.

Improving system performance

EJOT’s EWI solutions are designed to

optimise the performance of the EWI

system and ensure everyone in the

supply chain maximises the benefi ts of

using technically advanced products.

These benefi ts include reducing thermal

bridging – a common issue for wall

insulation systems which can also result

in dampness and mould growth on

internal surfaces.

Thermal bridges can occur in many

areas of the system’s construction,

with anchors and edge profi les being

particularly vulnerable points. This is

why EJOT’s R&D team has focused on

creating products that address these

risks, including through manufacturing

all our profi les in PVC rather than

aluminium, and the development of a

new patent-pending PVC base ‘high

load’ profi le. This features a hollow

chamber design to reduce thermal

transfer, while also off ering increased

rigidity.

In addition, our profi les enable precise

edge formation and help to permanently

drive rain away from the building.

Pro-Line profi les are also designed

to compensate for movement where

applicable, such as around doors and

windows, to prevent cracks developing

over time.

The Pro-Line range of profi les

complements EJOT’s established

anchoring products, including external

attachment components. These are

designed to allow planned external

EJOT’s profiles enable

precise edge formation

and help to

permanently drive rain

away from the building.

Pro-Line profiles are

also designed to

compensate for

movement where

applicable

56

56_SB0525.indd 6 22/04/2025 10:31


FLOORS, WALLS &

CEILINGS

attachments to be integrated within

the EWI system and enable external

elements to be retrofi tted as required,

without compromising system

performance.

The EJOT ETICS range is also supported

with an Environmental Product

Declaration (EPD) to provide quantifi ed

data on its environmental impacts. This

maximises transparency for specifi ers

and enables informed, whole lifecycle

management decisions to be made

when selecting systems for EWI or

ETICS projects.

Process optimisation and

streamlined supply chain

For ETICS / EWI system providers, EJOT

UK can eff ectively become a ‘one-stop

shop’, meaning they do not have to rely

on multiple suppliers, often with their

own payment terms and lead times. This

delivers operational benefi ts in terms of

the effi ciency of ordering, delivery and

invoicing processes, easing the pressure

on staff resources and reducing volumes

of paperwork and waste.

The process optimisation possible

through single-sourcing encompasses

other environmental advantages too.

For example, EJOT can deliver the

complete suite of EWI components and

profi les on a single vehicle in one journey,

reducing deliveries to site. This reduces

the impact of site operations in local

communities and helps to minimise the

carbon footprint of the EWI supply chain.

Helping installers achieve higher

quality

We also ensure installers are

comprehensively supported to work

more effi ciently and achieve better quality

consistency through a 360-degree

service. This involves EJOT technical

consultants providing on site services

covering the three product segments –

anchors, profi les and mounting elements

– to help installers achieve the optimum

results.

For ETICS anchors, we provide pullout

tests on-site and a digital product

confi gurator to assist at the specifi cation

stage. This also helps the deployment

of EJOT’s ETICS mounting elements,

with additional support provided for

pre-dimensioning, and for profi les, our

technical consultants carry out adhesive

tests on-site, helping installers get it right

fi rst time and deliver a quality installation

for clients.

www.ejot.co.uk

57

56_SB0525.indd 7 22/04/2025 10:34

FLOORS, WALLS &

CEILINGS

ETEX PREPARES FOR

GROWTH WITH

PLASTERBOARD EXPANSION

98%

of its portfolio of

boards produced in

the UK

Etex has expanded its plasterboard production facility in Bristol as it commits to UK

manufacturing. Specify & Build attended the facility’s official opening to find out more.

Visiting Etex’s plasterboard facility

in Bristol is a true lesson in scaling

up. The company has invested

£170 million in expanding its existing

production site, creating Etex’s most

efficient plasterboard line in Europe in

terms of size, speed and complexity.

In fact, the line is so long that the team

who designed and built it even had to

allow for the curvature of the Earth in

their calculations!

This is Etex’s largest production

investment ever, and a strong

commitment by the company to UK

manufacturing. The expanded facility,

which produces plasterboard for the

Siniat brand, allows the business to

produce more than 98% of its portfolio

of boards in the UK. By increasing local

Etex has gone the extra

mile during the

expansion, ensuring

that sustainability is an

integral part of the new

facility

production, Etex says it now has greater

flexibility and can ensure significant

carbon savings by decreasing the need

to transport boards from other countries.

John Sinfield, UK & Ireland Country

Manager, said: “This investment will give

our UK customers additional confidence

that we are ready for market recovery

and able respond to any increases in

demand, in line with wider Governmental

drives.”

A sustainable future

Etex has gone the extra mile during the

expansion, ensuring that sustainability

is an integral part of the new facility. The

new site is a zero-waste-to-landfill plant

and part of Etex’s strategic sustainability

roadmap which, in the UK, includes

rainwater harvesting and increasing the

recycled content of its products year-onyear.

Etex is the first UK manufacturer to

have recycled content certified in new

products (through SCS certification),

with recycled content in UK products

ranging from 23% up to 45% in new

plasterboards.

Preparing for growth

Speaking at the official opening, Etex

CEO Bernard Delvaux said that despite

the current challenges facing the

industry, he expects positive growth in

the future. “Building and construction

is expected to be flat across the EU

in 2025, before returning to growth in

2026,” he said. “We believe there is

a fundamental need for new housing

and that means it’s time to invest in our

capacity and to prepare for growth.”

John agreed, acknowledging the

challenges that the industry is currently

facing: “The UK government is talking

about construction being the engine of

growth and we have a responsibility to

be ready. We have a housing crisis in

the UK – the next generation is finding it

almost impossible to buy and we need

more homes.

“We also have a massive skills shortage,

an ageing workforce and a need for

greater emphasis on trades and skills,

otherwise there’ll be no-one to build

the homes and fit our products. What

specifiers want is certainty of installed

performance. They want test data and

evidence, which is why we’re investing

seven figures every year in testing to

support market demand.”

Etex operates more than 160 sites

across 45 countries and employs 13,500

people worldwide. Key brands include

Siniat, Promat, Reimagin, Superglass,

URSA, Eternit, Equitone and Cedral.

www.etexgroup.com/en-gb

58

58_SB0525.indd 2 23/04/2025 20:43

Ease of

installation

Minimal preparation

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Easy to cut

Lightweight

& durable

10 year

warranty

More than

70 designs

Easy maintenance

100% waterproof

Beautiful results in double quick

time, with no tiles and no grout!

Kinewall decorative bathroom wall panels –

Easy to install with minimal preparation work

Whether you are adding a shower or renovating a whole bathroom,

Kinewall is a quick and versatile solution. With a lightweight and easy

to cut and drill composition, on-site installation is a breeze.

What’s more, the Kinedo team works with you; from site visits, installation

training, technical assistance and first-class aftercare.

kinedo.co.uk/kinewall


FLOORS, WALLS &

CEILINGS

FABRIC-FIRST DESIGN KEY TO

THERMAL EFFICIENCY

Ciaran McAliskey, Specification Manager at Keystone Lintels, explains how a onepiece,

thermally-efficient lintel can significantly improve SAP ratings and eliminate

the need for costly renewable technologies as part of a fabric-first approach.

Set to become mandatory for all

new homes in 2025, the Future

Homes Standard (FHS) is an

opportunity to deliver much needed

energy efficient housing and stay

on track with our climate ambitions.

Making sure the envelope of a building

is as good as it can be is essential,

with attention to detailing and thermal

bridging eliminating some of the issues

that create poorly performing homes.

The revisions to Part L requirements

of the Building Regulations represent

progress towards the 2025 Future

Homes Standard but reaching these

goals requires a focused and upfront

effort on the design of a building’s

envelope. The June 2022 interim Part L

uplift to energy efficiency requirements

demanded 31% lower carbon

emissions from all new homes through

a combination of fabric improvements,

low-carbon heating and PV panels.

However, 2025 has spurred an even

bigger transformation for new housing,

with 75-80% emissions cuts mandated.

To achieve such dramatic cuts now

requires housebuilders to prioritise

thermally efficient building fabrics from

day one.

In 2025, optimising the thermal

performance of the building envelope

through intelligent design and a fabricfirst

approach is essential. Constructing

an airtight, well-insulated building fabric

that minimises heat loss will be key to

hitting energy and emissions targets and

achieving compliance, both for large

developments and individual houses.

Enhancing the building’s envelope

efficiency also provides occupants with

superior thermal comfort and air quality.

This creates more comfortable indoor

spaces which, in turn, can enhance

productivity, health and overall wellbeing.

Building as designed

A core element of the fabric-first

approach is addressing thermal

bridging, which can account for up

to 30% of a home’s heat loss if not

managed correctly. Eliminating thermal

bridging through intelligent design

and correct product specification will

be vital to meet these ambitious new

regulations. However, the industry

often fails to consistently build what

we design, using incorrect products or

detailing. Workmanship and site skills

can also cause issues, leading to a

performance gap between as-designed

and as-built building performance, with

weak spots significantly impacting heat

loss and overall fabric performance.

The Building Regulations Part L report

details the required materials that must

be installed without substitution, unless

the report is recreated or amended by

an energy assessor. Building control

can use this report as a checklist

and may ask for thermal elements to

be recalculated if you swap brands

or material types of different thermal

values. Part L now states the actual

thermal transmittance values are used

for building products within the building

envelope; in the past, generic accredited

construction detail values were accepted

within the SAP assessment. These

values could vary substantially from

the actual value of a specific product.

By making this change, the Y value

obtained is now accurately represented

within the report.

Photographic evidencing

One of the standout changes from Part

L helping to bridge the performance

gap, is the requirement for photographic

evidencing of key junctions at the

relevant construction stage for every new

dwelling. This will need to have geolocation

technology activated, and the

report will be provided to building control

and the building owner. Essentially there

will need to be proof that the dwelling

has been constructed from the same

materials it was designed from; ensuring

the property runs as efficiently as it

should.

High-performance lintels

Traditional steel lintels can create major

thermal bridges in homes due to steel’s

high thermal conductivity and typical

long spans. However, solutions such as

Hi-therm+ address this. By incorporating

a thermal break, Hi-therm+ is up to

five times more thermally efficient than

standard lintels; a cost-effective solution

that will save energy over a home’s

lifespan when the fabric is done right. A

recent enhancement to the Hi-therm+

Lintel is pre-fitted insulation with a higher

content of recycled materials, boosting

thermal efficiency even more. With up to

20% increase in performance, Hi-therm+

Lintels can improve overall junction Psi

values by up to 15%.

keystonelintels.com

60

60_SB0525.indd 2 23/04/2025 20:48


NEW LOWER CARBON ADHESIVES FOR FAÇADE

SYSTEMS

Alsecco has introduced a low-carbon basecoat for its

external wall insulation to support sustainable building

design. By switching to specially optimised cement that

uses 30% less carbon in the production process, Alsecco

has reduced the embodied CO 2

in its adhesive and

reinforcing compounds.

The highest levels of carbon within Alsecco adhesives

and compounds comes from the cement elements used in

the dry mortar. While the firing process for cement can be

carbon intensive, it is the reduction of the raw materials to

formulate the cement that generates further emissions. By

using lower clinker content, created with the raw materials,

the optimised cement produced uses less carbon. This

allows Alsecco to produce lower-carbon adhesives.

Alsecco is in the process of converting all of its Armatop

adhesives, as well as its laying mortar, and ceramic and

glass adhesive products.

The new low-carbon adhesives will come with green

labelling to highlight the reduced carbon content, supported

by data sheets featuring the latest technical information.

alsecco.co.uk/systems/external-wall-insulation

FLOORS, WALLS &

CEILINGS PRODUCTS

REMAGIN, PROMAT AND SINIAT JOIN FORCES TO

LAUNCH TESTED SOLUTION TO CONNECT SFS

INFILL WALLS TO FIRE PROTECTED STEELWORK

Etex has launched a third-party tested solution for securing

steel infill wall systems to fire protected structural beams,

to ensure the highest standards in protecting structural and

fire integrity in building facades.

Working with passive fire protection specialist Promat,

Remagin has undertaken comprehensive testing to

demonstrate mechanical performance where the SFS

interfaces with boarded structural steelwork. While it is vital

that structural steelwork is protected from the threat of

fire to maintain its structural integrity, it is also essential to

demonstrate that the fixings for items to that same steel will

be suitable for the ambient conditions.

Introducing board between SFS heads and steel beams

can cause additional rotational movement, increasing

bending moments on fixings and raising the risk of

fatigue under dynamic loads.To address this Remagin

conducted independent tests on various screw types and

configurations, gathering key data on failure loads and the

level of movement. This was followed by cyclic loading tests,

simulating real-world wind pressure on SFS infill wall panels.

The results provided critical insights into fixing

performance, allowing Remagin to develop a data-driven

approach to screw design and specification with each fixing

solution tailored to meet project-specific requirements to

ensure structural reliability.

www.promat.com/en-gb

SCREED HELPS REDUCE CARBON EMISSIONS

Gypsol screed has an advanced formulation, developed

to deliver highly effective underfloor heating. It has the

potential to provide better value for money from every

project, thanks to a smarter use of space and it has been

around for many years – yet it is only recently that it has

been recognised for its full potential.

Known as Gypsol Complete, it is unlike traditional

cement-based screeds that can act like miniature storage

heaters. This advanced formulation conducts heat up to

four times more efficiently than a cement screed, allowing

for lower flow temperatures and up to 25% energy

savings compared to more traditional radiator systems. This

translates to reduced operational costs for homeowners

and a smaller carbon footprint for the building. By

eliminating bulky radiators, the system frees up valuable

living space, potentially allowing for an extra home on a

development - maximising the return on investment and

offering an added selling point for buyers.

Moreover, Gypsol Complete delivers faster drying times

when compared to concrete. LKAB’s Gypsol screeds can

be forced dried in just seven days.

What’s more, it seamlessly integrates with renewable heat

sources such as air and ground source heat pumps, further

enhancing its Environmental Product Declaration (EPD)

credentials. Heat pumps extract renewable energy from the

environment, significantly reducing reliance on fossil fuels

and operating costs.

www.lkabminerals.com

61

61_SB0525.indd 3 23/04/2025 21:03


FLOORS, WALLS &

CEILINGS PRODUCTS

IT’S ALL ABOUT THE FLOORING FOR THE CFA…

The Contract Flooring Association (CFA) is the leading

independent professional voice of the contract flooring

industry and, this year, it is celebrating its 50 th anniversary.

Members of the Association include specialist fl ooring

contractors, manufacturers, distributors and consultants

both large and small, with the membership accounting for

a signifi cant proportion of the UK’s commercial flooring

market.

Most of the UK’s largest and most well-known

fl ooring companies are CFA members. This high level of

commitment gives the CFA a wealth of resources at its

fi ngertips. The objective of the CFA is to promote the highest

standards of professionalism, safety and training while,

at the same time, providing essential services and expert

information.

Flooring is a major element in most contracts and, with

more products to choose from than ever before, fi nding

the right installer has never been so important. Flooring

is diverse and technically demanding: each product type

has its own challenges and options in terms of installation

specifi cation. A quality contractor will know the correct

adhesive for the fl ooring product, or the right primer for the

subfl oor, and so will help maximise your investment and

minimise failures.

Architects, specifi ers and main contractors require

the quality of service, installation and support that CFA

members can provide. Consequently, many public and

private organisations and an increasing number of local

authorities are now specifying that CFA members must be

used. The CFA has a comprehensive vetting process and all

members adhere to the Contractors’ Code of Conduct.

Two new support documents available from the CFA

include ‘Beyond Installation-Guidance on Underfl oor

Heating’, which addresses the impact of proposed new

standards likely to dramatically change the landscape for

UFH when installed with textile, resilient and timber-based

fl oor coverings. The second is the ‘Guidance Note on

Moisture Measurement – In-Situ Probe Method’ to support

members with moisture testing on site.

www.cfa.org.uk

THROUGH-THE-WALL SYSTEM OPENS DOORS TO OFFSITE FOR HOUSEBUILDERS

A complete wall system from Saint-Gobain is making

construction solutions more accessible to small and

regional housebuilders and contractors. EnveoVent is the

fi rst complete through-the-wall solution available from a

single manufacturer.

The Modern Methods of Construction (MMC) framework

Category 2 panellised system is a fully tested, complete,

ventilated and insulated structural wall with a choice of

internal and external fi nishes, offering an alternative to

traditional masonry construction. The system offers one

warranty, one procurement route and one single point of

contact, while improving build speed and effi ciency. The

solution has been designed for the social housing market,

delivering speedier build schedules and warmer homes for

residents.

Saint-Gobain UK & Ireland CEO Mike Chaldecott said:

“We are incredibly proud to be launching a complete wall

solution that has been rigorously tested as a system to

deliver the required levels of fi re, acoustic and thermal

performance. EnveoVent demonstrates our commitment to

lightweight construction methods and our clear purpose to

make the world a better home.”

The EnveoVent solution has been piloted by Saint-Gobain

and TR Partnership Homes at a Midland Heart housing

association development of 12 social homes in Birmingham.

Comprising a more sustainable, closed panel timber

frame, the solution switches traditional masonry for timber,

which has been shown to cut embodied carbon emissions

by around 20%. The system also uses mineral wool

insulation manufactured from up to 65% recycled glass and

carries a U-value of 0.16 to 0.13W/m 2 K, depending on wall

thickness, which exceeds the 0.18W/m 2 K required by the

Future Homes Standard in 2025.

Complete fi re, thermal and acoustic performance

testing has been carried out on the EnveoVent system,

alongside fully detailed structural calculations. This meets

requirements of the Building Safety Act 2022 for a golden

thread of secure, easily accessible and accurate product

information.

bit.ly/EnveoVent

62

62_SB0525.indd 4 23/04/2025 21:05

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LANDSCAPING

USE THE URBAN LANDSCAPE TO MAKE

OUR PUBLIC SPACES SAFER

Steve Faye, Managing Director at security specialist, SAFECROWDS Group, discusses strategies for assessing

the terror risk in the public realm and integrating terrorism protection into urban planning and landscaping.

On 3 April 2025, Martyn’s Law

– the Terrorism (Protection of

Premises) Act: 2025) became

UK legislation following a long campaign.

The new law places a mandatory

obligation on those responsible for

qualifying premises with a capacity of

200 or more, or events with a capacity

of 800 or more, to take reasonable

precautions to prevent acts of terror and

protect people from the risk of harm

should the worst happen. Meanwhile,

‘vehicle as a weapon’ attacks in

Magdeburg and New Orleans over the

2024 festive period have reiterated once

again how vulnerable crowds can be to

such incidents.

In towns and cities across the UK,

the drive to encourage footfall means

that urban centres are evolving, with

pedestrianisation, markets, and the use

of town squares as event spaces all

creating environments where crowds

are likely to congregate. The challenge

for placemakers and urban designers

is to integrate hostile vehicle mitigation

(HVM) and security measures into urban

centres, while retaining uniqueness and

a welcoming aesthetic.

What is HVM?

HVM are barriers or bollards that have

been tested to withstand a vehicle

impact to protect pedestrians. HVM

systems are rated in line with test criteria

that certifies their performance according

to the size, speed and trajectory of

the impacting vehicle, and they can

be temporary (surface mounted) or

permanently installed with foundations.

Some permanent solutions enable the

bollard or barrier section to be removed

to enable access or allow deployment

only on an as-needed basis.

While many events held in public

locations are now protected using

temporary HVM, there is a growing trend

towards integrating permanent HVM

into the public realm. When specified

as part of a landscaping project, this

provides an opportunity to protect

people, while seamlessly integrating

HVM into the public realm in a way

that is both operationally considered

and aesthetically appropriate. Investing

in permanent HVM as part of urban

realm planning and design ensures that

protection is always in place, which can

be more cost-effective over the long

term than hiring temporary HVM each

time risk needs to be mitigated.

Risk assessment and early

engagement

If there is even a possibility that HVM

might be a requirement for a public

realm regeneration or landscaping

project, now or in the future, early

engagement with a specialist that

can deliver a Threat, Vulnerability and

Risk Assessment (TVRA) and Vehicle

Dynamics Assessment (VDA) and advise

on suitable solutions is essential. It is

much easier and more cost-effective

to integrate HVM into the urban

environment as part of a public realm

and landscaping strategy than it is to

retrofit it into existing road layouts and

public spaces.

A TVRA considers the potential threats

to any event spaces or pedestrianised

areas, including pavement seating areas

and outdoor dining, along with the

vulnerability of those areas to different

types of attack or vehicle incursions.

Although the purpose of HVM is to

prevent a vehicle attack, it’s important

that other threats and vulnerabilities,

such as marauding attacks or knife

attacks, are also considered as part of

the risk assessment. Terrorists often use

a vehicle as a first weapon or means of

access; HVM will provide time for the

alarm to be raised and for people to take

evasive action; but it will not remove

the threat. Consequently, as well as

considering which locations need to be

protected from hostile vehicle attacks

and how, the TVRA should consider

means of escape and safe haven

options for pedestrians too.

64


organic approach to integrating risk

mitigation with design can often offset

the cost of carrying out a TVRA and VDA

by reducing the amount of HVM required

and opening up creative approaches to

active travel strategies, directing footfall

towards local businesses and creating

a town centre layout that works for how

people use the public realm now.

LANDSCAPING

Carried out as an integral part of the

TVRA, the VDA considers the road

layout and topography to assess the

potential size, speed, and trajectory of

attacking vehicles driven towards the

area that needs to be protected. So, for

example, if the road leading to a market

square is narrow and bendy, the risk is

reduced because a larger vehicle will not

be able to use the route and no vehicle

will be able to gather speed. Conversely,

if there is a wide, straight road on an

incline leading to the vulnerable location

and a vehicle can gather speed as it

moves downhill, the risk is significantly

increased.

Specification should always be aligned

to risk. By determining risk early in the

design and planning process, there may

even be scope to alter road layouts, add

traffic calming, introduce landscaping

features, or create pedestrianised zones

that could mitigate risk. This way, HVM

becomes part of a wider, more holistic

landscaping strategy, supporting urban

design inspired by public safety. This

By considering risk more holistically,

public realm projects can also

boost criminality deterrence, with

improved lighting, CCTV, and reduced

opportunities for hostile reconnaissance

all included in a robust TVRA and

counter terrorism consultancy process.

More than bollards

Where HVM is required, it’s important

to understand that there is no one-sizefits-all

approach. While bollards may

sometimes be the preferred choice, there

is a huge array of aesthetic and practical

choices. The rated protection can be

disguised as all kinds of design features;

from street furniture and planters,

through to cycle racks and public art.

HVM could even be integrated as

wayfinding signage, combining rated

protection with a map of the area and

safety information. Where there are

heritage or local planning considerations,

these can also be incorporated into

the design, with shrouds disguising the

HVM made from timber, local stone or

powder-coated to complement ironwork

features.

www.safecrowdsgroup.co.uk

PERMEATE DELIVERS ONE-STOP-SHOP FOR

ROOF TERRACE LANDSCAPING PLANTER

SCHEMES

Specifiers looking to create attractive, highly functional

architectural landscaping elements on roof terraces can

now source the complete system, from sub-structure

through to planters/seating, thanks to a collaboration

between two industry leaders.

Wallbarn has joined with Bespoke Metal Planters to

develop Permeate, a versatile and fully integrated system

encompassing all the elements required to deliver strong

and long-lasting paved or decked spaces with seating and

planters.

At the heart of Permeate is Wallbarn’s robust subfloor

system creating a seamless, load-bearing base

constructed from non-combustible Class A fire-rated

components designed and engineered for strength,

adjustability and efficient drainage. This foundation

supports surface finishes including Wallbarn’s premium

fire-rated decking and paving options, while Bespoke Metal

Planters provides bespoke planters and seating elements

to complete any design.

“Permeate combines the strength of Wallbarn’s MetalPad

Ex pedestals, aluminium joists and Exadeck ceramic

decking boards with strong metal support trays which

hold Bespoke Metal Planter’s planter systems and tropical

hardwood timber benches,” said Wallbarn Director Julian

Thurbin. “This creates an exceptionally strong, flexible,

durable and aesthetically refined solution for urban spaces,

roof terraces and podium decks for domestic, commercial

and public developments.”

Permeate is available in finishes from hot dipped

galvanised steel to powder coated aluminium and Cor-Ten

steel. Different depths of planter panels are also available.

www.wallbarn.com

65


CASE STUDIES

CONTINUOUS FLOW WATER HEATERS REDUCES RUNNING COSTS BY 200 %

Runcorn-based heating engineer Dave Winrow was asked

by Margaret McNeil of Bridgewater Property Management

to come up with an energy efficient solution for Bridgewater

House’s heating and hot water as she was alarmed by ever

rising fuel bills.

The property was built in 1771 and is a classic two-and-ahalf

storey Georgian house with a basement, near the lower

end of a line of 10 locks leading from the Runcorn basin of

the Bridgewater Canal to the River Mersey.

The old system comprised two combis and two boilers.

Dave said: “The archaic boiler system, although very

dilapidated, was still working but as it was 10 years old or

more it definitely needed replacing with a system that would

be easier on running costs.”

Following a conversation with hot water heater

manufacturer Rinnai, Winrow decided to install three Rinnai

continuous flow water heaters, complete with extended

warranties. The system uses its controls to alternate the

firing sequence of the water heater and optimise gas

usages.

Dave continued: “The fully modulating 58kW unit gives

constant hot water and is a prime example of a modulated

unit at its best, as the unit’s 58kW capability can modulate

down to 4.4kW. It is very clever because it knows exactly

how much gas to use to heat the water due to its multisolenoid

burner, so it saves fuel and money. With other

water heaters they are either full on or off. Ms McNeil has

seen her heating and water bills tumble by 200% since

the installation.”

www.rinnaiuk.com

GLIDEVALE PROTECT’S WHOLE HOUSE SOLUTION PUTS EVERYTHING

UNDER ONE ROOF

Glidevale Protect has launched its Whole House Solution

– an interactive web-based specification tool offering

specifiers seamless navigation of its building envelope

product collection, ranging from pitched roofing underlays

and construction membranes to loft hatches and

building ventilation. The new resource, available at www.

glidevaleprotect.com/wholehouse, has been designed to

make it easier than ever to see how Glidevale Protect’s

extensive product range can be used on real-life homes.

Offering one of the widest ranges of construction

membranes on the market, Glidevale Protect’s portfolio

is suitable for various construction types including timber

frame, SIPs, CLT, and steel frame construction. It includes

external and internal, reflective and non-reflective breather

wall membranes including fire-rated options. Its airtightness

solutions, which include air and vapour control layers

(AVCLs), can enhance the thermal performance of walls,

ceilings, and floors, particularly when used as part of a

system with an external wall reflective membrane.

Glidevale Protect’s portfolio covers pitched roofing

underlays for cold and warm roofs, and a range of roofing

ventilation and accessories. When installed correctly, these

products work together to ensure adequate roof space

ventilation in accordance with BS 5250, allowing the roof to

breathe and minimising the risk of condensation.

Its roofing underlays include air and vapour impermeable

(type HR), vapour permeable and airtight (type LR) and air

and vapour permeable (type LR) underlays – all providing a

second line of defence against wind-driven rain and snow.

Glidevale Protect’s high and low-level roofing ventilation

solutions include dry fix ridge and hip ventilation, as well as

slate and tile vents with more than 450 tile profiles covering

the majority of tile and slate pitched roofs, while its eaves

and abutment vents offer effective low level ventilation

solutions.

The collection also includes airbricks, ventilation for walls

and windows, and underfloor ventilation; cavity trays; and loft

hatches.

www.glidevaleprotect.com/wholehouse

66

66_SB0525.indd 4 23/04/2025 09:42

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