BUFR Design Guide - IKO

CI/SfB (47) Ln2 

February 2012 

FLAT ROOFING DESIGN GUIDE 

Reinforced bitumen membrane systems 

engineered for a modern world

“Most polymer-modified and/or polyester 

reinforced bitumen sheets are expected to 

have a service life in excess of 50 years.” 

BS 8747, Section 4.9.6, Durability

REINFORCED BITUMEN MEMBRANE SYSTEMS ENGINEERED FOR A MODERN WORLD 3 

Contents 

Page 

Contents 

4-5 The IKO Complete Waterproof Roof 

6-9 Design Considerations 

10-11 Typical Details 

12-13 What is prevENt Graphite Technology? 

14-15 The Ultra prevENt Range 

16-17 Mach One Single Layer System 

18-19 Safestick Self-Adhesive System 

20-21 Other System Membranes 

23 Enertherm Thermal Insulation 

24-27 System Accessories 

28-29 Sustainable Roof Engineering/IKO Solar 

30-31 IKO Green/IKO Carrara 

32-37 IKO Circle of Service 

38-39 Experience Timeline 

Technical hotline: 0844 412 7207 www.ikogroup.co.uk

4 REINFORCED BITUMEN MEMBRANE SYSTEMS ENGINEERED FOR A MODERN WORLD 

The IKO complete waterproof roof 

Fire performance 

Thermal performance 

Environmental performance 

✔ 

✔ 

✔ 

Evolved to offer the ultimate combination 

of proven products, speed of application 

and safe installation practices on site. 

See page 14. 

Waterproofing performance ✔ 

Revolutionary cold-applied, single 

layer roofing system, renowned for 

its outstanding robust qualities. 

See page 16. 

Lightweight, fire resistant, rigid PIR foam 

core, with high compressive strength and 

dimensional stability. The highly efficient 

closed cell structure has a low thermal 

conductivity and easily achieves required 

U-values with a minimum thickness. 

See page 23. 

superlite 

A range of high quality triple glazed UV 

protected thermoformed polycarbonate 

domes and multicell white PVCu upstands. 

See page 26. 

A wind-resistant demarcation system for flat rooftops. 

Applications may be for the purpose of preventing 

access to hazards during regular rooftop maintenance 

or to provide safe access across the roof. See page 28. 

Technical hotline: 0844 412 7207 

www.ikogroup.co.uk


Integrated, flexible, lightweight and durable 

photovoltaic waterproofing sheets with high 

performance in low light areas. See page 29. 

A totally cold-applied, high performance 

built-up flat roofing system. This SBS 

modified self-adhesive system combines the 

revolutionary prevENt graphite technology 

with the very latest tackifier chemistry to 

provide unrivalled security and peace of mind. 

See page 18. 

IKOrail 

Guardrail 

System 

Freestanding collective fall 

protection systems. See page 26. 

An innovative, ecological roofing membrane, 

combining all known technologies for the 

improvement of the environment. Under the 

influence of UV rays, the membrane acts as a 

catalyst and converts nitrogen oxides and sulphur 

oxides into harmless and environmentally-neutral 

substances. See page 31. 

Innovative green roofing systems prolong the 

life of the roof, deliver better thermal values 

to help reduce energy consumption, reduce 

superfluous water run-off by absorbing and 

retaining rainwater, improves air quality and 

create an attractive extra urban green space. 

See page 30. 



Design considerations 

The Specification of Roofs 

The specification and design process is critical 

to be sure of long term, good quality roof 

protection that meets the requirements of 

building regulations. A roof performance is 

dependent upon material specification, 

correct design detailing and installation by 

fully trained operatives, followed up with 

regular inspection and maintenance. 

Your roof is one of your most valuable assets 

and it is therefore important to be confident 

that you have made the right choice from the 

very start. 

IKO take great care in providing services and 

products that offer clients and specifiers 

effective and positive solutions to meet 

guidelines set in CDM regulations 

(Construction Design Management), Codes 

of Practice set by British Standards, Building 

Regulations, including Part L, Government 

Guidelines and BREEAM (British Research 

Establishment Environmental Assessment 

Method). 

IKO offer an extensive consultation service 

regarding design, specification and material 

selection. This service is delivered via a 

national team of regional design specialists 

and head office based technical services. 

General 

The roofing system design should generally 

take into account the following factors: 

• Geographical location of the building 

• Degree of exposure (wind etc) 

• Roof deck/structural support 

• Pitch (angle of slope) 

• Intended usage (e.g. roof garden, 

walkway etc.) 

• Roof falls and drainage 

• Thermal performance (condensation) 

• Fire performance 

• Construction fabric (flammable or 

fragile etc.) 

• Perimeter detailing aspects 

• Roof penetrations (rooflights etc.) 

• Roof mounted plant and equipment 

• Building occupancy levels and type of 

occupancy (during the works) 

• Roof access arrangements (during work) 

• Roof access arrangements (maintenance). 

Further information on roof design can be 

found on www.ikogroup.co.uk and 

experienced IKO technical personnel are 

available to give specific project design 

advice, Tel: 0844 412 7207. 

Roof decks 

Structural decks provide the primary support 

for the roofing system. They must resist dead, 

live and wind loads, including storms. They 

must also be suitable for the proposed 

membrane roofing system, and the 

subsequent use that the roof has been 

designed for. Relevant structural and loading 

codes for each material must be followed, 

and current Building Regulations 

requirements checked and observed. If the 

use of an existing roof is to be changed (e.g. 

retrofit roof garden or pedestrian roof patio 

area), the suitability of the deck and the 

supporting structure must be confirmed. 

The deck may also be laid or fixed so as to 

provide a suitable fall for drainage of the roof 

surface, as required in BS 6229: 2003, Code 

of Practice for flat roofs with continuously 

supported coverings. However, roof falls can 

also be provided by the addition of tapered 

insulation as part of the roofing contract. 

Slate surfaced cap sheet 

Slate surfaced cap sheet 

Sanded underlay 

Slabs or ballast 

Slate surfaced 

cap sheet 

Sanded underlay 

Sanded 

underlay 

Insulation 

Filter layer 

Vapour control 

layer 

Insulation 

Deck 

Roof void 

Primed concrete deck 

Vented roof void 

Venting layer 

Insulation 

Ceiling 

Warm Roof: Where the insulation is immediately below the 

waterproofing membrane and above the vapour control layer 

which is bonded to the supporting deck. This is the most 

practical configuration for ensuring the control of 

condensation and is usually the recommended option for 

insulated roof design. 

In a warm roof configuration, a metal lined bituminous 

vapour control layer is recommended to achieve the highest 

performance standards, and is a requirement over high 

humidity environments (e.g. swimming pools). It is essential 

that the VCL is properly attached to the substrate and all 

side and end laps are fully sealed. 

Technical hotline: 0844 412 7207 www.ikogroup.co.uk 

Inverted Roof: Where extruded polystyrene insulation is 

placed above the waterproofing layer and loaded with 

ballast, paving slabs or roof garden finishes. This is a 

satisfactory roof design, particularly where a roof finish will 

receive pedestrian or other traffic. However, greater 

thickness of insulation is needed to allow for the cooling 

affect of water draining beneath insulation, and the 

supporting structure must be designed to accommodate the 

additional loading required for the insulation. 

An inverted roof needs no additional vapour control layer, as 

the waterproofing also performs the function of the VCL. 

Cold Roof: Where insulation is placed within a ventilated 

void space below the roof deck and above the internal 

ceiling. This form of roof design is no longer recommended, 

as proper void ventilation and an effective vapour control 

layer at ceiling level is difficult to achieve. In addition to the 

above, other hybrid roofs are sometimes used with insulation 

placed both above the deck and within an internal roof void 

(below the deck). The use of this type of roof design can 

result in serious condensation problems and careful 

calculation to balance the insulation thickness above and 

below the deck is needed to achieve success. Depending on 

the internal humidity conditions, this balance of insulation 

can sometimes not be achieved, and under those 

circumstances this type of hybrid roof is not recommended. 

Composite insulated decking panels are also available but 

these must be installed strictly in accordance with the 

relevant manufacturer’s instructions and the use of these 

items over high humidity areas will often be restricted.


The most common types of flat roof 

structural deck are: 

• In-situ concrete decks 

• Pre-cast concrete decks 

• Timber-based panels 

• Plywood decks 

• Oriented strand board (OSB types 3 or 4 

only) 

• Woodwool decks (no longer manufactured 

but may be present on existing structures) 

• Profiled metal decking 

• Composite insulated panels. 

Roof designers of refurbishment projects 

should also still be aware of strawboard 

(Stramit) decking, used widely in the 1950s 

and 1960s. Strawboard was a combined 

decking and insulation material, comprising 

compressed straw with brown paper facings. 

The product loses all structural integrity if 

wetted and removal of bonded membranes 

will destroy the upper face, and hence 

destroy the structural strength. The only 

course of action is to strip and replace 

strawboard with a suitable durable timber 

panel deck. 

In addition to the above, any type of wood 

chipboard is unsuitable for flat roofing, and is 

not recommended under roofing Codes of 

Practice. 

Design of falls 

It is generally accepted as good practice for 

flat roofs to be designed to clear surface 

water. Flat roofs should be constructed to a 

minimum finished fall of 1 in 80. To achieve 

this, the designer needs to adopt a design fall 

which will allow for deflections and 

inaccuracies in construction. BS 6229; 2003 

recommends 1 in 40 as the design fall, to 

ensure a finished fall of at least 1 in 80. 

An alternative approach is to choose an 

intermediate figure of 1 in 60, which is 

usually sufficient. The design of falls and 

drainage patterns will have a considerable 

influence on the depth of the total roof 

construction or roof zone, which should be a 

fundamental consideration at the very earliest 

stages of conception of a building. It is only 

after assessing the depth of roof zone that 

the designer can decide the levels of all other 

aspects of construction above the level of the 

flat roof (e.g. wall DPCs, window/door 

abutments etc). 

Falls may be formed in the structure or can 

be created within the roofing system above 

the deck. Falls in the structure can be 

achieved by adjusting the height of 

supporting beams or purlins, by using tapered 

supports, or by the addition of firring pieces 

before the deck is laid. The latter method is 

normally used with decks such as woodwool, 

timber, pre-cast concrete and metal decking. 

In the case of an in-situ cast concrete slab, 

falls are normally provided by using a 

separate screed. 

Preformed tapered insulation boards also 

provide a useful method of forming falls on a 

level roof deck. IKO is able to design and 

supply suitable tapered insulation systems. 

These provide both insulation and falls and 

are of particular importance for re-roofing 

existing roofs, many of which do not have 

sufficient falls and probably do not have 

sufficient insulation. 

Tapered insulation can provide falls in one 

direction to a gutter or level valley, or in two 

directions to form falls and cross falls. In 

some circumstances it may be deemed 

necessary to control the rate of water run-off 

from flat roofs and paved areas so as to avoid 

overloading ground drainage. Where this is a 

requirement, consideration should be given to 

using green roofs or roof top gardens where 

the horticultural finishes can be used to 

absorb rainfall and release it into surface 

water drainage more slowly. However, it is 

still important to make the correct provision 

for adequate drainage, even with garden 

roofs, to avoid water-logging the growing 

medium or overloading the structure. 

Roof drainage 

Flat roofs may be drained by two basic 

methods: towards the outer edges and into 

external gutters, or towards internal gutters 

or outlets within the main roof area. Straight 

falls to external gutters are simple to form by 

sloping the roof deck with firrings, by 

screeding or by using tapered insulation 

boards. Internal drainage will be achieved by 

straight falls to gutters or a pattern of falls 

and cross falls to outlets. 



Control of condensation/thermal design 

When designing a roof the potential for 

condensation must always be considered. 

Any provision required to control 

condensation should be determined as 

recommended in BS 6229, 2003 but with the 

calculation method modified to conform to 

BS 5250, Code of Practice for control of 

condensation in buildings. 

Suitable thermal insulation should be included 

within the system. This layer must have 

sufficient insulation value for its underside to 

remain above the temperature at which 

condensation can start, even in the coldest 

design conditions. The provision of insulation 

alone, however, may not be sufficient to 

prevent condensation. If the insulation is 

permeable to water vapour, the vapour will 

pass upwards through it and condense on the 

underside of the waterproof membrane. To 

prevent this occurring, a vapour control layer 

should be provided directly below the 

insulating layer. The IKO Technical Services 

Department can undertake calculations to 

ensure the optimum thermal performance of 

a roof is achieved. 

The thermal design of a flat roof can be 

categorised as three primary types of 

construction, depending on the type and 

location of the insulation layer, as opposite. 

Insulation 

The statutory requirements for the thermal 

performance of buildings are set out in the 

Building Regulations Part L (2010 Edition). 

The new Part L is published in four sections: 

L1A: New dwellings 

L1B: Existing dwellings 

L2A: New buildings other than dwellings 

L2B: Work in existing buildings other than 

dwellings. 

IKO supply a comprehensive range of totally 

CFC/HCFC free rigid thermal insulation 

boards suitable for use with IKO flat roofing 

systems. IKO insulation materials come in a 

range of uniform thickness or in tapered 

form, to suit individual circumstances and U- 

value requirements (see page 22). 

Condensation Risk Analysis (no account taken of thermal bridges) 

Internal / External Conditions : 20.0°C @ 50.0%RH / 5.0°C @ 95.0%RH Buildup period 60 days 

Interface Dewpoint Vapour Saturated Winter Annual Conden- 

Temp. Temp. Pressure V.P. Buildup Buildup sation 

ºC ºC (kPa) (kPa) (g/m²) (g/m²) 

1 Outside surface resistance 

5.2 4.3 0.83 0.88 - 

- No 

2 2 layers of felt 

5.4 5.1 0.88 0.89 - 

- No 

3 Rubervent Type 3G 

5.4 5.4 0.90 0.90 0 

-3 Yes 

4 90mm thick Ennertherm PIR 

18.1 5.4 0.90 2.08 - 

- No 

5 Ruberfoil Vapour Control Layer 

18.2 9.2 1.17 2.09 - 

- No 

6 Concrete deck 

18.7 9.3 1.17 2.16 - 

- No 

7 Cavity >24mm, roof 

19.4 9.3 1.17 2.25 - 

- No 

8 Plaster, lightweight 

19.6 9.3 1.17 2.28 - 

- No 

9 Inside surface resistance 

Scale 1:3 

25°C 

2 

3 

7 

8 

Internal 

50.0%RH 

20°C 15°C 10°C 

Page 2 of 2 

JPA Designer Version 3.03i7 14/12/05 

Licensed to Ruberoid Building Products Limited 

J:\Technical\JPA Files\akersJPA\Brockworth Primary School.JDP Linsay Martin 

4 

6 

5 

Temperature 

Dewpoint 

Outside 

Rso=0.04 

External 

Inside 

95.0%RH 

Rsi=0.10 

5°C 0°C -5°C 

A typical condensation risk analysis report 

© JPA Technical Literature Nov 2007 

IKO can provide bespoke tapered insulation designs 


www.ikogroup.co.uk


Health and Safety 

Health and Safety data sheets relating to all 

IKO materials are available from the Technical 

Services Department on 0844 412 7207 or as 

a download from www.ikogroup.co.uk. 

Routine maintenance 

As with all roofing systems, proper 

maintenance is essential to obtain maximum 

performance and ensure the longest life 

expectancy for the system as a whole. It is 

also an integral part of all manufacturers’ 

guarantees. Any deficiencies should be 

reported immediately to IKO. 

Access to the roof must only be allowed by 

arrangement with and under supervision of 

the Building Manager or the person 

responsible for building maintenance, in 

accordance with the Construction (Design & 

Management) Regulations 2007. 

All personnel given permission to access the 

roof must be fully advised of the health and 

safety procedures required by the site or that 

of the individual roof concerned. The client or 

building owner is responsible for providing 

safe access to and from the roof, and for 

suitable edge protection or fall arrest systems. 

Routine inspections 

Regardless of the manufacturer concerned, all 

flat roofs should be inspected twice yearly, 

preferably in the spring and autumn, and/or 

after extremes of weather conditions. 

Inspections should be carried out generally in 

accordance with BS 6229: 2003, with 

particular attention to the following items: 

• It is important to check that roof outlets are 

functioning and gratings are not blocked. 

Remove debris from the roof but do not 

flush silt or dead leaves down outlets. In 

areas where taller trees are adjacent to the 

roof, inspections may be required more 

frequently 

• Note the general condition of the 

membrane finishes and report any signs of 

creasing/blistering, de-bonded laps or 

damaged areas immediately 

• Check perimeter details and upstands, 

ensuring that metal cappings, flashings, 

edge trims and mortar pointing to chase 

details are secure 

• Check waterproofing to rooflight kerbs 

• Check rooflight domes for signs of damage 

or deflection 

• Check flashings to expansion joints and that 

cappings are secure 

• Check upstand flashings to plant support 

legs/upstands 

• Check upstands and flashings to pipe 

penetrations 

• Examine all mastic seals and repair/replace 

as necessary 

• Check walkways and around access points 

to ensure damage/displacement has not 

occurred to walkway or concrete paving. 

Repair work 

Roofs which are under guarantee by IKO 

should only be repaired by the installing 

contractor, with full design reference to IKO 

Technical Services Department. 

Where the roof is not covered by a 

guarantee, Clause 10.3 of BS 8217: 2005, 

‘Repair procedures’ should be applied. 

Some additional reference information 

British/European Standards 

BS 8747: 2007, Reinforced bitumen 

membranes (RBMs) for roofing. Guide to 

selection and specification 

BS 6229: 2003, Code of Practice for flat roofs 

with continuously supported coverings 

BS 8217: 2005, Reinforced bitumen 

membranes for roofing 

BS EN 12056: 2000, Gravity drainage systems 

inside buildings. Sanitary pipework, layout 

and calculation 

BS 5250, Code of Practice for control of 

condensation in buildings 

BS 8000 Part 4: 1989, Workmanship on 

building sites. Code of Practice for 

waterproofing 

BS 476 Part 3: 2004, Fire tests on building 

materials and structures. Classification and 

method of test for external fire exposure 

to roofs 

Building Regulations 

www.planningportal.gov.uk/england/ 

professionals/en/ 

Approved Document A 2004 - Structure 

Approved Document B - Volumes 1 and 2 

(2006 Edition) - Fire Safety 

Approved Document C 2004 - Resistance to 

Contaminants and Moisture 

Approved Document H 2000 (2002 

amendment) - Drainage and Waste Disposal 

Approved Document L1 and L2 2000 (2010 

amendment) - Conservation of Fuel and 

Power 

Websites 

IKO PLC Roofing Specification Division 

www.ikogroup.co.uk 

National Federation of Roofing Contractors - 

www.nfrc.co.uk 

British Board of Agrément - 

www.bbacerts.co.uk 

Building Research Establishment - 

www.bre.co.uk 

Loss Prevention Certification Board 

(Red Book) - 

www.redbooklive.com 



Typical details 

These pages show a selection of typical detail drawings. For a full range contact Technical Services or visit www.ikogroup.co.uk. 

Insulated upstand 

DPC 

IKOflash 

Timber check kerb 

IKO underlay 

IKO cap sheet 

Wedge 

IKO approved 

insulation 

150mm min. 



Vapour control layer 

IKO approved insulation 


Insulated gutter 



Upstand (inverted roof) 

DPC 


IKO 

approved insulation 

Wedge 

75mm min 


150mm min 

20-40mm round washed aggregate 

to a minimum depth of 50mm 

Geotextile filter layer 

IKO approved insulation 



Welted drip 




insulation 



www.ikogroup.co.uk

} 


Rainwater outlet 

Rooflight 

Rainwater outlet 


Timber former 

IKO capsheet 


Build up as main 

roof specification 


insulation Clamping ring 

150mm min. 




Refurbishment 

rainwater outlet 


insulation 

300mm min 


Existing rainwater 

outlet/pipework 


Pipe detail 

C pipe L 

Vertical cladding detail 

Pipe detail 

50mmLead 

150mm min. 

150mm min 


Pipe Pipe 

Lead dressed into 

Metal the pipework sleeve 


IKO capsheet 

Code 4 lead cloak/sleeve fabricated 

Pipe 

on 

flashing 

site by a leadworker/plumber 

IKO being capprimed sheet and bonded between 

the underlayer and the detailing cap shee 



75mm min. 

150mm min. 

Vertical cladding 




insulation 


insulation 

Option 1 Option 

Vapour 

2 

control layer 




What is prevENt graphite technology? 

IKO’s Ultra prevENt systems utilise graphite technology, which 

provides the highest fire performance without affecting the primary 

waterproofing function or life expectancy of the membranes. 

How it is made 

The upper surface of the membrane base 

carrier (excluding the overlap area) is coated 

with expandable graphite crystals (this 

accounts for only 1% of the total weight of 

the membrane and does not affect the 

waterproofing capability of the membrane 

construction). All types and weights of 

polyester base fabric, including all prevENt 

capsheets can be provided with this fire 

resistant technology. 

How it works 

Expandable graphite is naturally occurring; it 

is very environmentally friendly, it is insoluble 

in water, and it functions as a flame retardant 

by endothermic combustion reaction when in 

contact with heat. In a fire the graphite 

expands, drawing heat out of the combustion 

process and creating a heat-insulating layer 

after expansion. The typical intumescent 

effect forms a barrier against flames and 

stops the dripping of the coating from the 

underside of the roofing, and also acts as an 

effective smoke suppressant. 

Base carrier coated with expandable graphite 

crystals, prior to the application of SBS coating 

bitumen 

When exposed to heat the graphite expands 

through the coating forming a heat shield 

Ultra prevENt and Goldseal 

Certificate No. 91/2671 

Mach One 

Certificate No. 00/3760 

Certificate No. 626a 


www.ikogroup.co.uk


“The specifier, installing contractor and 

building owner can be assured of the 

best all round waterproofing and fire 

performance protection.” 

Features and benefits 

Very low smoke production 

Smoke effects cause more casualties than the 

effects of the fire itself. The expandable 

graphite functions as a very efficient built-in 

smoke suppressant, with better results than 

any other known bituminous fire-retardant 

system. 

No toxic gas release 

Carbon monoxide is a major toxic element in 

smoke development. In the event of fire, 

prevENt membranes produce a very low 

percentage of carbon monoxide. 

Halogen-free technology 

prevENt fire performance technology is also 

halogen-free, therefore no toxic fumes from 

halogenated compounds are produced during 

application or in the event of a fire. This 

performance provides significant advantages 

over synthetic membranes, which rely on 

toxic halogenated compounds to achieve any 

fire performance characteristics. 

Reduces the dripping of the burning coating 

The intumescent effect of the expandable 

graphite reduces the dripping of molten 

bituminous coating along the membrane. 

Reduces heat release 

The less heat that is released, the less the 

chance of a fast spreading fire, and the more 

time available for evacuation. prevENt 

membranes act as a very efficient fire 

retardant. The rate of heat release is half that 

of a standard polyester membrane and it has 

considerably better results than all known 

alternative fire retardant systems. 

Maintains primary waterproofing function 

The waterproofing integrity and life 

expectancy of the roofing membranes remain 

completely unaffected as the polyester bases 

and coatings remain completely unaltered in 

fire-resistant form. 

Highest UK and European testing standards 

prevENt membranes have been tested to the 

most stringent European standards, and have 

achieved the highest performance ratings in 

all sections of fire tests EN 1187: 1, 2, 3 and 

4 (BS 476: Part 3: 2004). 

Optimum safety in the event of fire, 

for man and the environment 

prevENt membranes are not just another 

solution designed to meet the standards of 

fire test resistance. The prevENt range is 

above all a “safe” concept which significantly 

improves the safety of people during the 

evacuation of a building in the event of a fire, 

without releasing harmful smoke or toxic 

fumes into the environment. 

High performance and fire safety as standard 

All IKO prevENt membranes (including Mach 

One) incorporate graphite technology, meet 

LPCB requirements, yet still offer the highest 

level of waterproofing and life expectancy 

performance. 


www.ikogroup.co.uk


The Ultra prevENt range 

All Ultra prevENt bituminous systems offer the latest generation of 

high performance, elastomeric reinforced bitumen roofing 

membranes, developed and manufactured by IKO. These systems 

provide significant improvements over conventional polyester-based 

roofing membranes. Ultra prevENt membranes have enhanced 

polyester/glass fibre, dual-laminate base fabrics, for added strength 

and dimensional stability. 

In addition, the base fabric is treated with the prevENt graphite 

technology, to achieve the highest fire performance standards. A 

high content SBS polymer modified bitumen coating also gives an 

outstanding low temperature flexibility of minus 25°C. 

System benefits 

• BBA certification – durability at least 30 

years (BBA Certificate No. 91/2671) 

• PrevENt graphite firewall technology on all 

cap sheets – LPCB Approved 

• Highest UK and European fire performance 

EN 1187: Parts 1, 2, 3 and 4 (BS 476: 

Part 3: 2004) 

• Highly stable polyester/glass fibre laminate 

base fabrics 

• High content SBS polymer modification to 

coating bitumen 

• Low temperature flexibility - minus 20°C 

• Comprehensive guarantees available 

covering materials, workmanship and 

design. 

‘Ultra’ Service Package: 

• Full site survey and condition report 

• Full written specification 

• Routine site inspections 

• Approved Contractor application with 

IKO trained and badged operatives 

• Guarantee sign off 

• Single point guarantees covering materials, 

workmanship and design – independently 

insurance-backed 


www.ikogroup.co.uk


Guardian 

IKO’s Guardian system has evolved to offer 

the ultimate combination of proven products, 

speed of application and safe installation 

practices on site. The system effectively 

combines the use of a quality self-adhesive 

underlay, high performance PIR insulation, 

and the proven performance of either a 

torch-on or pour and roll Ultra prevENt cap 

sheet. 

Guardian (Hybrid) Warm Roof System 

1. Ultra prevENt Cap Sheet 

(Torch-On or Pour and Roll options) 

2. Systems S-A Underlay 

3. Enertherm PIR ALU Insulation 

(bonded in IKOpro PU Adhesive) 

4. Systems S-A Vapour Control Layer 

(Deck primed with Systems Bonding Agent) 

1 

2 

3 

4 

Torch-on systems 

Ultra prevENt T-O membranes are applied by 

torch or hot air application. They offer simple, 

rapid application and are installed by skilled, 

trained operatives. Torch-on membranes 

provide a simplified detailing option and can 

therefore be used to compliment a variety of 

other systems. As the bonding bitumen forms 

part of the core membrane itself, torch-on 

systems provide additional certainty of 

completely homogenous modified bitumen 

throughout. 

Torch-On Warm Roof System 

1. Ultra prevENt T-O Cap Sheet 

2. Systems T-O Underlay 

3. Enertherm PIR BGF Insulation 


4. Systems T-O Vapour Control Layer 

5. IKOpro Fast Dry Primer 

1 

2 

3 

5 

4 

Pour and roll systems 

Ultra prevENt Pour and Roll membranes are 

applied by pouring and rolling in hot bitumen 

or specialist cold adhesives. This traditional 

method of application provides a tried and 

trusted waterproofing solution, with both 

partially and fully bonded systems available. 

Pour and roll systems also offer additional 

peace of mind, as secure bonding is achieved 

through the use of a separate cold or hot 

applied adhesive. 

Pour and Roll Warm Roof System 

1. Ultra prevENt Pour and Roll Cap Sheet 

2. Systems Pour and Roll Underlay 

3. Type 3G Venting Layer 

4. Enertherm PIR MG Insulation 

(bonded in Easy Melt Bitumen) 

5. Systems Pour and Roll Vapour Control Layer 

(bonded in Easy Melt Bitumen) 

1 

2 

3 

5 

4 


www.ikogroup.co.uk


Mach One 

Traditional flat felt roof finish with the 

sophistication of modern membranes 

Mach One was designed in response to the demand for a cleaner, 

sustainable and fast track construction method and as a solution for 

projects whose criteria require cold applied installation. 

Mach One is a robust single layer system which can be mechanically 

fixed, ballasted or bonded with polyurethane adhesive. 

Mach One offers a fast, clean and flame free solution. When combined 

with the heat activated detailing membrane and vapour control layer, 

the need for hot poured bitumen or gas torches are eliminated. 


• Full site survey and condition report • Guarantee sign off 





• Approved Contractor application with insurance-backed 



• BBA certification – durability at least 25 

years (BBA Certificate No. 00/3760) 

• Quality in Construction (R&D) Award 

• Flame-free system 

• Fire safe in service – PrevENt Graphite 

Fire Wall Technology 

• PU adhered or mechanically fixed options 

• Single layer, highly robust membrane 

• Superior puncture resistance 

• Rapid, clean and safe installation 

• SBS elastomeric bitumen coating 

(low temperature flexibility –20°C) 

• Rapid sealing of laps 



design. 

Leicester Royal Infirmary 


www.ikogroup.co.uk


System description 

Mach One roofing membranes are produced 

using a polyester/glass fibre composite 

reinforcement with exceptional mechanical 

strength and dimensional stability. The 

reinforcement is saturated and then coated 

with a high percentage SBS modified bitumen 

Single Layer Warm Roof System 

1. Polimar Liquid Detailing (optional) 

2. Mach One Cap Sheet 

(bonded in IKOpro PU Membrane Adhesive) 

3. Enertherm PIR MG Insulation 

(bonded in IKOpro PU Insulation Adhesive) 


(deck primed with Systems Bonding Agent) 

1 

1 

and surfaced with green, brown or black 

mineral granules. The product also 

2 

incorporates the latest graphite technology to 

ensure the highest fire performance 

standards. The product has a 120mm wide 

3 

selvedge to allow for mechanical fixing and 

to facilitate the heat welding of side laps. 

4 

System accessories 

A wide range of accessories accompany the 

Mach One System, including insulation, 

detailing membrane, vapour control layers, 

prefabricated edge details and PU adhesives 

to allow Mach One membranes to be 

installed using flame free installation methods 

to most types of roof deck. 

“Mach One fits the bill for 

a lot of clients. We find it 

ideal for projects where 

safety issues are of 

paramount importance.” 

Craig Thomas, Dalkia 



Safestick prevENt 

Cold applied, fire retardant, 

outstanding performance 

The Safestick prevENt system has been uniquely developed to offer 

specifiers, building owners and contractors alike a totally coldapplied, 

high performance built-up flat roofing system. 

This SBS modified self-adhesive system combines the revolutionary 

prevENt graphite technology with the very latest tackifier chemistry 

to provide unrivalled waterproofing security and peace of mind. 


• Full site survey and condition report • Guarantee sign off 





• Approved Contractor application with insurance-backed 



• Fire safe in application– no naked flames 

used during installation 

• Fire safe in service – PrevENt Graphite 

Fire Wall Technology 

• Meets highest UK and European fire 

performance standards: EN 1187 Parts 1, 

2, 3 and 4 (BS 476: Part 3: 2004) 

• Easy installation – self adhesive/heat 

welding, no gas torches or hot bitumen 

required 

• High strength – tough polyester based 

membranes 

• SBS elastomeric bitumen coating 

(low temperature flexibility -20°C) 

• Application in temperatures as low as 5°C 

• Ideal for use as complete roof 

waterproofing, or as a fire safe detailing 

option 



design. 


www.ikogroup.co.uk


Typical uses 

Safestick prevENt has been produced 

specifically for the professional installer for 

use where traditional hot application 

techniques are inappropriate or prohibited by 

client requirement. The combination of high 

tensile polyester bases and SBS elastomeric 

bitumen coatings, ensures all the tried and 

trusted benefits of a high performance multilayer 

built-up system are achieved with a 

totally fire safe application technique. In 

addition, Safestick PrevENt also features the 

IKO Graphite Firewall Technology in the cap 

sheets, ensuring compliance with the highest 

UK and European fire performance standards. 

As well as being used for full roof system 

installations, Safestick prevENt membranes 

can also be used as detailing or fire-break 

materials at detail work, when using hot 

applied systems. 

Self-Adhesive (Cold Applied) Warm Roof System 

1. Polimar Liquid Detailing (optional) 

2. SafeStick prevENt S-A Cap Sheet 

3. SafeStick prevENt S-A Underlay 





1 

3 

4 

5 

1 

2 

“Fire-safe in service, 

fire-safe in application” 


www.ikogroup.co.uk


Other built-up roofing systems 

Specification systems tailored to meet specific client requirements 

Goldseal and Superflex are established and trusted brands, which 

offer the specifier and building owner comprehensive and costeffective 

flat roofing remedy for new build and refurbishment 

projects. These membranes are produced using high performance 

polyester reinforcements, offering exceptional mechanical strength 

and dimensional stability, and contain prevENt graphite technology 

for improved fire performance. 

Superflex 

1 

2 

3 

4 

System options 

Goldseal and Superflex cap sheets are 

available as pour and roll or torch-on options 

to allow compatibility across application 

methods to suit site specific requirements. 

These products can also be specified as 

‘Guardian’ hybrid system. This popular option 

(shown opposite) consists of a high 

performance self-adhesive underlay, 

Enertherm PIR insulation, and a choice of 

either a torch-on or pour and roll cap sheet. 


• BBA Approved (Certificate No 91/2671) 

• Tough rot proof polyester reinforcement for 

membrane strength and durability 

• Robust membrane with excellent tensile 

strength, elongation and tear resistance 

• prevENt graphite fire retardant formulation 

• Pour and roll and torch-on membrane 

options 

• Excellent puncture resistance against 

trafficking during work operations 

• SBS elastomeric bitumen coating (low 

temperature flexibility –20°C) 

• Long life expectancy. 

Guardian (Hybrid) Warm Roof System 

1. Goldseal Cap Sheet 

(Torch-On or Pour and Roll options) 

2. Systems S-A Underlay 





‘Enhanced’ Service Package: 

• Optional site survey and condition report 


• Registered Contractor application 

• Range of guarantees covering materials 

and workmanship 


www.ikogroup.co.uk


Quadra systems utilise modern bitumen technology in an innovative 

concept. They offer an ideal cost-effective overlay system for 

existing bituminous roofing membranes and can be used in either a 

one or two-layer system. Quadra membranes feature a diamond 

shaped coating on the underside of the membrane which is applied 

using heat activation, and subsequently permits the membrane to 

act as a vapour diffusion layer. This results in a bonding area to the 

substrate of approximately 40%, providing good bond strength and 

reducing the effect of blistering caused by trapped moisture. 

1 

2 

System options 

Quadra can be used in single layer overlay 

situations, using Quadra prevENt T-O. This is 

an APP modified partial bond cap sheet with 

built-in prevENt graphite technology for 

added fire protection. The underside of the 

roofing membrane is printed with a 

thermofusible film, and the top surface is 

finished with an attractive dark grey mineral 

slate. Alternatively, a two-layer system can be 

specified, utilising Quadra Rock T-O partial 

bond underlay, followed by a fully bonded 

cap sheet of choice. 


• Systems fully applied by torching 

• No bitumen boilers or cold adhesives 

required on site 

• Rapid installation – up to 25% faster than 

traditional application 

• Energy efficient – uses less gas 

• ‘Diamond’ vapour diffusion system prevents 

blistering by trapped moisture 

• Excellent adhesion to substrate. 

1. Existing roof substrate 

2. Quadra prevENt T-O single layer overlay 

‘Enhanced’ Service Package: 

• Optional site survey and condition report 


• Registered Contractor application 

• Range of guarantees covering materials 

and workmanship 

Complementary Systems Membranes: 

Specialist high performance underlays and vapour control layers 

The quality of the products that 

lie beneath the surface of the 

roofing cap sheet is just as 

important as the cap sheet itself. 

The success of IKO’s built-up 

roofing systems is based on a 

solid and reliable foundation, and 

IKO is proud to be able to offer 

an unrivalled range of underlays 

and vapour control layers which 

help provide outstanding 

protection to the building. 

Systems Vapour Control Layers 

Vapour control layers are an essential part of 

any warm roof build up. When placed 

beneath the insulation in this kind of 

construction, these membranes play a vital 

role in controlling the passage of water 

vapour and reducing the risk of condensation. 

IKO’s Systems Vapour Control Layers are 

highly durable against water vapour and 

exhibit excellent mechanical properties. They 

are also available to suit either torch-on, pour 

and roll or self-adhesive specifications. 


• Aluminium core 

• High tensile polyester base 

• SBS bitumen coating low temperature 

flexibility –20°C 

• Prevents penetration of water vapour and 

damage to roof construction 

• Torch-on, pour and roll and self-adhesive 

options. 

Systems Underlays 

Many of IKO’s built-up roofing systems 

include the use of a high performance 

underlay. Incorporating a tough polyesterreinforcement 

base and SBS modified 

bitumen, ‘Systems’ Underlay Membranes 

provide important additional strength and 

waterproofing security to the overall system. 

Furthermore, with a full suite of application 

types, including torch-on, pour and roll and 

self-adhesive, there is the ideal underlay for 

every flat roofing requirement. 


• High tensile polyester base 

• High resistance to damage and 

delamination 

• SBS bitumen coating offering excellent low 

temperature flexibility 

• Range of application methods to suit 

project requirement. 




www.ikogroup.co.uk


IKO Enertherm 

High performance thermal insulation 

IKO Enertherm insulation boards are made from lightweight, fire 

resistant, rigid PIR foam core, with high compressive strength and 

dimensional stability. The highly efficient closed cell structure has a 

low thermal conductivity and easily achieves required U-values with 

a minimum thickness. 

The current requirements for thermal insulation are set out in 

Building Regulations Approved Documents L1 and L2 2010: 

Conservation of fuel and power. 

Key benefits of IKO Enertherm 

insulation 

• Fire performance polyisocyanurate 

foam core 

• Mineral glass or composite aluminium 

facings available 

• Lightweight and easy to handle 

• High insulation value/low thermal 

conductivity 

• Rot proof, durable and maintenance free 

• Ideal for meeting the increasingly 

demanding Building Regulations and Part L 

requirements 

• Tapered/cut-to-falls boards also available 

• Zero Global Warming Potential 

• Zero Ozone Depletion Potential 

• Fire classification for ALU boards - Euroclass 

Bs2 d0 (application on metal decks). 

IKO Enertherm PIR MG 

A totally CFC/HCFC-free, rigid 

polyisocyanurate foam insulation board, faced 

on both sides with perforated (mineral 

coated) glass tissue. IKO Enertherm PIR MG 

has a thermal conductivity value of 

0.027W/mK (80mm thickness and above). 

Board Size: 1200 x 1000mm 

IKO Enertherm PIR ALU 


polyisocyanurate foam insulation board, clad 

on both sides with a structured aluminium 

sheet. IKO Enertherm PIR ALU offers 

outstanding insulating properties, with a 

thermal conductivity of 0.023W/mK. 


Aluminium faced angle fillets also available in 

this range. 

IKO Enertherm BGF 


polyisocyanurate foam insulation board, 

faced on both sides with a bituminous glass 

fleece and finished with a polypropylene film. 

IKO Enertherm PIR BGF has a thermal 

conductivity value of 0.027W/mK (80mm 

thickness and above) and is suitable for use 

within fully-bonded torch-applied roofing 

systems. 


U-values (W/m²K) 

Insulation IKO IKO IKO 

thickness Enertherm Enertherm Enertherm 

PIR MG* PIR ALU* PIR BGF* 

50 0.42 0.37 0.42 

60 0.37 0.32 0.37 

70 0.32 0.28 0.32 

80 0.29 0.25 0.29 

90 0.26 0.23 0.26 

100 0.24 0.21 0.24 

110 0.22 0.19 0.22 

120 0.20 0.17 0.20 

130 0.19 0.16 0.19 

140 0.18 0.14 0.18 

* The U-value calculations are based on the following 

construction build up: Built-up Roofing – Selected 

Insulation – Metal Lined Vapour Barrier – 18mm Ply/ 

Timber Decking – Ceiling Void – 13mm Plasterboard – 

2mm Plaster Skim. 


CI/SfB (37.4) Xy 

January 2012 

CI/SfB (37.4) Xy 

January 2012 


System accessories 

Preformed Bituminous Details 

Roofing upstands and drip edges offering 

cost effective and fast-track installation.These 

units are mechanically fixed to the substrate 

with hot air welded lap joints. Preformed 

bituminous details provide secure 

waterproofing and are durable and 

maintenance-free. 

IKO Polimar Liquid Detailing 

IKO Polimar is a high performance, cold 

applied liquid roofing system, which is ideal 

for use in a number of application areas. 

In addition to being used as a complete 

waterproofing system, IKO Polimar is 

particularly suited to areas where there is 

difficult access or where there are complex 

details that need to be waterproofed. IKO 

Polimar is also an excellent cold detailing 

option for use with one of IKO’s bitumen 

membrane systems. When combined in this 

way with an IKO Specification, Polimar is 

covered under our comprehensive single 

point guarantee. 

Superlite rooflights 

Superlite rooflights are a range of high quality 

triple glazed UV protected thermoformed 

polycarbonate domes and multicell white 

PVCu upstands. The whole unit U-Value 

exceeds the requirements of Approved 

Document L 2006. The polycarbonate dome 

is non-fragile and fire rated to Class 1 and 

Class AA. Superlite rooflights are suitable for 

installation as part of a bituminous 

membrane, polymeric single ply or mastic 

asphalt system. 

Shape: Superlite rooflights are available in 

square, rectangular or circular format. 

Sizes: Superlite rooflights are available in an 

extensive range of sizes from 400 x 400mm 

to 1700 x 2900mm. 

The following dedicated brochures are 

also available: 

IKOtrim Roof Edge Trims 

Superlite Rooflights 

IKOtrim GRP Roof Edge Trims 

Manufactured from pultruded glass fibre 

reinforced polyester resin, these trims are 

thermally inert with a low coefficient of 

expansion. Units are supplied in 3.0m 

lengths, and in colours: black, white or grey. 

Matching internal/external corner units 

(240mm x 240mm) are also supplied. 

Permatrim Wall Flashing is used to cover the 

leading edge of an upstand detail, where the 

substrate does not allow the execution of a 

traditional chase or cover flashing detail. 

Units are supplied in 3.0m lengths. Standard 

stock colour is black, but some other colours 

are available to special order. 

IKOtrim GRP Roof Edge Trims have been 

carefully chosen to suit nearly all roofing 

applications and to complement the products 

and the different application techniques 

available within the IKO roofing range. 


www.ikogroup.co.uk


Rainwater Outlets 

Primarily designed for refurbishment 

application, the IKO AH Refurbishment 

Outlet has a one-piece spun-aluminium body 

which is 3.2mm thick, and a heavy duty cast 

aluminium clamping ring, which suits most 

flat roof membranes and coverings. 

The outlet flange is extra large at 445mm 

diameter giving excellent coverage over old 

outlets and has a depressed sump area to 

facilitate maximum water drainage from the 

roof surface. The outlet incorporates the 

patented seal providing a mechanical 

watertight connection. 

Available in 75, 100 and 150mm diameter 

sizes. Manufactured to meet National 

Plumbing Code ULC/RD C790.4 

requirements. 

Lightning Conductor Clips 

IKO’s Ultra prevENt Lightning Conductor 

Clips are easy to install and offer safe and 

secure bonding. 

These specially designed and manufactured 

clips allow for thermal movement of the 

conductor and are fully compatible with all 

Ultra prevENt built-up roofing systems. 

They consist of a purpose made clip which is 

mechanically fixed to an Ultra prevENt torchon 

membrane pad. They are available in 

brown, grey/green and black to perfectly 

match the finish of any Ultra prevENt system. 

Primers and Adhesives 

IKO is able to offer an effective range of high 

performance primers and adhesives to 

compliment its built-up roofing systems. 

IKOpro Systems Bonding Agent is ideal for 

preparing a range of substrates to receive 

self-adhesive bituminous membranes such as 

Safestick prevENt, while IKOpro PU Adhesive 

ensures an excellent bond is achieved when 

installing insulation boards as part of a builtup 

warm roof system. 

IKOpro Fastick PU Adhesive is a two part PU 

adhesive with a chemical cure, and is specially 

formulated to bond a range of recommended 

substrates. The product offers a fast setting 

time which will only show slight variations 

due to ambient weather conditions. Insulation 

boards will be ‘locked down’ (meaning that 

while not fully cured, the boards are secure 

and further roofing work may commence) 

within 5-10minutes, regardless of outside 

temperature, and the adhesive will be 

stronger than the insulation in 20 - 30 

minutes. IKOpro Fastick PU Adhesive has no 

upper or lower temperature limitations and 

has only one formula for all seasons. 

Fastflow Stainless Universal Guard Outlet 



System accessories (continued) 

Protectoboard 

A protection and roof recovery board 

fabricated with a bituminous core sandwiched 

between two layers of non-woven glass fibre 

reinforcement. Offering durable and reliable 

performance, and is fully compatible with a 

range of bituminous and non-bituminous 

waterproofing systems. 

Protectoboard is ideal for isolating and 

preparing the surface of existing roofing 

systems ready for the preparation of new 

bituminous roofing membranes, compatible 

polymeric membranes and liquid 



• Use for existing surface preparation or 

finished waterproofing protection 

• Robust and dimensionally stable 

• 3.2mm thick (standard) and 12.5mm thick 

(by special order) 

• Mechanically fixed or bonded in 

bitumen/PU adhesive 

• Easily cut and formed on site 

• Easily stored, requiring minimum storage 

space 

• Can directly receive torch applied, bitumen 

bonded or self-adhesive roof membranes 

• Ideal for use with IKO's range of torch-on 

products. 

IKOrail Guardrail Systems 

Barriers may be required to protect operatives 

from risk of falling from a roof and to retain 

objects and tools. Guardrails can either be 

fixed to a roof permanently or can be nonpenetrative 

in the form of free-standing with 

the use of a counter weight. 

IKOrail Guardrail Systems are free-standing 

barriers with up to 2m spacing between 

stanchions. They conform to the EN ISO 

14122-3 standard and do not require any 

specific maintenance. 

These systems are recommended when fixing 

to the parapet or the roof surface is not an 

option and are therefore popular within 

renovation projects. The free-standing 

guardrail is installed directly on the walkway, 

thus eliminating any problems linked to 

restoring waterproofing after piercing the 

roof membrane. 


IKOflash is a lead free flashing which can be 

used in areas where traditional lead flashing 

would be used such as chimney and 

abutment flashings, around rooflights and 

pitched valley linings. 

IKOflash is made from a modified 

polyethylene compound with an integral 

aluminium mesh reinforcement, enabling the 

product to be worked and formed in the 

same way as lead. The product is faced with 

a fine grey mineral. 


• Can be worked and formed in the same 

way as lead 

• Available in 6m & 12m sizes 

• Significantly lighter than lead flashing 

making it easier to handle 

• Rapid installation 

• Cost effective, with no scrap or re-sale 

value 

• Non toxic material. 

IKO D-marc Roof Demarcation System 

IKO D-marc 105 is a new wind-resistant 

demarcation system for flat rooftops. 

Applications may be for the purpose of 

preventing access to hazards during regular 

rooftop maintenance or to provide safe 

access across the roof. 

Wherever roof access is required, designers 

are tasked with creating a safe route which 

should be identified by a demarcation system. 

Traditional demarcation systems on rooftop 

applications suffer from instability and wind 

uplift causing them to fly off roofs at wind 

speeds as low as 50 mph. 

D-marc 105 has been wind tunnel tested on 

single ply, bituminous and concrete roof 

surfaces, resisting wind speeds in excess of 

105 mph. 

Protectoboard 


IKO D-marc Roof Demarcation System 

IKOrail Guardrail System 


www.ikogroup.co.uk




Sustainable roof engineering 

Meeting the challenge: environmentally friendly waterproofing performance 

Modern reinforced bituminous membranes not only provide 

outstanding waterproofing, but they offer exceptional ‘green’ 

credentials that help meet the demands of modern construction. 

Kind to nature 

• Bitumen is a hydrocarbon – a naturally 

occurring store of carbon that is insoluble 

and hence a natural waterproofing medium 

• Many modern membranes contain a range 

of recycled products, including plastic 

bottles, glass and cardboard 

• Bituminous membranes help protect the 

insulation, thus reducing energy loss 

through the life cycle of the building 

• Low maintenance costs – BS8747 gives a 

design life in excess of 50 years 

• At the end of their service life, bitumen 

membranes can be recycled into bulk or 

sheet bituminous products 

• Systems incorporating reinforced bitumen 

membranes achieve an A+ rating in the 

BRE Green Guide to Specification. 

Kind to people 

• Bituminous membranes do not generate 

any particular smell during use 

• Bitumen is not classified as carcinogenic 

and, at ambient temperatures, bitumen 

does not release any volatile organic 

compounds or harmful toxins 

• Bituminous systems are chemically stable 

and do not release any noxious fumes 

while being installed. 

“IKO’s mission is to develop low- energy, 

sustainable roof products and systems which 

enable our clients to meet the ever increasing 

performance requirements for buildings.” 


www.ikogroup.co.uk


Embracing the future 

Traditional high performance roofing in harmony with photovoltaics 

IKO’s range of high performance bitumen membrane systems also 

offer an excellent base onto which an IKO Solar photovoltaic energy 

roof can be placed. 

Whether it’s Mach One, Ultra prevENt or Safestick, these modern 

systems not only offer outstanding waterproofing performance, they 

also provide a hard-working, energy-generating roof, that gives 

added value and an attractive return on investment for many years 

to come. 

IKO Solar photovoltaic (PV) roofing systems 

convert natural sunlight energy into electrical 

current. The range includes solutions for both 

new build and refurbishment applications and 

offers some of the most efficient energy 

production available in the market today. 

IKO has carefully selected a range of 

powerful photovoltaic systems to perfectly 

complement its leading range of roof 

waterproofing membranes. IKO Solar systems 

include solutions for both new build and 

refurbishment applications and offer some of 

the most efficient energy production available 

in the market today. 

Supporting your commitment to 

environmental responsibility 

The IKO Solar roof plays a crucial role in 

energy generation and conservation, and 

provides the building owner with an 

attractive opportunity to create clean, 

renewable electricity. By investing in an IKO 

Solar energy roof and by taking measures to 

avoid wasting energy and water, you will set 

an important example to both your personnel 

and the community in which you operate. 

Dedicated IKO Solar brochure also available 



At one with nature 

Innovative green roof options 

There is no doubt that the development of urban areas, especially high rise 

buildings in major cities, has had a detrimental effect on the environment. 

Reducing the natural airflow, it also adds to dirt and pollution, higher 

temperatures and lower humidity levels. 

The innovation of green roofs is beginning to make a real positive 

difference, improving air quality during the natural process of 

photosynthesis and absorbing airborne pollutants through the leaves of 

plants. They also add to the aesthetic quality of the environment, help 

improve acoustic and thermal performance, and control the water run-off 

into surface water drainage. 

Many specifiers and building owners are 

therefore turning to green roof systems, and 

the numerous environmental benefits that 

they offer. IKO’s Permatorch Anti-Root is a 

specialist root-resistant membrane which 

forms the ideal waterproofing foundation on 

which a green roof can flourish. In addition 

IKOgreen extensive, intensive and biodiverse 

green roof systems feature a range of 

drainage and filter layer options, offered with 

a package of growing medium, planting 

schemes and accessories to cover a wide 

range of roofs. They have an established 

track record, not only in the UK but also 

across Europe, and can be designed 

specifically to meet the individual 

requirements of the project. 

Extensive Green Roofs 

Extensive green roofs are constructed using 

low maintenance planting, without the need 

for specific irrigation. Sedums (succulents) 

and indigenous herbs and grasses provide 

excellent cover and protection to the 

waterproofing system. They do not provide 

usable space or a surface that can be 

trafficked, but add instantly to the aesthetics, 

improve the local air quality and help to 

control rainwater run-off into surface water 

drainage systems. In addition, a correctly 

designed system upgrades the acoustic and 

thermal performance of roof finishes. 

An increased quantity of growing medium, 

improved drainage layers and irrigation 

systems are generally required to support the 

greater diversity of planting. Shrubs and trees 

can easily be accommodated, and there is 

little to restrict scope for design other than 

the overall weight of the system and the cost 

of its supporting construction. 

Biodiverse Brown Roofs 

Biodiversity roofs are another form of 

extensive green roof (i.e. low maintenance) 

that makes use of recycled materials (e.g. 

crushed brick, crushed concrete etc.) in the 

growing medium. This type of green roof is 

intended to create a natural wasteland and 

can be seeded initially with selected species 

to create some growth. However the basic 

design is to attract fauna and flora of all 

kinds. As the growing medium is not of high 

nutritional value, larger plants are not likely to 

survive and will die off creating further 

suitable habitat for invertebrates which in 

turn will attract other fauna. 

Intensive Roof Gardens 

With intensive roof gardens, the landscape 

variations are practically limitless, and it is 

feasible to create an environment at roof level 

similar to that of any designed garden. 

Dedicated IKOgreen brochure also available 


www.ikogroup.co.uk


Air care technology 

Ecological roofing membrane with white mineral finish 

IKO Carrara is an innovative, ecological roofing membrane, combining all 

known technologies for the improvement of the environment. 

The mineral finishing of IKO Carrara is coated with a special type of titanium 

dioxide (TiO2). Under the influence of UV rays, the membrane acts as a 

catalyst and converts nitrogen oxides and sulphur oxides (NOx and SOx), 

which are contributory factors in the acidification of the environment and 

the greenhouse effect, into harmless and environmentally-neutral substances. 

This IKO “Air Care Technology” results in a contribution to the reduction of 

the extremely damaging, so-called secondary particle matter in the air. 

Air-purifying 

• Air-purifying effect through the conversion 

of NOx (nitrogen oxide) and SOx (sulphur 

oxide) into harmless environmentally-neutral 

substances. 

‘Cool roof building’ 

• The top coating of IKO Carrara consists of a 

highly reflective white, mineral finish. The 

membrane’s high emissivity efficiently radiates 

the absorbed heat through infrared radiation, 

ensuring that less active cooling is required 

within the building. This results in less energyconsumption 

and therefore a reduction in the 

carbon footprint of the building. 

• The white mineral finish not only provides 

UV protection for the roof membrane, it also 

reduces the surface temperature by more than 

30°C. This leads to far fewer thermal shocks, 

increasing the expected service-life by at least 

5 years. 

• The ‘Urban Heat Island Effect’ (a blanket of 

hot air above our cities) can be significantly 

reduced by using the membrane, resulting in a 

more pleasant urban environment. 

Recycled raw materials 

• A substantial proportion of the bituminous 

coating of the IKO Carrara roofing membrane 

consists of recycled raw materials, including 

regenerated bitumen from old roof coverings 

and obsolete stock. The high quality 

reinforcing carrier is also manufactured using 

recycled polymers. 

100% green energy 

• The production of IKO Carrera is powered 

by 100% green energy. The consumption of 

fossil fuels is therefore reduced, again resulting 

in a significant reduction in CO2 emissions. 

Proven quality and durability 

• IKO Carrara is a roofing membrane with a 

proven durability of +30 years. (Source BDA: 

rapport08-B-0035) 

• The membrane incorporates a high-quality 

tri-laminate polyester composite 

reinforcement, offering extremely high 

mechanical values. The reinforced carrier also 

provides exceptional dimensional stability and 

resistance to delamination. 

• IKO Carrara includes IKO’s patented Turbo 

profiling for fast and secure installation. 

Reflecting 

Resistant to the incipient spread of fire 

• IKO Carrera features built-in ‘prevENt 

technology, providing outstanding fireresistance 

through natural, expandable 

graphite crystals that are applied to the carrier 

during the production. 

Emitting 



The IKO Circle of Service 

A safe pair of hands... and the perfect partner 

Consultation 

Inspection 

Installation 

IKO 

Circle of 

Service 

Survey 

Design 

Solutions 

A complete waterproofing service 

Specifying or maintaining a flat roof - or any 

roof, for that matter - is a task that carries 

serious responsibility. 

A roof that isn’t right for the job can quickly 

undo all the good work that’s gone into the 

rest of the project. It can also lead to time 

consuming, expensive remedial work to put 

things right. That’s why it’s important to be 

confident you’ve made the right choice from 

the very start. After all, your roof is one of 

your most valuable assets. 

An IKO flat roofing solution gives you 

reassurance of working with an 

acknowledged leader in the design and 

implementation of proven roofing and 


IKO PLC are part of the IKO Group, a global 

specialist with a reputation for innovation and 

quality stretching back over 100 years. That 

gives us a level of knowledge and support 

unrivalled by any other roofing system 

provider; a difference you’ll appreciate in the 

service, expertise and performance we bring 

to your project. Not just during installation, 

but before, at the design and consultation 

phase. This support continues for years 

afterwards, when we perform regular 

inspections and servicing to maintain the 

integrity and performance of your roof. 

At IKO, just like the dedicated roofing 

solutions we provide, we’re here for you in 

the long run. 

The IKO Partnership Plan 

We believe the best results occur when 

partners work towards a common goal. So 

we work side by side with our clients to share 

their problems and priorities - and plan a 

pathway to the roofing solution that’s exactly 

right for them. 

By understanding your requirements from 

your perspective, we’re able to deliver 

bespoke packages that suit the exact 

parameters of your project. Leading to better 

quality, better performing roofing supplied on 

budget, on time, every time. 

As your roofing partner, we’ll guide you step 

by step through the key stages that make up 

the ‘spine’ of a successful project. 


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Our Consultation provides 

the complete picture 

We start by listening to you, 

your requirements and your 

brief for the project you would 

like us to take on. Then, we’ll 

discuss the finer details with 

you so that every aspect of 

your new or replacement 

roofing system has been 

covered. 

Among other things, we’ll look at: 

• Your building use: Is it a residential 

project, a public building or a works 

unit? 

• Performance: Are you expecting your 

roof to keep in noise as well as keep out 

water? 

Are there thermal insulation 

requirements above and beyond those 

set in the regulations? 

RIBA approved CPDs are available 

• Budgets: What are you expecting to 

achieve within your given funds? 

• Guarantee requirements: We offer a 

range of service contracts and 

guarantees. Which will suit you best? 

• Planned maintenance: We can plan for 

regular inspections and maintenance to 

prolong the life of your roof in the short 

and long term. 


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Our in depth Survey 

techniques will give you 

all the details you need 

For refurbishment projects, an 

exhaustive and hi-tech 

assessment of the roof surface 

and sub layers, carried out by 

our skilled and experienced 

surveyors will give you a 

thorough analysis concerning 

the condition of your roof. 

This will involve: 

• Visual and physical inspections, including 

core sampling and moisture probe analysis 

• Detailed defects analysis and 

recommendations for repair or replacement 

• A complete catalogue of deck type, 

insulation, waterproofing, drainage, 

detailing and accessories 

• Photographic records 

The above investigation work will usually 

ensure we have the knowledge we need to 

give you the best advice. 

However, in more challenging circumstances, 

we can employ the latest Roofscan Infra-red 

imaging technology to confirm our findings 

or reveal a more detailed and complete 

picture of the existing roof build-up. This 

allows us to measure accurately the extent of 

any water ingress and make a more informed 

judgement on which areas must be stripped 

and which can be overlaid; providing more 

accurate information for planning and 

budgeting. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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bespoke Design 

that’s always a perfect fit 

The 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Now we can compile a full set of bespoke specifications for the job, taking into account 

everything our discussions and surveys have told us: 

Technical calculation service. 

This service allows the assessment of thermal performance and condensation risk within the 

roof build-up. In addition, calculation can assess the potential effect of wind uplift on the roof, 

allowing us to design the specification accordingly. We can also calculate the weight load of 

the specified system, to allow structural advice to be sought, where appropriate. 

Building Regulations compliance 

Our recommendations can include all current and anticipated requirements for drainage, 

thermal, fire and acoustic performance. 

Tapered insulation schemes 

We can design insulation which is tapered to create the falls required for drainage and comply 

with overall thermal performance requirements. 

Accessories and access planning 

Full specifications for rooflights, outlets, handrail systems and trim positioning will be prepared 

as will plans for maintenance walkways or escape routes. 

CAD site plans 

General layout plans for the roof can be provided, supported by detail drawings of perimeter 

abutments and roof penetration points. 

Photovoltaics and green roof design 

Our in-house experts can also advise on specification design criteria relating to photovoltaic 

energy roofs and roof garden systems. 



The Solution that covers 

every eventuality 

Our unparalleled choice of flat roof waterproofing systems 

is one of the reasons we’re preferred partners for so many specifiers, contractors, 

building managers and local authorities across the UK and beyond. 

Our extensive product portfolio is a result of significant investment in R&D on a 

global scale. Unparalleled in the industry, the IKO range encompasses both 

traditional roofing systems and innovative solutions including green roofs and solar 

power. 

It is this breadth and diversity which enables us to match 

the perfect product to every project, whether it is new build 

or refurbishment. 

Reinforced bitumen membrane systems Mastic asphalt systems Hot melt systems 

Polymeric single ply systems 

Cold applied liquid systems 

Insulation technology 

A full range of system accessories 

and roof asset management services 

ensures the IKO technology you 

choose to renew or refurbish your 

roof will continue to return your 

investment for many years to come. 

Green roof systems 

Photovoltaic energy roofs 


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Installation by trained and 

qualified contractors - 

nationwide 

IKO’s high performance roofing systems are 

only ever installed by fully qualified and 

registered IKO contractors. 

With selection and training criteria that are 

among the most demanding in the industry 

and nationwide network coverage, you can 

be confident that wherever you call on their 

services, your installation will be managed to 

the highest possible standards. 

Under the terms of our installation contract, 

you’ll enjoy agreed service levels for; 

• Pre-contract meetings 

• Dedicated project monitoring 

• Qualified on-site supervision 

• Reporting procedures and client 

liaison 

• Management of variations 

• Review meetings 

• Regular site inspections 

• Making good and site clearance 

• Sign-off inspections 

• Prompt and professional response to 

technical issues on site. 

A planned schedule 

of Inspection for 

total peace of mind 

An IKO flat roof solution is an investment that can deliver up to 50 years 

of faultless service. 

We reckon that kind of long-term commitment from you deserves an 

equally long-term commitment from us. 

A framework of inspection and maintenance visits is available through our 

network of Approved Installers. A programme of periodic visits can be 

established throughout the period of the guarantee. 

As part of our service, you’ll benefit from: 

• Regular written reports 

• A centralised database containing all the technical details of your roof 

from consultation to completion 

• The option of a managed project file 

• A CD ROM or client specific internet portal through 

which you can access all the information on your project 

at any time. 


38 REINFORCED BITUMEN MEMBRANE ROOFING FOR MODERN CONSTRUCTION 

IKO in the UK: manufacture, investment 

and quality for over 100 years 

BUILDING PRODUCTS 

Ruberoid Roofing 

invented 

Captain Scott’s Hut is 

waterproofed with 

Ruberoid materials 

Development of profiled 

steel sheet roof decking 

pioneered by Ruberoid 

IKO is formed in 

Canada 

Fire tests carried out on 

Ruberoid Re-inforced 

Glass Fibre Base Roofing 

1891 1910 1928 1949/51 1955 

Ruberoid launch 

copper roofing 

1959 

1883 

F. McNeil & Co. Ltd. is 

formed (later to become 

Marley Waterproofing) 

1900 

Permanite Ltd 

founded 

1920 

Ruberoid’s first advert 

placed in architectural press 

1946 

‘Self-finished Bituminous 

Roofings’ CPD given to 

Ironmongers Association 

1954 

Ruberoid creates first 3D 

drawing to assist designers 

1959 

Ruberoid International 

Technical Committee is 

established 

“ You are dealing with the market 

specialists who have experts 

readily available to help you” 

“ You can be confident of an industry 

leading technical support service, 

nationwide and complete” 

• IKO understands the types of projects a client will be dealing 

with - we can always provide the optimum solution 

• Our personnel are very experienced - you will be dealing with 

people who have the expertise to be your single point of contact for 

all your flat roofing and waterproofing requirements 

• We employ enough staff to effectively manage your requirements 

and ensure rapid response times 

• We are committed to improving industry technical standards AND 

making clients’ budgets go further in these difficult times 

• Our Contractors are fully trained in all IKO products, and are 

regularly vetted as part of our ongoing QA procedures. 

• Site surveys include core sample analysis with the aid of moisture 

probes, along with photographic summaries, enabling us to provide 

concise information on existing roof stock 

• Comprehensive, detailed reports are provided to enable accurate 

diagnosis and effective specification 

• The latest in infra-red thermographic imaging helps us to clarify the 

true extent of any damage, whilst also identifying areas that do not 

require remedial works 

• We provide bespoke waterproofing specifications, offering a range 

of products to suit the individual requirements of our clients and 

their roofs 

• We offer assistance with vital design considerations, such as CDM 

regulations, Part L, tapered insulation and roofing accessories. 


www.ikogroup.co.uk

REINFORCED BITUMEN MEMBRANE ROOFING FOR MODERN CONSTRUCTION 39 

Hyload DPC is 

awarded 

first ever 

BBA certificate 

1967 

Manufacture of 

roofing felt 

commenced at 

Appley Bridge 

1968 

Permanite launches 

their first Roof 

Garden Engineering 

Brochure 

IKO enters the UK 

market and 

acquires Ruberoid 

IKO Group acquires 

Marley Waterproofing 

IKO launch solar 

photovoltaic 

energy roof 

system in the UK 

Multi-million 

pound investment 

on Appley Bridge 

production line 

1977 2000 2006 2009 2011 

1967 

F. McNeil & Co. Ltd 

becomes first to 

introduce single ply 

roofing into UK 

1977 

Marley 

Waterproofing 

acquires 

F. McNeil & Co. Ltd 

1983 

Ruberoid produces 

first edition of 

acclaimed 

‘Blue Book’ 

2005 

Permanite Engineered 

Roofing Systems brand 

is created 

2007 

IKO supplies replacement 

materials to Scott’s Hut, 

nearly 100 years after 

original Ruberoid 

2009 

IKO becomes UK’s 

first domestic 

manufacturer of 

single ply roofing 

“ Here for you now, and we will 

be there for you in the years 

to come” 

“ We take our environmental 

and social responsibilities 

seriously” 

• We have a successful track record stretching back over 100 years 

and are proud of our heritage and reputation in the market 

• As part of the international IKO Group, we have a long-term 

approach and continue to invest in research and development, 

people and infrastructure within the UK market 

• IKO has a sound UK business footing and we will be around 

to honour our commitments and guarantees 

• We have practical and proven partnering experience, 

and we already operate with a wide variety of procurement options 

• Our Technical Services Team are here to ensure that the system is 

installed correctly at each stage of the process, giving you roofing 

peace of mind. 

• Our product range is manufactured in the UK, giving jobs to UK 

people. This also helps minimise our carbon footprint through 

reduced delivery miles 

• Our built-up roofing systems provide excellent thermal and acoustic 

performance, while our green roof and photovoltaic options offer 

innovative energy saving possibilities 

• Recycled materials such as glass, cardboard and plastic bottles are 

incorporated into many products 

• We are ISO 14001 and ISO 9001 accredited and have driven 

numerous initiatives to reduce unnecessary packaging and reduce 

site waste 

• Our products are developed to meet the latest BREEAM 

requirements 

• We are actively involved in community initiatives, such as working 

with local authorities to help introduce school children to career 

options within the construction industry. 


www.ikogroup.co.uk

IKO PLC 

Sales Support 

Northern Ireland 

Ireland 

Appley Lane North 

T: 0844 873 1063 

14 Sanda Road, 

502 Northwest Business Park 

Appley Bridge 

F: 0844 873 1067 

Whitehouse, Newtownabbey 

Ballycoolin 

Wigan, Lancashire WN6 9AB 

E: sales@ikogroup.co.uk 

County Antrim BT37 9UB 

Dublin 15 


Member of the IKO Group 

Export enquiries 


Technical Services 

T: 0844 412 7207 

F: 0844 412 7208 

E: technical@ikogroup.co.uk 

T: 028 9086 7079 

F: 028 9086 9079 

E: waterproofing@iko-ni.com 

www.iko-ni.com 

T: 01 8855 090 

F: 01 8855 858 

E: waterproofing@iko.ie 

www.iko.ie 

Whilst every care is taken to see that the information given in this literature is correct and up to date, it is not intended to form part of any 

contract or give rise to any collateral liability, which is hereby specifically excluded. Intending purchasers of our materials should therefore 

verify with the company whether any changes in our specification or application details or otherwise have taken place since this literature 

was issued. Colours in this brochure are as accurate as the printing process will allow. The paper used to print this brochure is 

manufactured using only natural wood pulp originating from managed, sustainable plantations, and is chlorine and acid free. 

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BUFR Design Guide - IKO

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