CE139 - Energy Saving Trust

CE139
Building energy efficient
buildings using modern
methods of construction

Contents
Introduction 3
What are ‘modern methods of construction’ 4
Energy efficiency 4
Volumetric construction 5
Panellised timber frame 5
Modern methods 5
Panellised steel frame 6
Structural insulated panels (SIPs) 6
Composite panels 7
Tunnel form construction 7
Insulating formwork 8
Aircrete block and plank 8
Costs and conclusions 9
Case study 1:
Tunnel form in-situ concrete (Millennium Plus at the Nightingale) 10
Case study 2:
Panellised light gauge steel frame (Oakridge Estate, Basingstoke) 11
Case study 3:
Super E timber frame (North Bersted) 12
Case study 4:
Hybrid steel frame (Georgian Gardens) 13
Case study 5:
Structural insulated panel (Sompting, Sussex) 14
Case study 6:
Timber I beam ‘zero heating’ home (Peterculter) 15
Building energy efficient buildings using modern methods of construction

Introduction
Home energy use is responsible for 28 per cent of
UK carbon dioxide emissions which contribute to
climate change. By following best practice standards,
new build and refurbished housing will be more
energy efficient and will reduce these emissions,
saving energy, money and the environment.
Housing Associations are currently being strongly
encouraged by the Housing Corporation to use
innovative forms of construction (so-called ‘modern
methods of construction’) when building new
developments. This policy is a direct result of the
Government’s response to a number of drivers that
have resulted in what it perceives to be a crisis in
housing supply.
The annual rate of house building is currently at its
lowest point for many years. The main reason for
this decline is the level of local authority procurement
falling to around zero by the early 1990s. The rate of
private sector house building has remained reasonably
constant over the last 30 years, and while housing
association new build increased slightly to a peak of
around 30,000 in the mid 1990s it never compensated
for the fall in local authority build.
Despite the encouragement from political and
regulatory quarters to make greater use of modern
methods, many stakeholders are still unsure about
modern methods of construction for a number
of reasons. In the case of housing associations
there is uncertainty about whether or not modern
methods are able to deliver energy efficient homes
at affordable prices. This leaflet aims to demonstrate
that homes that exceed the requirements of building
regulations in terms of their energy efficiency can be
built cost-effectively.
All the schemes illustrated meet the requirements of
the Energy Saving Trust best practice standards for
new build in terms of their Carbon Index and many of
their U-values. The Energy Saving Trust best practice
standards have energy efficiency requirements that go
beyond building regulations for new housing. Details
of the standards are given in a separate Energy Saving
Trust publication – see back page for details.
In areas of growth, house construction in the private
sector has tended to concentrate on the production
of traditional houses – either semi-detached family
homes or larger detached executive homes. These
private sector dwellings are beyond the reach of most
first time buyers, particularly key-workers in relatively
low-paid jobs in the public sector such as the fire
service and the health sector. The Government is
looking to housing associations to provide dwellings
for those who cannot afford to buy.
The Housing Corporation is the key agency regulating
delivery of housing in the social housing sector. They
assist with delivery of policy via grants awarded
through the Approved Development Programme
(ADP). A proportion of the ADP has been ring-fenced
(The Challenge Fund) for the delivery of new homes
quickly and cost effectively, in areas of high demand
(such as London and the south east) as well as
stimulating a step change in supply by encouraging
innovative forms of construction.
Courtesy of FormWorksUK
Building energy efficient buildings using modern methods of construction

What are ‘modern methods of construction’
Modern methods of construction is a collective term
being used to describe a number of new construction
methods that are being introduced into UK house
building that differ significantly from so‐called
‘traditional’ brick and block construction. There is
no precise or universally agreed definition of what
constitutes modern methods, although in 2003 the
Housing Corporation introduced a six-fold classification
system (see right) for describing the construction
methodologies for current house building.
Category 6 describes all traditionally-built dwellings;
hence categories 1 to 5 would be classed as modern
methods of construction.
Each of the construction classes above can be built
using a number of different materials, leading to a
wider range of more specific descriptions, such as
‘volumetric steel frame construction’, timber framed
panellised construction and so on. The most common
materials are timber, steel (in the form of light-gauge
galvanised steel) and concrete, although a range of
composite systems are being introduced also.
Energy efficiency
Whatever the construction form or material, modern
methods are able to produce very energy efficient
dwellings. However, just as in conventional cavity
masonry construction, the overall energy efficiency
of the finished dwelling depends heavily on getting
the original design and specification right. It should
be borne in mind, however, that in the case of
manufactured housing systems the amount of
thermal insulation installed as part of the manufacture
can vary widely – in some systems it will be none but
in other instances will be more than is required to
meet building regulations. It can also vary according to
client specifications.
Housing Corporation construction classification
1 Off-site manufactured – volumetric
Factory-produced three-dimensional units
stacked on site to form the dwelling. Typically
a three bedroomed semi would comprise four
units excluding roof.
2 Off-site manufactured – panellised
Factory-produced flat panel units assembled on
site to produce the three dimensional structure.
3 Off-site manufactured – hybrid
A combination of volumetric and panellised
units in the same structure.
4 Off-site manufactured – sub-assemblies
and components
Factory-produced items not regarded as a
full ‘system’ but replace parts of the structure
normally fabricated on site. Examples would
include pre-fabricated floor and roof cassettes
and dormers.
5 Non off-site manufactured modern
methods of construction
Innovative site-based forms of construction.
Examples would include in-situ concrete
constructions such as tunnel form and
insulating formwork and other site based
systems such as thin joint blockwork.
6 Not applicable (ie ’traditional’)
Some modern methods lend themselves to achieving
high levels of thermal performance simply because
of the way they are made or because of their geometry
and form. Pages 5 to 8 summarise the main forms
of modern method and the attributes that influence
the thermal performance of the dwellings produced
with them.
Building energy efficient buildings using modern methods of construction

Modern methods
Volumetric construction
Panellised timber frame
Figure 1
Volumetric unit being craned into place
Description
Three dimensional units manufactured within a factory.
Units can be made from a range of materials (any
material that can produce a structural panel could be
used to make volumetric units) but most commonly
are framed structures in timber or light gauge steel.
Attributes affecting thermal performance
Volumetric units can be manufactured to be very
airtight. Those based on framed structures can have
insulation installed in the factory. Other attributes
relating to specific panellised structures would
also apply.
Figure 2
Timber fame panel showing factory-applied
window and insulation
Description
Arrangement of studs and rails enclosed within two
sheets of lining material with insulation within. The
stud can either be of solid construction (depth usually
at least 89mm) or of timber I beams (depths usually
150mm or above).
There is some debate within the industry about
whether or not timber frame should be regarded as
a modern method of construction. The amount of
fabrication done in the factory varies but for timber
frame to be regarded as a ‘modern method’ a
manufacturer would need to do substantially more
than supply panels that comprise the studwork and
sheathing board, or incorporate some recent innovation
such as the use of timber I beams. Factory installation
of insulation should produce good quality control.
Panellised construction also tends to lead to more
airtight structures provided they are made accurately.
Attributes affecting thermal performance
Factory installation of windows for example, should
lead to good air-tightness around openings. Systems
based on solid timber studs may be more slender than
those made with timber I beams, and so lead to walls
with more modest thermal performance. I beams are
relatively deep and so will require more insulation to fill
the void, hence be more energy efficient.
Building energy efficient buildings using modern methods of construction

Modern methods
Panellised steel frame
Structural insulated panels (SIPs)
Figure 3
‘Open’ light gauge steel framed panels being erected
(Courtesy of The Forge Company)
Figure 4
Image showing construction of SIP panels
(Courtesy of Kingspan TEK)
Description
Panels of light gauge steel are usually delivered without
insulation or sheet materials (although they can have
insulation factory applied).
Typically the depth of studs would be ~70mm or
greater.
Attributes affecting thermal performance
Panellised construction can produce airtight
structures if panels are accurately manufactured.
Insulation is usually applied to the exterior of steel
frame to produce a ‘warm frame’ construction to
minimise thermal bridges. Additional insulation can be
accommodated between studs to give higher levels of
thermal performance.
Description
SIP panels are a composite of two sheets of lining
material (typically oriented strand board or cement
based boards) bonded to a continuous rigid foam core
to produce a structural panel. The panels need not
contain internal load-bearing studs, although studs are
sometimes included around openings and at corners.
SIP systems sometimes also use the same specification
of panel for roof structures.
Attributes affecting thermal performance
Because there are relatively few studs there are fewer
thermal bridges in SIP panels compared to a framed
panel made from similar materials. They also tend to
be thicker than many framed panels. These factors,
combined with the usual good air-tightness associated
with panellised construction, mean that SIP panels tend
to produce structures that inherently have good thermal
characteristics.
Building energy efficient buildings using modern methods of construction

Modern methods
Composite panels
Tunnel form construction
Figure 5
Composite panel system in use
Description
A number of composite panels are currently in use
which comprise a rigid insulation core within a wire
space frame, all enclosed within a fine aggregate
concrete or render. Openings for windows etc can
be formed in the factory or formed on site by using
a range of different panels (eg special lintel and
spandrel panels).
Attributes affecting thermal performance
The thermal insulation within the panels is not
continuous leading to a significant thermal bridge
at the junction between two adjacent panels. The
systems are therefore usually used in conjunction
with other site‐installed insulation such as cavity
insulation or external wall insulation. The amount
of additional insulation will determine the overall
thermal performance, but the systems are able to
produce high standards of energy efficiency.
Figure 6
Skeletal structure of open-ended bays produced
using tunnel form construction
Description
Tunnel form is a technique to produce internal
walls and floors using cast in-situ concrete. External
walls (apart from the side walls) are constructed
using other techniques, which can be conventional
cavity masonry, or framed infill panels. Construction
detailing would be similar to crosswall and concrete
frame constructions. The walls would be cast onto
prepared foundations comprising typically a beam
and block ground floor.
Attributes affecting thermal performance
The thermal efficiency of structures produced using
tunnel form is determined largely by the specification
of the infill structure, which is not normally classed
as part of the system and is usually commissioned
separately. The dwellings have the potential to be
very airtight, and the extensive use of concrete will
yield structures of high thermal mass.
Building energy efficient buildings using modern methods of construction

Modern methods
Insulating formwork
Aircrete block and plank
Figure 7
Insulating formwork with reinforcement ready for
concrete pour
Description
Insulating formwork uses two layers of rigid foam
as permanent shuttering for a reinforced concrete
wall. The insulation can be in the form of two sheets
of rigid foam tied together, or in the form of large
hollow blocks.
Attributes affecting thermal performance
The fact that the finished structure has a continuous
layer of foam (usually polystyrene) internally and
externally means that thermal bridges are effectively
eliminated from areas of plain walling. The structures
are very airtight.
Figure 8
Aircrete blocks and planks being used to form walls
and intermediate floor of a dwelling
Description
Aircrete has been in use for many years in blockwork,
but a recent innovation is the use of thin joint
techniques, where a thin (4mm) layer of special
adhesive replaces the normal relatively thick mortar
joint. Large planks of reinforced aircrete can also be
used to produce both ground and intermediate floors,
and also to create a pitched roof structure.
Attributes affecting thermal performance
To achieve good levels of energy efficiency
aircrete would usually be used in conjunction with
supplementary insulation (either as part of cavity
masonry or as external insulation to a solid aircrete
wall). The thin joint system is beneficial because there
is a much lower cross section of mortar acting as a
thermal bridge.
Building energy efficient buildings using modern methods of construction

Costs and conclusions
The build costs of dwellings will be influenced by
many factors including:
• The number of dwellings.
• The size and built form.
• The level of energy efficiency attained.
• The construction technology.
The conclusion from the case studies presented is that
high levels of energy efficiency are readily achievable
with a range of modern methods. Although costs
vary widely between the schemes, the range is in line
with current costs for new-build housing indicating
that using modern methods of construction can
deliver higher energy efficiency standards, whilst still
remaining cost competitive.
• The standard of finishes.
• Amenity levels provided.
• Infrastructure costs.
It is therefore very difficult to draw any firm conclusions
by comparing the costs of different schemes. In the
case studies below cost data are reported, although
it has not been possible to check whether the costs
quoted have been calculated on an equivalent basis.
The scale of the projects varies widely, from a single
dwelling to several hundred dwellings, with similar
differences in terms of the associated infrastructure
works. The relative costs for the different projects
should not, therefore, be interpreted as being
indicative of the relative costs of the different
construction technologies.
Building energy efficient buildings using modern methods of construction

Case study 1: Tunnel form in-situ concrete
(Millennium Plus at the Nightingale)
Millennium Plus at the Nightingale is a new build development by
Southern Housing Group using tunnel form construction. The structure
of the dwellings is formed by casting open-ended concrete bays against
re-usable steel shutters, the bays being closed with highly insulated
factory-produced timber framed panels. Cladding is a conventional
brick outer leaf. The scheme was started in 2000 and the first phase
completed in 2001. Later phases are still under construction.
Standards of energy efficiency have consistently exceeded the
requirements of building regulations, and the phase currently under
construction (phase 7B and C) is producing flats with a typical Carbon
Index of 9 or above.
Key features
Figure 9
Completed dwellings on the Nightingale development
built using tunnel form
Figure 10
Dwellings under construction on the Nightingale
development
Client
Contact
Architect
Construction
Ground floor
External walls
Roof
Windows
Heating
Southern Housing Group
Jill Beaver, Project Manager
Tel 08456 120 021
Watkins Gray International LLP
Suspended beam and block floor with 50mm
foil-faced insulation over plus 70mm reinforced
sand/cement screed. U-value 0.2 – 0.25W/m 2 K
(depending on exposed perimeter.)
Side walls brick, cavity, 50mm foil-faced urethane
insulation 150mm reinforced concrete.
U-value 0.3W/m 2 K
Front and rear walls Brick, cavity, insulated timber
frame infill panels (89mm deep studs fully filled
with phenolic foam) U-value 0.27W/m 2 K
Prefabricated roof cassettes to pitched roof
U-value 0.25W/m 2 K
Softwood with double glazed units
U-value range 1.3 to 1.7W/m 2 K
Gas condensing combination boilers
(SEDBUK 90 per cent) with interlock, radiators,
thermostatic radiator valves, room stat, programmer
Carbon Index 8.5 – 9.5
Build costs
£1,621 per m 2 average including all circulation
and infrastructure, excluding fees.
10 Building energy efficient buildings using modern methods of construction

Case study 2: Panellised light gauge steel frame
(Oakridge Estate, Basingstoke)
Oakridge, a development of 299 dwellings for Sentinel Housing Group, utilised
light gauge steel frame panellised construction for the first two phases (total of
157 dwellings). The homes, constructed by Forge Llewellyn from steel frames
manufactured by Ayrshire Steel Framing, share standardised layouts – visual
variety was achieved externally by incorporating a variety of physical features
(such as bays, dormers and balconies) along with a variety of finishes (different
coloured renders, brick and timber cladding). Dormers and balconies were also
prefabricated in glass reinforced plastic (GRP).
Feedback from tenants has been very positive, with reported fuel savings of up
to £30 per month compared to their previous dwellings.
Key features
Client
Contact
Architect
Construction
Ground floor
External walls
Roof
Windows
Heating
Sentinel Housing Group Ltd
Greg Dickson
Tel 0800 195 5515
greg.dickson@shgl.org.uk
HTA
Insulated reinforced concrete slab with edge insulation.
U-value 0.16 – 0.18W/m 2 K (depending on exposed
perimeter.)
Warm steel frame construction as follows:
Brick or rendered block / cavity / 53mm insulation board
/ 100mm infill insulation to steel studs.
U-value 0.26W/m 2 K
Pitched roof (insulation between rafters)
U-value 0.20W/m 2 K
Pitched roof (insulation between joists)
U-value 0.16W/m 2 K
Low-e double glazing Argon filled (90 per cent)
U-value 1.5W/m 2 K
Gas condensing standard or combination boilers
(SEDBUK 90 per cent) with interlock, radiators, TRVs,
room and cylinder stats, 5+2 day programmer.
Ventilation is via passive stack.
Figure 11
Oakridge dwellings shortly after completion
Figure 12
Oakridge estate under construction
(Courtesy of Sentinel Housing Group)
Carbon Index 8.5 – 9.6
EcoHomes
Build costs
Good
£1,215 per m 2 . This is ~5-10 per cent higher than traditional
masonry construction, but is built to higher standards of
energy efficiency. Greg Dickson of Sentinel says ‘costs
should be compared on a whole life basis – over a
period of 30 years the steel frame would be cost‐neutral
compared to traditional construction’.
Building energy efficient buildings using modern methods of construction 11

Case study 3: Super E timber frame
(North Bersted)
Super E is a Canadian standard yielding dwellings with high standards of
thermal insulation and airtightness. Kelsey Housing Association decided to
pilot the system on a detached family home within a development of nine
properties. The components for the house structure were supplied to the UK
construction company (Geoffrey Osborne Ltd) by Canadian manufacturer
Alouette Homes, who also sent a team to the UK to train Osborne staff in the
relevant assembly techniques.
High standards of airtightness are achieved by careful detailing of the external
breather paper, ensuring that there are no gaps and sealing all joins. Positive
feedback has been given by the occupier who is very happy with the house in
terms of quality, running costs and air quality. Noise levels from outside are also
reported to be especially good.
Key features
Figure 13
Completed house
(Courtesy of Kelsey Housing Association)
“We used the Super E system because it
offers cost savings to the housing association
combined with improvements in quality of
life for residents and reduced impact on the
environment”
– Andrew Fellows, Chief Executive of Kelsey
Client
Architect
Construction
Ground floor
External walls
Roof
Windows
Air pressure test
Heating
Kelsey Housing Association
Miller Hughes
Concrete beam floor system with power-floated screed.
U-value 0.27W/m 2 K
Super E timber frame system with brick outer leaf.
U-value 0.28W/m 2 K
Pitched roof
U-value 0.14W/m 2 K
U-value 1.8W/m 2 K
1.41 ac/h@50Pa
Gas condensing combination boiler (SEDBUK 90.9 per cent)
with heat recovery ventilation system.
Carbon Index 8.3
Build costs £723 per m 2
Figure 14
Super E house under construction showing careful
detailing of vapour control layer
(Courtesy of Kelsey Housing Association)
12 Building energy efficient buildings using modern methods of construction

Case study 4: Hybrid steel frame
(Georgian Gardens)
This project by Black Country Housing and Community Services Group Ltd
was a pair of semi-detached bungalows for elderly people. The main structure
was from steel frame cassettes in conjunction with a combined kitchen and
bathroom module in volumetric construction. The construction system used
enabled a weather tight structure in three days. Services in the kitchen/bathroom
module were factory installed.
The manufacturers of the steel frame components (Renaissance Enlightened
Building Ltd) also acted as project manager and contractor. The bungalows have
a range of enhancements and innovative features including Lifetime Homes
features such as hoist-ready ceilings, knock-out panels for flexibility, level access
showers, doors to ‘secured-by-design’ standard and an insulated fridge space
which also provides heat for the draught lobby.
Key features
Client
Contact
Architect
Construction
Ground floor
External walls
Roof
Windows
Air pressure test
Heating
Black Country Housing and Community
Services Group Ltd
Richard Baines, Senior Environmental Consultant
Tel 0121 561 1969
bainesr@bcha.co.uk
Renaissance Enlightened Building
Solid concrete floor to all areas except kitchen and
bathroom modules which have integral steel joisted floors.
U-value 0.2W/m 2 K
Brick outer leaf, cavity, 75mm partial fill mineral fibre batts,
steel frame with factory-applied 80mm high performance
foamed plastic insulation board.
U-value 0.17W/m 2 K
Warm pitched roof from pre-fabricated steel-framed roof
cassettes. U-value 0.17W/m 2 K
Low-e, Argon filled aluminium-clad timber windows with
humidity-sensitive trickle vents.
U-value 1.8W/m 2 K
Not carried out
Gas condensing combination boiler (SEDBUK A – rated
– 90.1 per cent) feeding wet radiators. Full suite of controls.
Figure 15
Completed bungalows
(Courtesy of Black Country Housing and Community Services Group Ltd)
Figure 16
Bungalows under construction showing steel frame
(Courtesy of Black Country Housing and Community Services Group Ltd)
Carbon Index 8.3
Build costs
Build costs were ~£900 per m 2 which includes many
additional items such as features relating to Lifetime Homes
and Secured by Design and other innovations developed by
Black Country Housing such as insulated fridge spaces.
Building energy efficient buildings using modern methods of construction 13

Case study 5: Structural insulated panel
(Sompting, Sussex)
This development, a terrace of three houses constructed entirely from SIP panels, was
part of a trial to compare SIP construction with standard timber frame. Osborne Homes
started to explore the possibility of using SIPs as an alternative to timber frame when
demand for the latter outstripped supply thus restricting the number of units the builder
could build. They developed the ‘Jabhouse’ whole house system with SIP manufacturer
Vencel Resil.
Figure 17
Dwellings shortly after completion
(Courtesy of Osborne Homes)
The aim was to compare SIP and timber frame constructions from the viewpoint of
cost and speed of erection. Four standard timber frame dwellings were built adjacent to
the SIPs dwellings so that real comparisons could be made. Both types of house were
constructed on an insulated concrete base. Despite delays on the SIP panel (due to the
proximity of overhead power lines rather than the use of SIP technology), the timber
framed dwellings were erected in nine days and the SIP dwellings were erected in four
days . Osborne Homes believe that in future schemes a SIP house will take a day to
install rather than two for timber frame, and the design process will also be simpler. As
far as cost is concerned Osborne report that both systems cost the same but the SIP
system offers additional environmental benefits including building performance.
Key features
Client
Contacts
Southern Housing Group
Keith MacDonald, Development Officer
Tel 01403 224877
keith.macdonald@shgroup.org.uk
Figure 18
SIP panels under erection
(Courtesy of Osborne Homes)
Architect
Construction
Ground floor
External walls
Roof
Party walls
Windows
Colin Mitchell, Business Development Director, Osborne Homes
Tel 01243 787811
Martin Critchell
Concrete beam with EPS infill blocks with a power floated screed.
U-value 0.20W/m 2 K (depending on exposed perimeter)
Pre-finished cladding, drained and ventilated cavity, 154mm SIP
panel with 130mm Expanded Polystyrene core.
U-value 0.23W/m 2 K
Prefabricated SIP roof cassettes (Jabroof Slimfix) to pitched roof with
room in the roof U-value 0.20W/m 2 K
Reducing the heat loss to neighbours in terraced housing
U-value 0.18W/m 2 K
U-value 1.60W/m 2 K
Air pressure test 5.16m 3 /hr/m 2
Heating
Gas combination boilers (SEDBUK 91.2 per cent), small radiators,
TRVs, 3m 2 solar water collectors. Ventilation is via passive stack
Carbon Index 9.1
EcoHomes
Build costs
Very Good
£1,015 per m 2 (same as the equivalent timber framed dwelling)
14 Building energy efficient buildings using modern methods of construction

Case study 6: Timber I beam ‘zero heating’ home
(Peterculter)
This single detached dwelling is the result of a research programme and was
designed by Gökay Deveci in collaboration with Robert Gordon University
and Aberdeen City Council. The aim of the project was to deliver radical
environmental improvements over current standard housing, in particular to
remove the need for a dedicated heating system. The final development, for
a private client, was completed in 1999. The construction is of highly insulated
timber I beams with recycled newsprint insulation for both the roof and walls.
The house is built on a highly insulated concrete floor. The concrete floor
provides thermal mass to even out temperature swings.
Figure 19
The designer has incorporated a range of environmental features
(environmentally friendly materials such as locally-grown Scottish larch cladding,
Krypton-filled triple glazing, solar panels for heating hot water and passive
solar design). The design was optimised using a life cycle cost analysis, and
thermal imaging was undertaken to confirm the quality of the insulation etc.
Build costs £405 per m 2
The only heating source in the dwelling is a wood-burning stove to be used as
a backup. The performance of the dwelling was monitored over a six month
Completed zero heating home
(Courtesy of Gökay Devici)
period covering the coldest part of winter and some of the warmest parts of
summer. Based on the results of the monitoring annual space heating bills are
estimated to be no more than £45.
Key features
Client
Private client
Architect Gökay Deveci
Contact Gökay Deveci
Tel 01224 263714
g.devici@rgu.ac.uk
Construction
Ground floor 200mm rigid insulation under concrete base
U-value 0.13W/m 2 Figure 20
K (estimated)
Zero heating house under construction showing
External walls Timber frame (I beam) with 300mm recycled newsprint
insulation. U-value 0.11W/m 2 K
timber I beams
(Courtesy of Gökay Devici)
Roof
Pitched roof, timber I beam with 400mm recycled
newsprint insulation. U-value 0.1W/m 2 K (estimated)
Windows Triple glazed with Low-e coating and Krypton gas.
U-value 0.15W/m 2 K (estimated)
Heating Wood burning stove for backup only – no other heating
system. Ventilation via mechanical ventilation with heat
recovery
Carbon Index 10
Building energy efficient buildings using modern methods of construction 15

CE139
Further information
The Energy Saving Trust offers information on energy efficiency, sets standards for the housing industry and
provides technical guidance, tools and training on how to meet those standards. The standards, covering
Good Practice, Best Practice and Advanced Practice, provide an integrated package of measures for all
aspects of new build and refurbishment.
For more information call 0845 120 7799 or visit www.est.org.uk/housingbuildings
The following publications may be of interest
Energy Efficiency in New Housing: Summary of Specifications for England, Wales and Scotland (CE12)
Energy Efficiency in New Housing: Summary of Specifications for Northern Ireland (CE24)
Renewable energy in housing – case studies (CE28)
Innovative social housing – case study (CE37)
Thamesmead Ecopark – case study (CE130)
Energy Saving Trust 21 Dartmouth Street, London SW1H 9BP Helpline 0845 120 7799 Fax 0845 120 7789
bestpractice@est.org.uk www.est.org.uk/housingbuildings
CE139 © Energy Saving Trust August 2005. E&OE
All technical information was produced by BRE on behalf of the Energy Saving Trust
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