Apollo Insulation Ltd APOLLO FOILS THERMO

APPROVAL
INSPECTION
TESTING
CERTIFICATION
Apollo Insulation Ltd
P O Box 200
Horley
Surrey RH6 7FU
Tel: 01293 776974 Fax: 01293 776975
TECHNICAL APPROVALS FOR CONSTRUCTION
Agrément Certificate
08/4576
e-mail: [email protected]
website: www.apollo-energy.com
Product Sheet 1
APOLLO FOILS
THERMO-FOIL ES/THERMO-BRITE III, THERMO-FOIL, ECO-BRITE AND TAPE
This Agrément Certificate Product Sheet (1) relates to
Thermo-Foil ES/Thermo-Brite III, Thermo-Foil, Eco-Brite
and Tape, composite, reflective films for use in roofs,
ceilings, walls and floors to provide thermal resistance to
the structure.
(1) Hereinafter referred to as ‘Certificate’.
CERTIFICATION INCLUDES:
• factors relating to compliance with Building
Regulations where applicable
• factors relating to additional non-regulatory
information where applicable
• independently verified technical specification
• assessment criteria and technical investigations
• design considerations
• installation guidance
• regular surveillance of production
• formal three-yearly review.
KEY FACTORS ASSESSED
Thermal performance — the products can contribute to reducing the thermal transmittance of walls, floors, roofs and
ceilings (see section 6).
Risk of condensation — the products can provide effective control to the passage of water vapour (see section 7).
Durability — under normal conditions the products will have a life equal to the life of the building in which they are
installed (see section 14).
The BBA has awarded this Certificate to the company named above for the products described herein. These
products have been assessed by the BBA as being fit for their intended use provided they are installed, used and
maintained as set out in this Certificate.
On behalf of the British Board of Agrément
Date of Second issue: 24 October 2013
John Albon — Head of Approvals
Claire Curtis-Thomas
Originally certificated on 17 July 2008
Energy and Ventilation
Chief Executive
The BBA is a UKAS accredited certification body — Number 113. The schedule of the current scope of accreditation for product certification is
available in pdf format via the UKAS link on the BBA website at www.bbacerts.co.uk
Readers are advised to check the validity and latest issue number of this Agrément Certificate by either referring to the BBA website or contacting the BBA direct.
British Board of Agrément
Bucknalls Lane
Watford
Herts WD25 9BA
©2013
Page 1 of 13
tel: 01923 665300
fax: 01923 665301
e-mail: [email protected]
website: www.bbacerts.co.uk
Regulations
In the opinion of the BBA, Thermo-Foil ES/Thermo-Brite III, Thermo-Foil, Eco-Brite and Tape, if installed, used and
maintained in accordance with this Certificate, will meet or contribute to meeting the relevant requirements of
the following Building Regulations (the presence of a UK map indicates that the subject is related to the Building
Regulations in the region or regions of the UK depicted):
The Building Regulations 2010 (England and Wales) (as amended)
Requirement: C2(a)(c)
Resistance to moisture
Comment:
Requirement: L1(i)
Conservation of fuel and power
Comment:
Regulation:
7
Materials and workmanship
Comment:
Regulation:
26
CO2 emission rates for new buildings
The products can contribute to meeting this Requirement. See sections 7.1 and 7.5 of this Certificate.
The products can contribute to meeting this Requirement. See sections 6.1 and 6.3 of this Certificate.
The products are acceptable. See section 13 and the Installation part of this Certificate.
The products can contribute to meeting this Regulation. See sections 6.1 and 6.3 of this Certificate.
Comment:
The Building (Scotland) Regulations 2004 (as amended)
Regulation:
8(1)
Fitness and durability of materials and workmanship
Comment:
Standard:
3.15
Condensation
The products are acceptable. See section 13 and the Installation part of this Certificate.
The products can contribute to satisfying this Standard, with reference to clauses 3.15.1(1), 3.15.3(1) to
3.15.5(1) and 3.15.7(1). See sections 7.1 and 7.6 of this Certificate.
Comment:
Standard:
Standard:
6.1(a)(b)
6.2
The products can contribute to satisfying clauses, or parts of, 6.1.1(1) to 6.1.3(1), 61.6(1), 6.2.1(1), 6.2.3(1)
to 6.2.7(1), 6.2.9(1) to 6.2.11(1) and 6.2.13(1) of these Standards. See sections 6.1 and 6.3 of this
Certificate.
Comment:
Standard:
7.1(a)(b)
Statement of sustainability
The products can contribute to meeting the relevant requirements of Regulation 9, Standards 1 to 6
and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this
Standard. In addition, the products can contribute to a construction meeting a higher level of sustainability
as defined in this Standard, with reference to clauses 7.1.4(1) [Aspects 1(1) and 2(1)], 7.1.6(1) [Aspects 1(1)
and 2(1)] and 7.1.7(1) [Aspect 1(1)]. See section 6.3 of this Certificate.
Comment:
Regulation:
Carbon dioxide emissions
Building insulation envelope
12
Building standards applicable to conversions
All comments given for these products under Regulation 9, Standards 1 to 6 also apply to this Regulation,
with reference to clause 0.12.1(1) and Schedule 6(1).
Comment:
(1) Technical Handbook (Domestic).
The Building Regulations (Northern Ireland) 2012
Regulation:
23
Fitness of materials and workmanship
Comment:
Regulation:
29
Condensation
Comment:
Regulation:
Regulation:
39(a)(i)
40(2)
Conservation measures
Target carbon dioxide emission rate
Comment:
The products are acceptable materials. See section 13 and the Installation part of this Certificate.
The products can contribute to meeting this Regulation. See section 7.1 of this Certificate.
The products can contribute to satisfying these Regulations. See sections 6.1 and 6.3 of this Certificate.
Construction (Design and Management) Regulations 2007
Construction (Design and Management) Regulations (Northern Ireland) 2007
Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address their
obligations under these Regulations.
See section:
1 Description (1.3) of this Certificate.
Additional Information
NHBC Standards 2013
NHBC accepts the use of Thermo-Foil ES/Thermo-Brite III, Thermo-Foil, Eco-Brite and Tape, when installed and used
in accordance with this Certificate, in relation to NHBC Standards, Chapter 7.2 Pitched roofs, Chapter 6.1 External
masonry walls and Chapter 6.2 External timber framed walls and Chapter 5.2, Suspended ground floors.
Page 2 of 13
Technical Specification
1 Description
1.1 Thermo-Foil ES/Thermo-Brite III, Thermo-Foil, Eco-Brite and Thermo-Foil Tape comprise a coated reflective
metallised polyester, laminated to each side of a polyethylene film. Thermo-Foil ES and Thermo-Brite III offer enhanced
tensile strengths due to different thicknesses. In all applications, the products can be used interchangeably.
1.2 Laps are sealed with the Tape (a metallised film with pressure-sensitive acrylic adhesive).
1.3 The products are available in roll form with the following nominal properties (see Table 1).
Table 1 Nominal characteristics
Product type
Characteristics (units)
Thermo-Foil ES/Thermo-Brite III
Thermo-Foil
Eco-Brite
Width (m)
1.25
1.25
1.25
Length (m)
96
96
96
18
15.36
18.72
Roll weight (kg)
Tensile strength (kN·m )
–2
Working temperature (°C)
Emissivity (outer foil)
6.62
6.28
3.81
–30 to + 120
–30 to + 120
–30 to + 120
0.05
0.05
0.05
1.4 The products are secured in place by:
• nails or staples — for timber constructions
• self-drilling screws with bonded washers — for metal and/or steel constructions.
2 Manufacture
2.1 The products comprise a multi-layered sheet material made up of metallised polyester laminated to (cross
bonded) 75 micron (Thermo-Foil) or 100 micron (Thermo-Foil E and Eco-Brite) low density polyethylene (LDPE) and then
laminated to a metallised polyester. The outer surfaces of the laminate are coated with a thin layer of lacquer.
2.2 As part of the assessment and ongoing surveillance of product quality, the BBA has:
• agreed with the manufacturer the quality control procedures and product testing to be undertaken
• assessed and agreed the quality control operated over batches of incoming materials
• monitored the production process and verified that it is in accordance with the documented process
• evaluated the process for management of nonconformities
• checked that equipment has been properly tested and calibrated
• undertaken to carry out the above measures on a regular basis through a surveillance process, to verify that the
specifications and quality control operated by the manufacturer are being maintained.
2.3 The management system of the manufacturer has been assessed and registered as meeting the requirements of
BS EN ISO 9001 : 2008 by ACS Registrars Ltd (Certificate 130224).
3 Delivery and site handling
3.1 The products are delivered to site in rolls protected with foam, packed in clear polythene and sealed at each end.
Every roll has an identification label on the outer packaging which includes a batch number for traceability.
3.2 The rolls should be stored in clean, dry conditions out of sunlight. The products must not be dropped or crushed.
3.3 To ensure maximum performance of the products when installed, precautions must be taken to protect them from
dirt on site.
3.4 When installing in bright sunlight, dark glasses should be worn.
Assessment and Technical Investigations
The following is a summary of the assessment and technical investigations carried out on Thermo-Foil ES/Thermo Brite III,
Thermo-Foil, Eco-Brite and Tape.
Page 3 of 13
Design Considerations
4 General
4.1 Thermo-Foil ES/Thermo-Brite III, Thermo-Foil and Eco-Brite and Tape provide thermal resistance of adjacent
airspace in new or existing dwellings and buildings of similar occupancy, type and condition. Additional insulation will
be required in order to meet the thermal requirements of the national Building Regulations.
4.2 The use of the products does not in itself promote infestation and there is no food value in the materials used. The
creation of voids within the structure, ie gaps between the lining and the sheet, may provide habitation for insects or
vermin in areas already infested and such infestation may be difficult to eradicate.
4.3 Plasterboard used in conjunction with the products must comply with BS EN 520 : 2004 and be installed in
accordance with BS 8212 : 1995.
4.4 Penetration of the products by services should be kept to a minimum and sealed to limit water vapour penetration.
Masonry and timber frame walls
4.5 The wall or sub-frame must be structurally sound, designed and constructed in accordance with the following
standards.
Masonry
• BS EN 1996-1-1 : 2005
• BS EN 1996-2 : 2006.
Timber
• BS EN 1995-1-1 : 2004
• BS EN 351-1 : 1996.
4.6 Existing walls must be in a good state of repair with no evidence of rain penetration, damp or frost damage.
Pitched roof
4.7 The products are for use in constructions where the ceiling follows the pitch of the roof and encloses a habitable
space. They are fitted above the rafters and must be installed in accordance with BS 5250 : 2011 and the Certificate
holder’s instructions.
4.8 Roofs must be constructed and tiled or slated in accordance with the BS 5534 : 2003.
4.9 Due to the reflective finish on the products, distortion of television reception may occur when using an aerial in the
roof space. External aerials will not be affected.
4.10 The products can also be used underneath existing insulation in a metal roof construction, in accordance with
BS 5427-1 : 1996.
Ceilings — lofts
4.11 In lofts the products can be used at ceiling level below joists providing thermal resistance to the structure and
also preventing water vapour from entering.
Floors
4.12 The products are suitable for use with ground supported, suspended, exposed and semi-exposed concrete and
timber floors, suspended ground floors must include suitable ventilation or a dpm.
4.13 The floor finish should be installed in accordance with EN 12871 : 2010.
5 Practicability of installation
The products are designed to be installed by a competent general builder, or a contractor, experienced with these
types of products.
6 Thermal performance
6.1 Calculations of thermal transmittance (U value) should be carried out in accordance with BS EN ISO 6946 :
2007 and BRE Report BR 443 : 2006 using the following values for the outer foil of the products Thermo-Foil
ES/Thermo-Brite III, Thermo-Foil, Eco-Brite and Tape:
•
•
•
•
0.05 outer surface emissivity of the products
0.45(1)(2) m2·K·W–1
R value of an air cavity adjacent to the products 13 mm thick (upward heat flow)
(1)(2)
2
–1
0.66
m ·K·W
R value of an air cavity adjacent to the products 20 mm thick (horizontal heat flow)
(1)(2)
2
–1
1.33
m ·K·W
R value of an air cavity of 50 mm thick, adjacent to the products (downwards heat flow)
(1) Unventilated cavity with a width and length at least 10 times the thickness and one high emissivity surface.
(2) For guidance on U value calculations refer to the BBA Information Bulletin No 3.
Page 4 of 13
6.2 The U value of a completed element will depend largely on the thickness and conductivity of the additional
insulation used in conjunction with the products and the extent and arrangement of timber bridging. Example roof,
wall and floor constructions are shown in Figures 2, 3, 4 and 6 and the resulting U values are shown in Tables 2 to 4
respectively.
Table 2 U values for pitched roof constructions
Construction
Total rafter depth
(mm)
Batten depth
(mm)
Additional insulation
thickness(1)
(mm)
U value
(W·m–2·K–1)(2)
Existing roof(3)
200
25
200 mm in
between rafters
0.21
New roof(4)
200
25
200 mm in between
rafters and 60 mm
above.
0.14
(1) Mineral wool insulation (conductivity 0.038 W·m–1·K–1) in increments of 5 mm.
(2) Assumes ⌬Ug = 0, ie no gaps exceeding 5 mm width penetrating the insulation layer.
(3) 1 2.5 mm plasterboard internal finish. Rafters at 400 mm centres
(4) 12.5 mm plasterboard internal finish. Rafters at 600 mm centres and a low emissivity roof space (R = 0.3 m2 K·W–1, see
section 5.4.2 of EN ISO 6946 : 2007).
Table 3 U values for wall constructions
Construction
Additional insulation
thickness(1)
(mm)
U value
(W·m–2·K–1)
Brick wall(1)
85
0.28
140
0.19
89
89 between studs and
20 between battens
0.30
89
89 between studs and
30 between battens
0.28
140 between studs and
60 between battens
0.19
Stud depth
(mm)
Timber frame wall(2)
140
(1) 215 mm brickwork outer leaf, foil-faced PIR or PUR insulation (conductivity = 0.023 W·m–1·K·–1 and emissivity 0.2)
between battens (11.8% bridging) with a 25 mm air space maintained between the insulation and the product. 12.5 mm
plasterboard internal finish.
(2) 102.5 mm brickwork outer leaf, 50 mm unventilated cavity, 12 mm OSB sheathing, mineral wool insulation (conductivity =
0.038 W·m–1·K·–1) between studs and battens (11.8% bridging) with a 25 mm air space maintained between the insulation
and the product. 12.5mm plasterboard internal finish.
Table 4 U values for floor construction
P/A ratio
U value(1)
(timber suspended floor, 50 mm air gap)
(W·m–2·K–1)
0.2
0.18
0.4
0.21
0.6
0.23
0.8
0.24
1.0
0.24
(1) 150 mm timber joist with 100 mm mineral wool insulation (conductivity
0.038 W·m–1·K·–1) and a 50 mm low emissivity airspace above the
insulation. 18 mm chipboard internal finish.
Page 5 of 13
6.3 The products can contribute to maintaining, continuity of thermal insulation at junctions between elements.
For Accredited Construction Details the corresponding psi values in BRE Information Paper IP 1/06, Table 3
may be used in carbon emission calculations in Scotland and Northern Ireland. Detailed guidance for other
junctions and on limiting heat loss by air infiltration can be found in:
England and Wales — Approved Documents to Part L and for new thermal elements to existing buildings, Accredited
Construction Details (version 1.0). See also SAP 2009 Appendix K and the iSBEM User Manual for new-build
Scotland — Accredited Construction Details (Scotland)
Northern Ireland — Accredited Construction Details (version 1.0).
7 Risk of condensation
Interstitial condensation
7.1 Roofs (with the products at joist level and/or above rafter level), walls and floors incorporating the products,
depending on constructions can adequately limit the risk of interstitial condensation when designed and
constructed in accordance with BS 5250 : 2011, Annexes D and F to H.
7.2 Consideration must be taken in the overall installation to minimise perforations by services. Joints at wall/ceiling
and wall/floor level must be well sealed to offer significant resistance to water vapour transmission.
7.3 As with other types of insulation applied to the inside of a wall, there may be a risk of cold bridging from the
floors or ceilings, particularly in concrete slab construction.
7.4 When the products are used in conjunction with sarking boards (insulating or otherwise) an appropriate ventilation
gap between the underlay and the sarking boards must be maintained.
Surface condensation
7.5 Roofs (with the products at joist level and/or above rafter level), walls and floors can adequately limit the
risk of surface condensation when the thermal transmittance (U value) does not exceed 0.35 W·m–2·K–1 (roofs) or
0.7 W·m–2·K–1 (walls or floors) at any point and the junctions with walls are designed in accordance with
section 6.3 of this Certificate.
7.6 Roofs (with the products at joist level and/or above rafter level), walls and floors can adequately limit the
risk of surface condensation when the thermal transmittance (U value) does not exceed 1.2 W·m–2·K–1 at any
point and designed in accordance to BS 5250 : 2011, Annexes F to H. Further guidance may be obtained
from BRE Report BR 262 : 2002.
8 Strength
The products, when installed in a roof application, accordance with the Certificate holder’s instructions, will resist the
loads likely to be met during installation and in service.
9 Properties in relation to fire
When tested the products achieved the ratings shown in Table 5.
Table 5 Fire propagation and surface spread of flame ratings on aluminium side (printed side)
Characteristics (units)
BS 476-6
propagation index (I)
sub-index (i1)
BS 476-7
surface spread rating
Product type
Thermo-Foil ES/Thermo-Brite III
Thermo-Foil
Eco-Brite
5.8
5.9
7.7
4.6
4.2
5.8
Class 1
Class 1
Class 1
10 Proximity of flues and appliances
When the products are installed in close proximity to certain flue pipes and/or heat-producing appliances, for
buildings subject to national Building Regulations, the relevant provisions and guidance given below should be met:
England and Wales — Approved Document J, paragraph 2.15
Scotland — Mandatory Standard 3.19, clauses 3.19.1(1) to 3.19.9(1)
(1) Technical Handbook (Domestic).
Northern Ireland — Technical Booklet L, paragraph 2.9.
Page 6 of 13
11 Moisture penetration
The products will resist the passage of water, wind-blown snow and dust into the interior of a building under all
conditions to be found in a roof constructed to BS 5534 : 2003.
12 Maintenance
As the products are confined within a structure and have suitable durability (see section 14), maintenance is not
required.
13 Durability
The products are rot-proof, do not tear easily and will have a life equal to that of the building in which they are
installed.
Installation
14 General
14.1 Installation of Thermo-Foil ES/Thermo-Brite III, Thermo-Foil, Eco-Brite and Tape must be in accordance with the
Certificate holder’s instructions. Typical installation details are shown in Figures 1 to 6. Damaged or torn products must
not be used and should be discarded.
Figure 1 Block cavity wall
board/fibre insulation
block work
clear cavity
air space minimum 19 mm
outer brick work
Thermo-Foil ES
or Eco-Brite
timber batten
plasterboard
Figure 2 Timber frame cavity wall
timber batten
outer brick work
wood sheathing
air space minimum 19 mm
clear cavity
insulation quilt
Thermo-Foil ES
or Eco-Brite
plasterboard
Page 7 of 13
Figure 3 Masonry wall (refurbishment)
Figure 4 Pitched roof (with inhabitable loft space)
air space minimum 19 mm
plasterboard
timber battens
Thermo-Foil tape at overlaps,
wall to floor, wall to ceiling etc
Thermo-Foil ES or Eco-Brite
mineral wool or similar insulation
mineral wool or similar insulation
timber battens
air space minimum 19 mm
Thermo-Foil ES or Eco-Brite
plasterboard
Page 8 of 13
Figure 5 Ceiling
Figure 6 Concrete ground supported floor
Eco-Brite
floor boarding
Thermo-Foil tape
air space
timber batten
concrete floor
14.2 During construction, care must be taken to ensure the products are not damaged during installation. Should
damage occur by tearing, the products must be repaired or replaced.
14.3 Joints, overlaps, areas around details and isolated puncture areas must be sealed with the Thermo-Foil Tape.
14.4 Prior to installing the products, where applicable sufficient time must be allowed for the dispersion of solvents
contained in some wood preservatives and damp-proofing treatments.. Backgrounds should be allowed to dry out
before installation.
14.5 The products must be fixed on the warm side of the insulation, covering all the internal area, including joists,
rafters, rails, studs, noggings, window reveals, lintels and sills. All joints should coincide with battens, stubs or
noggings, be lapped by at least 50 mm and sealed with tape.
14.6 Flues must be appropriately sleeved where they penetrate the products.
15 Procedure
Walls and ceilings
15.1 The products are rolled out to the required length and starting from the bottom and working upwards fixed into
position, either nailed or stapled to timber battens/studs or by using self-drilling screws with bonded washers for metal
constructions. Fixings should be at 250 mm maximum centres. Typical installation details are shown in Figures 1 to 5.
15.2 All joints should coincide with battens, metal furrings, studs and noggings and be lapped by at least 50 mm and
sealed with the tape provided.
15.3 The products are cut and neatly fitted around door and window frames, and trimmed and fitted into corners.
15.4 Holes are cut neatly into the products to allow for services such as plumbing and electrical wiring to penetrate.
Any cuts and gaps aresealed with Thermo-Foil Tape.
15.5 The products must not cover ventilation sleeves and grilles.
Page 9 of 13
Floors
15.6 The products are laid over the floor and sealed with the tape to ensure that the total floor area is covered.
Sufficient amounts of the products must protrude in order that they are held behind the skirting board (see Figure 6).
15.7 Timber battens, 19 mm or 25 mm by 38 mm, are installed and fixed through the membrane into the concrete
floor.
Suspended timber and suspended concrete ground floors
15.8 The products can be used on a beam and block suspended concrete floor that is the subject of a current
Agrément Certificate and installed in accordance with, and within the limitations imposed by, that Certificate.
15.9 The products are fixed over the floor joists and/or battens, in the case of a timber raft, allowing an air gap
between the products and insulation. Tongue-and-groove particle board flooring, softwood floor boarding or a
specified finish flooring is then installed in the conventional manner (see Figure 7).
15.10 All laps must be a minimum of 100 mm. Laps, cut edges and roll ends are sealed with the Thermo-Foil Tape.
Figure 7 Suspended timber floor
Thermo-Foil ES
or Eco-Brite
floor boarding
floor joists
air space minimum 19 mm
15.11 All joints, perforations and damaged areas must be thoroughly and sealed. Airtight seals should also be
provided at service penetrations.
15.12 It is important that damage does not occur to the barrier during installation and, when possible, steps must be
taken to minimise damage to the barrier during construction, eg placing the barrier over the floor immediately before
the laying of the finished flooring.
Intermediate/exposed floors
15.13 All the services should be incorporated beneath the existing floor, above the insulation if possible.
Roof application
15.14 Appropriate laps must be provided and securely taped. Typical installation details are shown in Figures 4
and 9.
15.15 Hips and valleys should be covered with an additional strip underlay, well taped.
Page 10 of 13
Figure 8 Suspended concrete ground floors only
Figure 9 Metal roofs
metal deck
roofing felt
Thermo-Foil ES or Eco-Brite
insulation
inner finish
Technical Investigations
16 Tests
Tests were carried out to determine the emissivity of the products.
17 Investigations
17.1 An assessment was made of data relating to:
•
•
•
•
•
•
•
emissivity
water vapour permeability
durability (salt fog test)
tensile strength
elongation
tear and puncture strength
behaviour in fire.
17.2 An assessment of the risk of interstitial condensation in typical constructions was made.
17.3 Site surveys were carried out to assess the practicability of installation and performance in use of the products.
17.4 The manufacturing process was evaluated, including methods adopted for quality control and details of the
composition of the materials used.
Page 11 of 13
Bibliography
BS 476-6 : 1989 Fire tests on building materials and structures — Method of test for fire propagation for products
BS 476-7 : 1997 Fire tests on building materials and structures — Method of test to determine the classification of the
surface spread of flame of products
BS 8212 : 1995 Code of practice for dry lining and partitioning using gypsum plasterboard
BS 5250 : 2011 Code of practice for control of condensation in buildings
BS 5427-1 : 1996 Code of practice for the use of profiled sheet for roof and wall claddings on buildings — Design
BS 5534 : 2003 Code of practice for slating and tiling (including shingles)
BS EN 520 : 2004 Gypsum plasterboards — Definitions, requirements and test methods
BS EN 1996-1-1 : 2005 Eurocode 6 : Design of masonry structures — General rules for reinforced and unreinforced
masonry structures
BS EN 1996-2 : 2006 Eurocode 6 : Design of masonry structures — Design considerations, selection of materials and
execution of masonry
BS EN 1995-1-1 : 2004 Eurocode 5 : Design of timber structures — General — Common rules and rules for buildings
BS EN ISO 6946 : 2007 Building components and building elements — Thermal resistance and thermal transmittance
— Calculation method
BS EN ISO 9001 : 2008 Quality management systems — Requirements
BBA Information Bulletin No 3 Reflective foil insulation – Conventions for U value calculations
BRE Information Paper IP 1/06 Assessing the effects of thermal bridging at junctions and around openings
BRE Report (BR 262 : 2002) Thermal insulation: avoiding risks
BRE Report (BR 443 : 2006) Conventions for U-value calculations
EN 12871 : 2010 Wood-based panels — Performance specifications and requirements for load bearing boards for
use in floors, walls and roofs
Page 12 of 13
Conditions of Certification
18 Conditions
18.1 This Certificate:
• relates only to the product/system that is named and described on the front page
• is issued only to the company, firm, organisation or person named on the front page — no other company, firm,
organisation or person may hold or claim that this Certificate has been issued to them
• is valid only within the UK
• has to be read, considered and used as a whole document — it may be misleading and will be incomplete to be
selective
• is copyright of the BBA
• is subject to English Law.
18.2 Publications, documents, specifications, legislation, regulations, standards and the like referenced in this Certificate
are those that were current and/or deemed relevant by the BBA at the date of issue or reissue of this Certificate.
18.3 This Certificate will remain valid for an unlimited period provided that the product/system and its manufacture
and/or fabrication, including all related and relevant parts and processes thereof:
• are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA
• continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine
• are reviewed by the BBA as and when it considers appropriate.
18.4 The BBA has used due skill, care and diligence in preparing this Certificate, but no warranty is provided.
18.5 In issuing this Certificate, the BBA is not responsible and is excluded from any liability to any company, firm,
organisation or person, for any matters arising directly or indirectly from:
• the presence or absence of any patent, intellectual property or similar rights subsisting in the product/system or any
other product/system
• the right of the Certificate holder to manufacture, supply, install, maintain or market the product/system
• actual installations of the product/system, including their nature, design, methods, performance, workmanship and
maintenance
• any works and constructions in which the product/system is installed, including their nature, design, methods,
performance, workmanship and maintenance
• any loss or damage, including personal injury, howsoever caused by the product/system, including its manufacture,
supply, installation, use, maintenance and removal
• any claims by the manufacturer relating to CE marking.
18.6 Any information relating to the manufacture, supply, installation, use, maintenance and removal of this product/
system which is contained or referred to in this Certificate is the minimum required to be met when the product/system
is manufactured, supplied, installed, used, maintained and removed. It does not purport in any way to restate the
requirements of the Health and Safety at Work etc. Act 1974, or of any other statutory, common law or other duty
which may exist at the date of issue or reissue of this Certificate; nor is conformity with such information to be taken as
satisfying the requirements of the 1974 Act or of any statutory, common law or other duty of care.
British Board of Agrément
Bucknalls Lane
Watford
Herts WD25 9BA
©2013
Page 13 of 13
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