Comment: Test data to BS 476-3 : 1958 indicate that on suitable substructures
the use of the system will enable a roof to be unrestricted under this Requirement
.
CI/SfB (47)
Ln6
Fatra (UK) Limited Unit 12 The Timber Yard East Moors Road Ocean Park Cardiff CF24 5EE Tel: 029 2048 7954 Fax: 029 2048 9226
Agrément Certificate
e-mail:
[email protected] website: www.fatra.co.uk
No 02/3921
PRODUCT SHEET 1 — FATRAFOL 810 ROOF COVERING SYSTEM PRODUCT SCOPE AND SUMMARY OF CERTIFICATE This Certificate relates to the Fatrafol 810 Roof Covering System, a polyester-mesh-reinforced PVC roof waterproofing membrane. THIS CERTIFICATE INCLUDES: • factors relating to compliance with UK 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 Weathertightness — the system and joints in the system, when completely sealed and consolidated, will resist the passage of moisture to the interior of the building (see section 4). Properties in relation to fire — tests indicate that the system will enable a roof to be unrestricted under Building Regulations (see section 5). Resistance to wind uplift — when correctly specified, the system will resist the effects of any wind suction likely to occur in practice (see section 6). Resistance to foot traffic — the system will accept the limited foot traffic and loads associated with installation and maintenance of the system without damage (see section 7). Durability — under normal service conditions the system will provide a durable waterproof covering with a service life of at least 30 years (see section 8).
The BBA has awarded this Agrément Certificate for the Fatrafol 810 Roof Covering System to Fatra (UK) Limited as fit for its intended use provided it is installed, used and maintained as set out in this Agrément Certificate. On behalf of the British Board of Agrément
Date of First issue: 28 May 2002 Date of Third issue: 13 November 2007
Greg Cooper: 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 Garston, Watford Herts WD25 9BA
©2007 Page 1 of 8
tel: 01923 665300 fax: 01923 665301 e-mail:
[email protected] website: www.bbacerts.co.uk
Regulations In the opinion of the BBA, the Fatrafol 810 Roof Covering System, if used in accordance with the provisions of this Certificate, will meet or contribute to meeting the relevant requirements of the following Building Regulations: The Building Regulations 2000 (as amended) (England and Wales)
Requirement:
B4(2)
Requirement:
C2(b)
Resistance to moisture
Tests for water resistance on the system, including joints, indicate that the system meets this Requirement. See section 4.1 of this Certificate.
Comment: Requirement:
External fire spread
Test data to BS 476-3 : 1958 indicate that on suitable substructures the use of the system will enable a roof to be unrestricted under this Requirement. See sections 5.1 to 5.3 of this Certificate.
Comment:
Regulation 7
Materials and workmanship
The system is an acceptable material. See section 8 of this Certificate.
Comment:
The Building (Scotland) Regulations 2004 (as amended) Regulation: Regulation:
8 8(1)
The system can contribute to a construction meeting this Regulation. See section 8 and the Installation part of this Certificate.
Comment: Regulation: Standard:
9 2.8
3.10
Precipitation
Tests for water resistance on the system, including joints, indicate that the system will enable a roof to satisfy the requirements of this Standard, with references to clauses 3.10.1(1)(2) and 3.10.7(1)(2). See section 4.1 of this Certificate.
Comment:
Regulation:
Building standards — construction Spread from neighbouring buildings
Test data to BS 476-3 : 1958 indicate that the system when applied to a non-combustible substrate can be regarded as having a low vulnerability under clause 2.8.1(1)(2) of this Standard. See sections 5.1 and 5.2 of this Certificate.
Comment:
Standard:
Fitness and durability of materials and workmanship Fitness and durability of materials and workmanship
12
Building standards — conversions
All comments given for this system under Regulation 9, also apply to this Regulation, with reference to clause 0.12.1(1)(2) and Schedule 6(1)(2).
Comment:
(1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic).
The Building Regulations (Northern Ireland) 2000 (as amended) Regulation:
B2
Regulation:
C4(b)
Comment:
Resistance to ground moisture and weather
Tests for water resistance on the system, including joints, indicate that the use of the system will enable a roof to satisfy the requirements of this Regulation. See section 4.1 of this Certificate.
Comment: Regulation:
Fitness of materials and workmanship
The system is acceptable. See section 8 of this Certificate.
Comment:
E5
External fire spread
Test data to BS 476-3 : 1958 indicate that on suitable substructures the use of the system will be enable a roof to be unrestricted under the requirements of this Regulation. See sections 5.1 and 5.2 of this Certificate.
Construction (Design and Management) Regulations 2007 Construction (Design and Management) Regulations (Northern Ireland) 2007 Information about this Certificate may assist the client, CDM co-ordinator, designer and contractors to address their obligations under these Regulations. See sections:
1 Description (1.3) and 2 Delivery and site handling (2.3) of this Certificate.
Non-regulatory Information NHBC Standards 2007 NHBC accepts the use of the Fatrafol 810 Roof Covering System, when installed and used in accordance with this Certificate, as meeting Technical Requirement R3 in relation to NHBC Standards, Chapter 7.1 Flat roofs and balconies.
Page 2 of 8
Zurich Building Guarantee Technical Manual 2007 In the opinion of the BBA, the Fatrafol 810 Roof Covering System, when installed and used in accordance with this Certificate, satisfies the requirements of the Zurich Building Guarantee Technical Manual, Section 4, Superstructure, Sub-section Flat roofs.
General This Certificate relates to the Fatrafol 810 Roof Covering System, a polyester-mesh-reinforced PVC roof waterproofing membrane, for use as a mechanically-fixed waterproof covering on flat roofs with limited access. The membrane is manufactured in the Czech Republic by Fatra a.s. and marketed in the UK by the Certificate holder. The system is installed by trained and approved contractors only. A list is available from the UK marketing company.
Technical Specification 1 Description 1.1 The Fatrafol 810 Roof Covering System consists of a polyester-mesh-reinforced PVC roofing sheet, with solvent or hot-air welded lap joints, mechanically fixed using Structra fixing discs. 1.2 The PVC membrane comprises upper, middle and lower layers manufactured by a calendar-mould process. The layers are thermoplastically fused together, sandwiching the polyester mesh (of weight 80 gm–2 to 110 gm–2) between them. 1.3 The nominal characteristics of the system are: thickness (mm) 1.5 roll length (m) 20 roll width (m) 1.3 1.9 weight per unit area (kgm–2) roll weight (kg) 50 colours grey, red, orange, green and blue 1.4 Other materials for use with the system include: • Fatra 800 — a polyester fleece used as a separating layer • Fatra membrane adhesive — used to weld the membrane to the fixing discs • Fatra PVC liquid sealant — used to seal laps and seams • Shaped PVC reinforcements — for internal and external corners • PVC-coated, galvanized steel profiles — for parapets, edge details and upstands • Fatra 812 slip-resistant walkway membrane in 650 mm widths. 1.5 Quality control checks are carried out during production and on the final product. Checks on the final product include: • appearance • thickness • roll width • breaking load • tensile strength and elongations • dimensional stability • tear resistance.
2 Delivery and site handling 2.1 The membrane is delivered to site in rolls wrapped in paper. The wrapper bears the Certificate holder’s name, batch number, product name, surface colour, and the BBA identification mark incorporating the number of this Certificate. 2.2 Rolls should be stored horizontally on a clean, dry, level surface and kept under cover until required. 2.3 Materials that are classified as ‘highly flammable’ under The Chemicals (Hazard Information and Packaging for Supply) Regulations 2002 (CHIP3), are given in Table 1. These products bear the appropriate hazard warning.
Table 1
Flashpoint and hazard classification
Material Fatra membrane adhesive Fatra PVC liquid sealant
Flashpoint (°C)
Classification
–7
Highly flammable, Irritant
–24
Highly flammable
Page 3 of 8
Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on the Fatrafol 810 Roof Covering System.
Design Considerations 3 Use 3.1 The Fatrafol 810 Roof Covering System is satisfactory for use as a mechanically-fixed waterproof layer on flat roofs with limited access. 3.2 Limited access roofs are defined for the purpose of this Certificate as those roofs subjected only to pedestrian traffic for maintenance of the roof covering and cleaning of gutters, etc. Where traffic in excess of this is envisaged special precautions, such as additional protection to the membrane, must be taken. 3.3 Flat roofs are defined for the purpose of this Certificate as those roofs having a minimum finished fall of 1:80. For design purposes, twice the minimum finished fall should be assumed, unless a detailed analysis of the roof is available, including overall and local deflection, direction of falls, etc. Pitched roofs are defined as those having falls greater than 1:6. 3.4 Decks to which the products are to be applied must comply with the relevant requirements of BS 6229 : 2003, BS 8217 : 2005 and, where appropriate, NHBC Standards 2007 Chapter 7.1 Flat roofs and balconies or the Zurich Building Guarantee Technical Manual 2007, Section 4, Superstructure, Sub-section Flat roofs. 3.5 Insulation systems or materials used in conjunction with the product must be approved by the manufacturer and must be: • as described in the relevant clauses of BS 8217 : 2005, and/or • the subject of a current BBA Certificate and be used in accordance with, and within the limitations of, that Certificate. 3.6 Contact with bituminous, coal tar and oil-based products must be avoided as the membrane is not compatible with lower grades of bitumen. If contact with such products is likely, a separating layer should be interposed before installing the waterproofing sheet. Where doubt arises, the advice of the Certificate holder should be sought.
4 Weathertightness 4.1 Data confirm that the membrane and joints in the system, when completely sealed and consolidated, will adequately resist the passage of moisture to the inside of the building and so meet the requirements of the national Building Regulations:
England and Wales — Approved Document C, Requirement C2(b), Section 6 Scotland — Mandatory Standard 3.10, clauses 3.10.1(1)(2) and 3.10.7(1)(2) (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic).
Northern Ireland — Regulation C4(b). 4.2 The system is impervious to water and when used as described will achieve a weathertight roof capable of accepting minor structural movement without damage.
5 Properties in relation to fire 5.1 When tested in accordance with BS 476-3 : 1958 a system comprising one layer of loose-laid polyethylene vapour barrier on a 18 mm thick plywood deck, with a 70 mm mineral fibre board and a 15 mm thick fibre board, mechanically-fixed through the vapour barrier using Buildex HRG screws, incorporating PVC Structra fixing discs with the Fatrafol 810 membrane bonded to the PVC Structra fixing discs using Fatrafol membrane adhesive, achieved an EXT.F.AA rating. 5.2 The designation of other specifications (eg when used on combustible substrates) should be confirmed by:
England and Wales — Test or assessment in accordance with Approved Document B, Appendix A, Clause A1 Scotland — Test to conform Mandatory Standard 2.8, clause 2.8.1(1)(2) (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic).
Northern Ireland — Test or assessment carried out by a UKAS accredited laboratory or an independent consultant with appropriate experience.
6 Resistance to wind uplift 6.1 The resistance to wind uplift of the membrane is provided by mechanical fasteners secured to the deck and passing through the membrane. The number of fixings will depend on a number of factors, including: • wind uplift forces to be resisted • pull-out strength of fasteners • elastic limit of the membrane • appropriate safety factors. Page 4 of 8
6.2 The number of fixings used should be established by reference to the wind uplift forces calculated in accordance with BS 6399-2 : 1997 on the basis of maximum permissible loads of 0.45 kN per fixing.
7 Resistance to foot traffic 7.1 Data indicate that the system can withstand, without damage, the limited foot traffic and light concentrated loads associated with the installation and maintenance operations. However, reasonable care should be taken to avoid puncture by sharp objects or concentrated loads. 7.2 In a situation where regular traffic is envisaged (ie maintenance of lift equipment) a walkway should be provided using concrete slabs supported on bearing pads or a protective layer (in addition some types of bearing pads will require the use of a protective sheet laid between the roof covering and pads). The Certificate holder can provide a Fatra 812 slip-resistant walkway membrane with an embossed finish (see section 10.5).
8 Durability The product has been in use in the Czech Republic since 1985. Accelerated weathering tests and perform in use confirm that satisfactory retention of physical properties is achieved. All available evidence indicates that the system should have a life of at least 30 years.
Installation 9 General 9.1 Installation of the Fatrafol 810 Roof Covering System must be carried out by trained and approved installers working in accordance with the relevant clauses of the Certificate holder’s instructions, BS 8000-4 : 1989 and this Certificate. 9.2 In all cases, a vapour control layer should be used directly over the deck. 9.3 The membrane may be applied over foil-faced insulation materials and fixed to the substructure in such a way as not to impair the performance of the waterproofing membrane. Polystyrene-based insulation products may also be used with a suitable isolation layer to separate the insulation from the roof covering, to reduce the risk of plasticiser migration. 9.4 The membrane must not be mechanically fixed over foam-glass insulation. Restrictions do not apply when mechanically fixing over mineral fibre board insulation. 9.5 Deck surfaces should be clean, dry, and free from sharp projections such as nail heads, concrete nibs. Where necessary (see section 3.6), a separation layer must be interposed between the substrate and the membrane. 9.6 The membrane may be laid in conditions normal to roofing work. To prevent the entrapment of moisture under the membrane it must not be laid in wet or damp weather conditions, or at temperatures below 5°C.
10 Procedure 10.1 A polyethylene vapour control layer should be installed over the deck and turned up over insulation at perimeters and ensuring 100 mm end and side laps. 10.2 Insulation boards should be laid with staggered end joints and fixed in accordance with the Certificate holder’s instructions. 10.3 The Structra fixing discs should be applied to an average of five per square metre. 10.4 The Fatrafol 810 membrane is then laid over the installed discs which are covered with Fatra membrane adhesive. 10.5 In addition, Fatra 812 can be used by fully bonding over the finished membrane with hot-air welded side laps to provide a slip-resistant walkway membrane.
11 Jointing 11.1 To ensure a watertight bond, lap joints in the membrane should be a minimum of 50 mm wide at sheet ends and details. Edge overlaps with adjacent sheets should be a minimum of 50 mm, welded over the last 50 mm as described in sections 11.2 and 11.3. 11.2 When hot-air welding a lap joint, a minimum of 50 mm of the lap width must be welded. During the process, a continuous bead of molten material must exude as a visible indication of a satisfactory weld. 11.3 Fatrafol PVC liquid sealant should be applied to finished laps. 11.4 After completion of the jointing process the lap should be tested for complete weathertightness.
12 Flashings The manufacturers supply a range of prefabricated external or internal PVC corners for the treatment of details, flashing. Page 5 of 8
13 Maintenance Roofs covered with the Fatrafol 810 should be the subject of annual inspections, as is good practice with waterproofing systems, to ensure continued security and performance.
14 Repair In the event of accidental damage, repair should be carried out by applying a patch of the membrane extending at least 50 mm beyond the defect. The joint should be cleaned back to unweathered material and solvent or hot-air welded and finally sealed using Fatra PVC liquid sealant.
Technical Investigations 15 Tests Samples of the Fatrafol 810 Roof Covering System were obtained from the Certificate holder. The results of the tests carried out by the BBA are summarised in Tables 2 and 3.
Table 2
Physical properties — general
Test (units) Ash content (%)
Table 3
Mean result
Method(1)
4.67
BS EN ISO 3451-5
Test (units)
0.35
Water vapour permeability (gm–2 day–1)
1.20
BS 3177 25°C/75% RH
171
BS 3177 25°C/75% RH
Static indentation rigid compressive
L4 L4
Dynamic indentation perlite EPS
I3 I4
Dimensional stability (%)
(2)
Water absorption (%)
Water vapour resistance (MNsg–1)
Draft UEAtc
MOAT 27 : 5.1.9
MOAT 27 : 5.1.10
Wind uplift load per fixing (N)(3)
1200
Corrected load per fixing (N)(3)
465
Physical properties — directional
MOAT 55 : 4.2.2 MOAT 55 : 5 : 1
(1) The test documents are detailed in the Bibliography. Numbers in the table refer to sections/parts of the document. (2) Draft UEAtc Technical Guide for the assessment of roof waterproofing systems made of unreinforced, reinforced and/or backed PVC sheets incompatible with bitumen, dated 24 October 2000 (final draft), Test 4.3.1.2. (3) Using a polyethylene vapour control layer on top of 0.7 mm thick galvanized steel decking with aluminium-faced polyurethane boards, mechanically fastened to the deck. The membrane is bonded by adhesive to the PVC discs fixed in the insulation.
Mean results Long
Trans
–0.1
–0.1
Tensile strength (N per 50 mm) unaged aged(2) aged(3)
1168 1245 1158
1117 1157 1123
Elongation (%) unaged aged(2) aged(3)
19.0 18.7 18.5
18.8 19.7 19.2
Nail tear strength (N) –10°C 23°C 40°C
258 352 463
277 431 434
Cold blend (°C) unaged aged(2) aged(4)
–30 –30 –30
–30 –30 –30
Method(1) MOAT 27 : 5.1.6.1 BS EN 12311-2 Method A
BS EN 12311-2 Method A
MOAT 55 : 1991
BS EN 495-5
(1) The test documents are detailed in the Bibliography. Numbers in the table refer to sections/parts of the documents. (2) Heat aged 24 weeks at 80°C. (3) Water soak 24 weeks at 23°C, tested dry. (4) UV aged UVB 4.5 GJm–2 condensation 50°C/UV light 50°C.
16 Investigations 16.1 Existing data on the fire performance of the products to BS 476-3 : 1958 were examined. 16.2 The manufacturing process was examined, including the methods adopted for quality control, and details were obtained of the quality and composition of the materials used. 16.3 A reassessment of the Durability statement was based on a visit to an existing site in the Czech Republic and on results of tests conducted on unaged and natural-aged material.
Page 6 of 8
Bibliography BS 476-3 : 1958 Fire tests on building materials and structures — External fire exposure roof test BS 3137 : 1972 Methods for determining the bursting strength of paper and board BS 3177 : 1959 Method for determining the permeability to water vapour of flexible sheet materials used for packaging BS 6229 : 2003 Flat roofs with continuously supported coverings — Code of practice BS 6399-2 : 1997 Loading for buildings — Code of practice for wind loads BS 8000-4 : 1989 Workmanship on building sites — Code of practice for waterproofing BS 8217 : 2005 Reinforced bitumen membranes for roofing — Code of practice BS EN 495-5 : 2000 Flexible sheets for waterproofing — Determination of foldability at low temperature — Plastic and rubber sheet for roof waterproofing BS EN 12311-2 : 2000 Flexible sheets for waterproofing — Determination of tensile properties — Part 2 — Plastic and rubber sheets for roof waterproofing BS EN ISO 3451-5 : 1997 Plastics — Determination of ash — Poly(vinyl chloride) MOAT No 27 : 1983 General Directive for the Assessment of Roof Waterproofing Systems MOAT No 55 : 1991 UEAtc Supplementary guide for the assessment of mechanically fastened roof waterproofing
Page 7 of 8
Conditions of Certification 17 Conditions 17.1 This Certificate: • relates only to the product/system that is named and described on the front page • is granted only to the company, firm or person named on the front page — no other company, firm or person may hold or claim any entitlement to this Certificate • 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. 17.2 References in this Certificate to any Act of Parliament, Statutory Instrument, Directive or Regulation of the European Union, British, European or International Standard, Code of Practice, manufacturers’ instructions or similar publication, are references to such publication in the form in which it was current at the date of this Certificate. 17.3 This Certificate will remain valid for an unlimited period provided that the product/system and the manufacture and/or fabrication including all related and relevant 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. 17.4 In granting this Certificate, the BBA is not responsible for: • 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 • individual installations of the product/system, including the nature, design, methods and workmanship of or related to the installation • the actual works in which the product/system is installed, used and maintained, including the nature, design, methods and workmanship of such works. 17.5 Any information relating to the manufacture, supply, installation, use and maintenance 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 and maintained. It does not purport in any way to restate the requirements of the Health & Safety at Work etc Act 1974, or of any other statutory, common law or other duty which may exist at the date 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. In granting this Certificate, the BBA does not accept responsibility to any person or body for any loss or damage, including personal injury, arising as a direct or indirect result of the manufacture, supply, installation, use and maintenance of this product/system.
British Board of Agrément Bucknalls Lane Garston, Watford Herts WD25 9BA
©2007 Page 8 of 8
tel: 01923 665300 fax: 01923 665301 e-mail:
[email protected] website: www.bbacerts.co.uk
