1、BRITISH STANDARD BS 8217:2005 Reinforced bitumen membranes for roofing Code of practice ICS 91.060.20 BS 8217:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 January 2005 BSI 26 January 2005 First published (as CP 144.101), September
2、1952 Second edition, July 1961 First published as CP 144-1, Imperial units, June 1968 Published in metric form as Part 3, 1970 First published as BS 8217, June 1994 Second edition, January 2005 The following BSI references relate to the work on this British Standard: Committee reference B/546/3 Draf
3、t for comment 03/309494 DC ISBN 0 580 45116 X Committee responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee, B/546, Flexible sheets for water and water vapour control, to Subcommittee B/546/3, Built-up bitumen roof covering, upon which
4、the following bodies were represented: Association of British Roofing Felt Manufacturers Association of Building Component Manufacturers Flat Roofing Alliance National Federation of Roofing Contractors NHBC National House-Building Council Office of the Deputy Prime Minister British Board of Agrment
5、Office of the Deputy Prime Minister Building Research Establishment Royal Institute of British Architects Amendments issued since publication Amd. No. Date CommentsBS 8217:2005 BSI 26 January 2005 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative referenc
6、es 1 3T e r m s a n d d e f i n i t i o n s 2 4 Exchange of information 4 5M a t e r i a l s 4 6 General design considerations 15 7 Design of reinforced bitumen membrane roofing 20 8 Sitework 40 9 Inspection, testing and protection 49 10 Maintenance and repair 49 Annex A (normative) Methods of attac
7、hment of reinforced bitumen membrane roofing and surface protection 52 Bibliography 55 Table 1 Types and uses of thermal insulation 8 Table 2 Grades of bitumen used in reinforced bitumen membrane roofing 13 Table 3 Types of roof surface protection 19 Table 4 Types of roof surface protection Specific
8、 applications 19 Table 5 Batten centres for pitched BUR roofs 24 Table A.1 Hot roll-and-pour and torch-on methods of application 52 Table A.2 Cold adhesion method of application 53 Table A.3 Attachment of vapour control layers 54 Figure 1 Nailing reinforced bitumen membranes on slopes over 10 and up
9、 to 25 24 Figure 2 Nailing reinforced bitumen membranes on slopes from 25 to 60 25 Figure 3 Nailing reinforced bitumen membranes on slopes from 60 to vertical 26 Figure 4 General arrangement and detail locations 27 Figure 5 Upstand Warm deck roof 29 Figure 6 Upstand Inverted roof 31 Figure 7 Indepen
10、dent upstand beneath cladding 32 Figure 8 Change in roof level at riser or side of trough gutter 33 Figure 9 Eaves detail 34 Figure 10 Verge/check edge 34 Figure 11 Mansard edge 35 Figure 12 Pitched roof abutment 36 Figure 13 Rainwater outlet 37 Figure 14 Cold pipe penetration 38 Figure 15 Movement
11、joint Twin kerb 39 Figure 16 Parapet wall with coping detail 40 Figure 17 Multi-layer lapping 47BS 8217:2005 ii BSI 26 January 2005 Foreword This British Standard has been prepared by Subcommittee B/546/3, under the direction of Technical Committee B/546. It supersedes BS 8217:1994, which is now wit
12、hdrawn. Products covered by this standard are commonly referred to as “roofing felts”, but the new European product standard (prEN 13707) will refer to them as “flexible bitumen sheets for roof waterproofing”. The finalized title of this standard needs to be understood clearly by the UK construction
13、 industry, and will hence refer to “reinforced bitumen membranes for roofing”. BS 6229:2003 gives recommendations on the design of flat roofs combining various types of continuously supported roof covering, insulation materials and roof decks. This British Standard gives detailed recommendations for
14、 reinforced bitumen membrane roofing on roofs designed to conform to BS 6229:2003. Much of the information is equally relevant to reinforced bitumen membrane roofing on sloping roofs also covered by this code. A flat roof typically comprises a ceiling, structural supports, roof deck, waterproof cove
15、ring and surface protection, and incorporates insulation and drainage. It might support ancillary items such as engineering equipment, hand railing and lightning conductors. It is recognized that this standard might not fully cover all types of reinforced bitumen membranes or application techniques.
16、 For convenience, recommendations for methods of attachment and recommendations for reinforced bitumen membrane roofing of different grades are given in Annex A. It has been assumed in drafting this British Standard that construction will be carried out by trained operatives, who have sufficient tra
17、ining and awareness to work safely on flat roofing projects, under the direction of qualified supervisors. This British Standard calls for the use of substances and/or procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does n
18、ot absolve the user from legal obligations relating to health and safety at any stage. Attention is drawn to all pertinent current Health and Safety Executive publications, including Health and safety in roofing 1, Test for fragility 2, The management of health and safety in construction 3; and also
19、 to the Building regulations 4 published by The Stationery Office, and the Roofing handbook 5 published by the Flat Roofing Alliance. The European Product Standard for waterproofing membranes (prEN 13707) is currently in preparation; when this is introduced, BS 747:2000 will be withdrawn. Therefore,
20、 a new standard (to be numbered BS 8747) is being drafted, in the form of a specification and selection guide, to assist the UK specifier to select the correct layers in a reinforced bitumen membrane system for maximum performance and longevity. As a code of practice, this British Standard (BS 8217)
21、 takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading. This publication does not purport to include all the necessary provisions of a contract. Users are respon
22、sible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 55, and a back cover. The BSI copyright notice displayed in this
23、document indicates when the document was last updated.BS 8217:2005 BSI 26 January 2005 1 1 Scope This British Standard gives recommendations for the selection of reinforced bitumen membranes, their combination to form reinforced bitumen membrane roofing, and their application to flat and sloping roo
24、fs. It also gives recommendations for mechanically fastened single-layer reinforced bitumen membranes, torch-applied bitumen membranes, and self-adhesive reinforced bitumen membranes for roofing. The recommendations given for the design, construction and maintenance of new roofs are also applicable
25、to the overlay of existing roofs, subject to confirmation of the suitability of the existing construction. This code of practice does not address or apply to roofs used for special purposes such as car park areas. 2 Normative references The following referenced documents are indispensable for the ap
26、plication of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 476-3:2004, Fire tests on building materials and structures Part 3: Classification and method of test for ext
27、ernal fire exposure to roofs. BS 747:2000, Reinforced bitumen sheets for roofing Specification. BS 1202-1, Specification for nails Part 1: Steel nails. BS 2000-72, Methods of test for petroleum and its products Part 72: Determination of viscosity of cutback bitumen. BS 3690-2, Bitumens for building
28、and civil engineering Part 2: Specification for bitumens for industrial purposes. BS 3927, Specification for rigid phenolic foam (PF) for thermal insulation in the form of slabs and profiled sections. BS 3958-5, Thermal insulation materials Part 5: Specification for bonded man-made mineral fibre sla
29、bs. BS 4841-3, Rigid polyurethane (PUR) and polyisocyanurate (PIR) foam for building applications Part 3: Specification for two types of laminated board (roofboards) with auto-adhesively bonded reinforcing facings for use as roofboard thermal insulation for built-up roofs. BS 5250, Code of practice
30、for control of condensation in buildings. BS 5268-2, Structural use of timber Part 2: Code of practice for permissible stress design, materials and workmanship. BS 5268-5, Structural use of timber Part 5: Code of practice for the preservative treatment of structural timber. BS 5950-6, Structural use
31、 of steelwork in building Part 6: Code of practice for design of light gauge profiled steel sheeting. BS 6100-1.3.2:1989, Glossary of building and civil engineering terms Part 1.3.2: General and miscellaneous Parts of construction works Roofs and roofing. BS 6229:2003, Flat roofs with continuously s
32、upported coverings Code of practice. BS 6399-1, Loading for buildings Part 1: Code of practice for dead and imposed loads. BS 6399-2, Loading for buildings Part 2: Code of practice for wind loads. BS 6399-3, Loading for buildings Part 3: Code of practice for imposed roof loads. BS 7263-1, Precast co
33、ncrete flags, kerbs, channels, edgings and quadrants Part 1: Precast, unreinforced concrete paving flags and complementary fittings Requirements and test methods. BS 8103-3, Structural design of low-rise buildings Part 3: Code of practice for timber floors and roofs for housing. BS EN 300:1997, Orie
34、nted strand boards (OSB) Definitions, classification and specifications. BS EN 485-2:1995, Aluminium and aluminium alloys Sheet strip and plate Part 2: Mechanical properties.BS 8217:2005 2 BSI 26 January 2005 BS EN 515, Aluminium and aluminium alloys Wrought products Temper designations. BS EN 622-4
35、, Fibreboards Specifications Part 4: Requirements for softboards. BS EN 636:2003, Plywood Specifications. BS EN 1426:2000/BS 2000-49:2000, Methods of tests for petroleum and its products Part 49: Bitumen and bituminous binders Determination of needle penetration. BS EN 1427:2000/BS 2000-58:2000, Met
36、hods of tests for petroleum and its products Part 58: Bitumen and bituminous binders Determination of softening point Ring and ball method. BS EN 10147:2000, Continuously hot-dip zinc coated structural steels strip and sheet Technical delivery conditions. BS EN 12056-3, Gravity drainage systems insi
37、de buildings Roof drainage, layout and calculation. BS EN 12591, Bitumen and bituminous binders Specifications for paving grade bitumens. BS EN 13162, Thermal insulation products for buildings Factory made mineral wool (MW) products Specification. BS EN 13163, Thermal insulation products for buildin
38、gs Factory made products of expanded polystyrene Specification. BS EN 13164, Thermal insulation products for buildings Factory made products of extruded polystyrene foam (XPS) Specification. BS EN 13165, Thermal insulation products for buildings Factory made rigid polyurethane foam (PUR) products Sp
39、ecification. BS EN 13166, Thermal insulation products for buildings Factory made products of phenolic foam (PF) Specification. BS EN 13167, Thermal insulation products for buildings Factory made cellular glass (CG) products Specification. BS EN 13168, Thermal insulation products for buildings Factor
40、y made wood wool (WW) products Specification. BS EN 13169, Thermal insulation products for buildings Factory made products of expanded perlite (EPB) Specification. BS EN 13170, Thermal insulation products for buildings Factory made products of compressed cork (ICB) Specification. DD ENV 12872, Wood-
41、based panels Guidance on the use of load-bearing boards in floors, walls and roofs. 3 Terms and definitions For the purposes of this British Standard, the terms and definitions given in BS 6100-1.3.2:1989 and the following apply. 3.1 built-up reinforced bitumen membrane two or more layers of reinfor
42、ced bitumen membrane, bonded together with sealed joints to form a continuous waterproof covering; this also includes specifically designed bituminous single-layer systems with sealed joints, forming a continuous waterproof covering, and installed according to the manufacturers instructions 3.2 base
43、 layer first layer layer of reinforced bitumen membrane which is laid first 3.3 intermediate layer layer of reinforced bitumen membrane that is applied between the base/first layer and the top layer or capsheetBS 8217:2005 BSI 26 January 2005 3 3.4 top layer uppermost layer of reinforced bitumen mem
44、brane that requires the application of surface protection 3.5 capsheet uppermost layer of reinforced bitumen membrane that incorporates a protective finish 3.6 bonding bitumen oxidized bitumen or other suitable bitumen compound melted and used hot 3.7 gritting solution bitumen compound, formulated t
45、o bond a layer of mineral chippings to the surface of reinforced bitumen membrane roofing 3.8 full bonding use of a continuous coat of bonding to adhere a layer of reinforced bitumen membrane roofing 3.9 partial bonding use of a controlled and regular quantity of bonding, so as to provide adhesion o
46、ver a proportion of the total area of the substrate 3.10 substrate surface or layer upon which reinforced bitumen membrane roofing is laid 3.11 roof deck part of the roof construction which supports the waterproofing system, including as appropriate the vapour control layer and insulation 3.12 warm
47、deck roof warm roof roof in which the principal thermal insulation is placed above the roof deck and a vapour control layer, and immediately below the roof waterproofing 3.13 inverted roof inverted warm deck roof upside-down roof protected membrane roof roof in which the principal thermal insulation
48、 is placed above the waterproof covering 3.14 cold deck roof cold roof roof in which the principal thermal insulation is at or immediately above the ceiling NOTE In heated buildings there is a need for any void between deck and insulation to be well ventilated. 3.15 access roof roof used to provide access to plant or equipment 3.16 terrace roof flat roof for use as an amenity areaBS 8217:2005 4 BSI 26 January 2005 3.17 vapour control layer VCL construction material that substantially reduces the transfer of water vapour through the roof NOTE 1 From BS 6229:2003. NOTE 2 T
