Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 35·6.30
Resistance to moisture by reference to British Standards
Moisture resistance requirements can be met by following relevant recommendations in specified British Standards and industry guidance documents for various cladding and roofing materials.
The requirement to resist the passage of moisture from the weather can also be met by following the relevant recommendations of – (a) BS CP 143 for sheet roof and wall coverings made from the following materials – Part 1: 1958 for corrugated and troughed aluminium; Part 5: 1964 for zinc; Part 10: 1973 for galvanized corrugated steel; Part 12: 1970 for copper; and Part 15: 1973 for aluminium; Recommendations for lead are included in BS 6915; (b) BS 8219 for profiled fibre cement; (c) BS 8200 for the design of non-loadbearing external vertical enclosures of buildings; (d) BS 8297 for design and installation of non-loadbearing precast concrete cladding; (e) BS 8298 for design and installation of natural stone cladding and lining; (f) Metal Cladding and Roofing Manufacturers Association (MCRMA) Technical Paper 6 Profiled metal roofing design guide; and (g) MCRMA Technical Paper 9 Composite roof and wall cladding panel design guide. These documents describe the materials and contain design considerations including recommendations for fixing.
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