BS EN 508-2:2019 pdf free.Roofing and cladding products from metal sheet – Specification for self-supporting products of steel, aluminium or stainless steel sheet.
The product shall be manufactured from materials complying with 4.2. The supplier of the materials is responsible for carrying out the tests necessary to verify that the materials supplied to the manufacturer comply with the requirements and should provide appropriate inspection documents (according to EN 10204) on request. NOTE The symbols and abbreviations to be used to designate the aluminium alloy, the type and thickness of the organic coating are those of the standards referred to in Clause 2. Product testing shall be provided to a defined schedule. A permanent quality system shall be adopted by the manufacturer1).Temper shall be chosen so that the ultimate tensile strength is not lower than 150 MPa. Alloy and temper are chosen to give corrosion resistance, strength and formability. Specification of alloy,  temper and coating finish should be agreed between purchaser and supplier at the time of ordering. Tolerances on shape and dimensions shall be in accordance with EN 485-4.NOTE 1 Aluminium sheet is used either without coating or with organic coatings mainly for aesthetic reasons. It should be noted that different coating systems behave in different ways under various climatic conditions. The primer and/or adhesive should be chosen taking into account which type of substrate, pre-treatment and top coat are used. Reverse side painting or coating is used if being required for handling and storage reasons as well as for corrosion protection in some installation conditions. Performance and test methods for coil coated aluminium shall be in accordance with EN 1396. Special coatings or films may be applied to the reverse side to reduce the dripping of moisture caused by condensation.The product for roof shall resist the design loads from self-weight, insulation (if applicable), eventual membranes, snow, wind and maintenance. These loads shall be factored such that they will not impair the performance of the roof. The load level, the levels of safety and permissible deflection are defined in national building regulations. The product for cladding shall resist the design loads from self-weight, eventual insulation and wind. These loads shall be factored such that they will not impair the performance of the roof. The load level, the levels of safety and permissible deflection are defined in national building regulations.BS EN 508-2 pdf download.