ETA 060158 IMPERBEL Double layer UK renew Final - ETA-Danmark

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Page 8 of 21 of European Technical Approval no. ETA-06/0158 4 Assumptions under which the fitness of the product for the intended use was favourably assessed 4.1 Installation and design Annex 4 contains detailed information on installation and design. The information comprises the following: Principle sketches: • type of mechanical fastening of membranes • type of arranging of fasteners at upstands and penetrations Membrane: Seam overlap according to detailing Fastening: Design of fastener spacing and areas according to national requirements Spacing of fasteners (according to kind of fastening) Design of perimeter and edge fixation Fastening to supporting construction Design principles of up-stands and flashings Design principles of penetrations fastening of installed parts/units according to national requirements The flexible membranes manufacturer’s installation guide forms part of this ETA. The design of the roof intended to be covered by the mechanically fastened roof waterproofing system should take account of the following factors: • Dead and imposed loads • Design wind pressure • Structural strength, stiffness and deflection limits • Attachment of the roof deck to the structural framing • Provision of insulation • Assessment of condensation risk and provision of vapour control layers • Sound insulation • Fire precautions • Roof attachments, fixtures and penetrations • Falls and drainage • Means of access for inspection and maintenance 4.2 Substrates The substrate onto which the waterproofing kit is to be laid should be sufficiently rigid, dense, and dimensionally stable to support the system (membrane + insulation). Its nature will depend on the type of roof selected (warm deck, cold deck or inverted) and in turn will have a direct influence on the method of attachment. In order to support the loads imposed by traffic, insulation materials for use in warm decks should be capable of resisting permanent deformation or damage when subjected to concentrated loads. They should have a dust-free surface and sufficient laminar strength to resist with a margin of safety and stress imposed by wind uplift forces.
Page 9 of 21 of European Technical Approval no. ETA-06/0158 It shall be ensured that the insulation material on site has a 10% compression of at least 50kPa and a point load behaviour of 120 kPa, deformation 5 mm. The use of the insulation board as substrate for mechanically fastened roof waterproofing is defined in national provisions. 4.3 Flexible membranes manufacturer’s responsibilities It is the manufacturer's responsibility to make sure that all those who use the kit are appropriately informed about the specific conditions according to sections 1, 2, 4, and 5 including the annexes to this ETA and the not confidential parts of the MTD to this ETA. 5 Recommendations 5.1 Packaging, transport and storage This product is neither toxic nor inflammable, so it is not necessary to follow any safety instructions for transport and handling. Rolls must always be stored vertically. The product must keep away from any source of heat, sparks, flame, etc. 5.2 Maintenance and repair of the works The assessment of the fitness for use is based on the assumption that a normal maintenance of the system is performed. This maintenance shall include: • inspections of the roof at regular interval, e.g. twice a year. This inspection should include: o cleaning of downpipes and leaf filters o removal of stones, branches and leafs o inspection of flashings along the edge of the roof, chimneys, drains and roof lights o removal of organic growths such as vines • Flashings to chimneys, roof edges, skylights, caps, drains etc. should be inspected every 5 years and corrected or replaced if necessary • Abrasion and minor impact damage shall be repaired. When replacing components they shall be approved by the manufacturer and covered by the ETA. Thomas Bruun Manager, ETA-Danmark A/S
Page 1 and 2: ETA-Danmark A/S Kollegievej 6 DK-29
Page 3 and 4: Page 3 of 21 of European Technical
Page 5 and 6: mechanical fastening. Page 5 of 21
Page 7: Page 7 of 21 of European Technical
Page 11 and 12: Type ETAG Paragraph IR2 4,8 × L +
Page 13 and 14: Material properties of the screws a
Page 19 and 20: Laying and overlaps of the second l
Page 21: Page 21 of 21 of European Technical

ETA 060158 IMPERBEL Double layer UK renew Final - ETA-Danmark

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