Flat roof insulation EUROTHANE SILVER on steeldeck with mechanically fixed bituminous waterproofing systems

The thermal insulation will be realised by board of rigid polyurethane foam (Eurothane Silver) with a core volume weight of ± 30 kg/m³ and with a fire reaction Euroclass B s2 d0 (end use steeldeck).
The declared thermal conductivity coefficient λ_D = 0,023 W/mK.
The boards are subject to a permanent quality control done by an acknowledged institute. The production of the insulation boards is certified according to the ISO 9001:2000 standards.
Pressure resistance with 10 % deformation: > 120 kPa (1,2 kg/ cm²).
The dimensions of the boards are 1200 mm x 2500 mm. The minimum thickness of the insulation board depends on the corrugation opening of the steeldeck. When the edges are fully supported, this support amounts to 1/3 of the corrugation opening. The boards are installed staggered and with closed joints. Care should be taken to make sure that the edges are fully supported. The boards are mechanically fixed to the steeldeck. The amount of fastenings is minimally 6 per board. The mechanical fixations to be used will comply the demands in compliance with the UEAtc-class II and will have a minimum diameter of 4,8 mm. The waterproofing has to be applied immediately after the installation of the insulation. The bituminous waterproofing will be mechanically fixed through the insulation boards into the steeldeck. The instructions of the manufacturer of the waterproofing should be followed.
The necessity of a vapour control layer will be determined by a calculation or by the Technical Information 215 "HET PLATTE DAK" (the flat roof) of the WTCB. The specific guidelines incorporated in the Technical Approval of the insulation material is applied, if unavailable use the guidelines of the note 215.
The following dimensions have to be used: