Flat roof insulation EUROTHANE Bi3 on steeldeck with mechanically fixed single ply waterproofing - bitumenstock

The thermal insulation will be realised by a board of rigid polyurethane foam (EUROTHANE Bi3) with a core volume weight of ± 30 kg/m³.
The boards will be faced on both sides with a bituminised glass fleece.
The declared thermal conductivity coefficient λ_D = 0,027 W/mK for thickness › 60 mm and 0,028 W/mK for thickness ≤ 60 mm.
The boards will have been subjected to a permanent quality control conducted 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 1000 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 meet 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 single ply 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 applicable, if unavailable use the guidelines of the note 215.
The following dimensions have to be used: