DPP 20 is a double skin system for slooped roof consisting of a structural tray as inner facing and a trapezoidal steel sheet as wheather facing; The system offer a thermal performance of Up 0.20W/m².K.
Non load-bearing tray C 450.70 non perforated or perforated type P with a thickness according to the span
Glass wool or mineral wool 70mm thick in the bottom of the tray (λ = 0.040W/m.K maximum)
Airtight vapor barrier film
Purlin Multibeam on cleats
Glass wool or mineral wool 100mm thick unrolled between purlins (λ = 0.040W/m.K).
Glass wool or mineral wool 80mm thick crossed and unrolled between purlins (λ = 0.040W/m.K)
Glass wool 60mm thick (unrolled and nipped on the purlin)