| Three-layer-insulation system where the under layer of insulation is divided into two slabs. This is to secure the tightness in the vapor barrier, by plain and covered mounting. It is also to take the opportunity to use, with perforated steel sheet, the bottom layer as absorber.
The bottom layer under slab is normally 20 to 50 mm. This solution is useful for Paroc Ventilated roofs, where the upper under slab has grooves in the surface. These grooves are connected to outside by hoods or openings in the construction.
We recommend the ventilated solution as the number one solution, because it brings extra safety to the building. |
