Tree layers for max protection underneath your rooftiles for it is waterproof, it reflects the heat from getting into your ceiling and it makes the condensation fumes get out from your ceiling to the ventilation channel. This product is highly effective if the roof is installed with ventilation options such as Figaroll (instead of cement) for the ridges and sufficient ventilation tiles.
The Divoroll Maximum + 2S is a real all-rounder. It is an extremely water-repellent, vapor-permeable underlayment membrane, which can be attached to a dimensionally stable insulation or used as a roofing membrane. This underlayment is made of robust polyurethane and tear-resistant nail fleece with integrated PP grid and withstands even the heaviest loads. The installation is very easy.