The insulating fiberboard AGEPAN® UDP T+G according to DIN EN 13171 as a sarking board according to ZVDH (Central Federation of German Roofing Contractors) regulations: UPD-A for fully insulated roof constructions. It serves as a second water-repellent layer and as wind and rain-proof sheathing. It is entirely hydrophobic, vapour-permeable and hygroscopic and also provides an emergency roof solution for up to 8 weeks in event of exposure to elements and after storm damages.