Instantly add a layer of protection to your roof with this bitumen roof felt! Inserted with reinforced fibregalss fleece and coated with oxidised bitumen, this roofing underlayment can not only repel water but also still allow itself to breathe. The top side is treated with fine grain care, and the bottom side with PE film. This roof felt can be used as a base layer of multi-layer waterproof roof coverings in new construction and in renovation of old bitumen roof coverings. Besides, it can be used as an on-site barrier for horizontal insulation of floors, foundations, concrete screeds, terraces and panels wth direct contact to the ground or for vertical insulation of underground building parts under construction conditions.