Waterproof underlays (felt) with thermal insulation capabilities
Vapour permeable roofing underlay protects even in extreme conditions.
DELTA-MAXX ensures extremely sure footing when working with ladders on roof battens.
Easy installation with its squared surface pattern: helps to cut straight edges.
Can be unrolled and lined up very quickly.
Germany’s most popular vapour permeable underlay for fully insulate pitched roofs.
Protect from rain, driven snow and permanent condensation problems.