Self-adhesive sealing tape made of polyethylene foam with a closed cell structure, for sealing at the contact points of the roofing membrane and counter battens with the roof truss. Used under counter-battles. Seals the penetration of roof membranes through staples and nails, while eliminating inequalities between counter battens, roof membrane and rafters. It prevents water from entering the thermal insulation, which can occur as a result of water penetrating the gaps formed by fasteners, such as staples and nails. Adhesives on smooth and porous surfaces, but remember that the glued surface should be free of grease and dust. It has high adhesive strength, is resistant to UV rays and aging processes.