RS 50 Foam Tape with its 2.5″ vertical foam surface and 2.5″ horizontal adhesive surface folds to form a right angle along walls with integrated self-adhesive strips attaching to the substrate, containing the self-leveling material during the pour and forming a 3/16″ gap which reduces sound transfer to the walls. Also ideal for use within the Schönox Renotex 3D System, preventing insulation and poly sheet layers as well as self-leveling compound from contacting vertical surfaces.