Schlüter®- BEKOTEC-BTS is a 5 mm thick insulation layer of closed cell polyethylene foam for installation below the studded screed panels Schlüter®- BEKOTECEN/ P and -EN/PF. The use of Schlüter®- BEKOTEC-BTS results in a significant improvement of sound insulation. The material can be used if the required construction height is not sufficient for a thick insulation layer of polystyrene or mineral fibre. The maximum floor load must be limited to 2 kN/m².