Schluter® DITRA-HEAT-PS ROLL 3'3" X 41'1" = 134.5 SFDITRA HEAT PS is the peel and stick version of the standard DITRA HEAT membrane same uncoupling, waterproofing, and cable channels, but it bonds to clean concrete with pressure sensitive adhesive instead of thin set. No mixing, no trowelling, no waiting. 134. 5 sq ft roll peel the release film, press onto clean concrete, roll for full contact, then snap cables directly into the stud channels Ideal for large heated floor areas over concrete: basements,