SchluterÂ®-BEKOTEC is a modular screed system that produces permanent flooring assemblies that are free from internal stress. The BEKOTEC-EN/US/P studded polystyrene screed panels are placed directly over any load bearing substrate and optional common sound and/ or heat-insulating layers. The studs effectively divide the screed into smaller, 4-1/4" (108 mm) square modules, thereby confining shrinkage and curing stresses to control deformations such as curling and continuous cracks that can be common in a traditional screed. These modular screed systems allow the installation of continuous screed surfaces without any control joints or wire reinforcement. The elimination of control joints allows surface movement joints to be placed to match the joint layout in the tile covering. Sold by carton (12 sheets per ctn).