Material

Schluter-KERDI-SHOWER-ST, -SC, and -SR are manufactured using expanded polystyrene (PS 40). Schluter-KERDI-SHOWER-ST, -SC, and -SR require no special disposal and can be recycled. No CFC’s or HCFC’s are present in either the product or in the manufacturing process. Exposure to ultraviolet rays (sunlight) for long periods of time will result in partial degradation (dusting) at the surface.

The polystyrene foam has a density of 2.75 lb/ft³ (0.5 kN/m³) with a 48 psi (331 kPa) compressive strength at 10% deformation. It is serviceable in temperatures up to 175°F (79° C).

The expanded polystyrene used to manufacture Schluter-KERDI-SHOWER products is treated with a flame retarding agent. The foam is self-extinguishing and achieves an HF-1 rating according to UL 94. Expanded polystyrene should not be exposed to hydrocarbons, esters, amines, and aldehydes. All will deteriorate foam. Schluter-KERDI-SHOWER-ST is designed to be used as a base in tiled shower receptors. Schluter-KERDI-SHOWER-SC is designed to be used as a base for tiled shower curbs and integrates with Schluter-KERDI-SHOWER-ST or conventional mortar applications. Schluter-KERDI-SHOWER-SR is designed to facilitate the construction of access ramps for tiled shower installations.