REDGARD® WATERPROOFING AND CRACK PREVENTION MEMBRANEA ready to use elastomeric waterproofing membrane for both commercial and residential tile and stone application. Suited for interior and exterior substrates, Redgard creates a continuous waterproof membrane barrier with outstanding adhesion and reduces crack transmisssion in tile and stone floors. It bonds directly to clean metal drains, PVC, stainless steel and ABS drain assemblies and can be used as a slab on grade moisture vapor barrier under all