Product OverviewUse for interior or exterior floors, countertops and walls. Protects against cracks up to 18" (3m). Capable of thin-set or medium-bed use up to 3/4" (19 mm) thick on horizontal surfaces after beat in. Non-slump, medium-bed features provide support for large format tile and stone. Formulated with recycled material, contributes to LEED certification. Exceeds ANSI A118.4 and A118.11 without the need for additives.