Perfect solution for bathrooms, kitchens, exterior decks - areas where waterproofing and crack suppression are needed! ( 8 0 0 ) 6 3 3 - 4 6 2 2 w w w . n a c p r o d u c t s . c o m (available in 1 or 5 gallon sizes) Waterproof, Period! Crack Suppression Membrane