895 Rich-Flex Pliolite Masonry Waterproof Primer/Finish Coating. A waterproof coating designed to waterproof both interior and exterior, above or below grade cementitious substrates. Its special formulation penetrates the pores in the masonry substrate to form a waterproof barrier that stops water seepage. It also provides excellent reconditioning properties for cementitious substrates that show signs of spalling, efflorescence or deterioration. For Interior & Exterior Use. Gallon. White. Richards Paint Easy to Apply Excellent Durabiltiy Alkali Resistant Mold & Mildew Resistant Waterproof Contains No Lead Pigments Outstanding Coverage Excellent Product Versatility