Mortar Sentry Water Seal is a waterproofing treatment that produces a water-repellant surface on masonry and concrete, which can extend the service lives of chimneys, walls and other surfaces. Designed for use on such materials as brick, mortar, concrete block, cultured stone, sandstone and concrete.
Can be applied to horizontal and vertical surfaces. Reduces movement cracks and prevents accelerated aging. Protects against growth of mold and mildew.