Stop leaks through brick and mortar with Crack & Joint Sealant. This brushable sealant seals cracks up to 1/8” wide on brick faces and at mortar or brick joints. It dries to a clear, translucent milky film in several hours and cleans up easily with soap and water. One half gallon container will treat mortar joints surrounding approximately 550 standard size bricks or approximately 100 sq. ft. of wall surface.