Block & Wall™ Liquid Rubber Waterproofer Multi-purpose Coating & Sealant is an adhesive, elastomeric, white liquid rubber designed for waterproofing walls & foundations. Block & Wall™ Liquid Rubber adheres to various surface types & dries to a strong, flexible, waterproof membrane.
It’s great stuff paint it on or roll it even spray it make sure surfaces are clean and when applying do coats the thin let dry and do it again is best way to make it work
Really good stuff worth the money I've used it on various projects an never disappointed me.. Awesome