Thoroseal foundation coating is a cement based coating for exterior below grade concrete and masonry specifically designed to waterproof the exterior surface of concrete and masonry below grade. Normally applied with THORO push broom or THOROSEAL 15.2 cm (6″) beaver brush, it can also be mixed with clean washed and applied as a superior waterproofing parge (trowel applied) coating. Thoroseal foundation coating in not intended as a decorative finish coat.
Thoroseal is used to waterproof foundations below grade or waterproof back coating between face brick and back-up units.