Thoro T1180 GRY Seal Foundation Coating, 50 lb Thoro T1180 GRY 50 Lbs. Thoroseal Foundation Coating Locks deep into pores and voids This Product is manufactured in United States Cleans up with soap and water immediately after use. Recommended for: Concrete, masonry, basement walls, foundation and retaining walls. Coverage: Base Coat: 225 square feet at 1/16 IN dry-film thickness; Top Coat: 450 square feet at 1/32 IN dry-film thickness. Coverage will vary depending on surface texture and porosity