"THOROSEAL" *Heavy, cement-based waterproof coating for concrete and masonry *Dry powder form, mix with water or Acryl 60 and water *Waterproof basements, pools, exterior walls, cisterns, block, brick, stone, etc. *Works above or below grade *Apply in two coats, first coat 225 sq. ft. per bag, second coat 450 sq. ft. per 50 LB bag *50 Lb. Sack *Gray