Clear, Zinsser Okon S-40 Water Repellent Concrete Sealer- OK640, 5 Gallon- 1 Pack

Unique silane/siloxane formula provides excellent protection from water, efflorescence and freeze-thaw damage Ideal for dense surfaces including light weight concrete, normal weight concrete block, mortar joints, porous brick, precast, pre-stressed, poured-in-place, exposed aggregate, and air entrained concrete and horizontal slabs, and above grade concrete wearing surfaces Ready-to-use, water-base repellent covers up to 150 square feet per gallon depending on the surface Clear, non-yellowing, penetrating formula