DRYLOK® Siloxane 7 Brick & Masonry Penetrating Sealer has no sheen and is virtually invisible on stucco, brick, and concrete. Keeps water out Allows water vapor to escape Resists 98 mph wind-driven rain Withstands vehicle traffic Will not damage asphalt shingles Complies with all current VOC requirements Product Features: Contains 7% Siloxane - creates a chemical bond between the concrete and mortar to create a moisture vapor barrier and repel water Sizes: gallon, 5 gallons Coverage: 210 square feet per gallon Application tools: brush, roller, spray Dry time: 1 hour Coats: flood to the point of rejection Easy cleanup with warm, soapy water