Water repellent that penetrates, protects and bonds with porous surfaces of brick, concrete, masonry and stucco. Prevents water penetration that causes spalden, milddew, freeze-thaw damage and the affects of acid rain. VOC compliant water base contains no hazardous chemicals. 15 year warranty. 5 gallon pail will cover approximately 300sq. ft. Please read the lable before using this product.