Product Review

For cleaning and removing mold and mildew on tile, asphalt, slate and other non-porous roofs. Removes black streaks, dirt and mildew stains from roof shingles. Contains a mildewcide, ChloRelease bleach activator and detergents. When mixed with water, one gallon makes 20 gallons, enough for a 2,000 sq. ft. roof.