Roof stain is the easiest way to clean your roof. It comes in a bottle that readily attaches to your garden hose allowing you to spray it on your roof without a ladder. Simply saturate your roof with roof stain and let it go to work. Let natural rainfall do the rinsing for your or spray clean water on the roof 12 to 24 hours after the roof stain application. Roof stain will remove stains on your roof from molds or fungus. It will not damage your home or the landscaping and will not put your children or pets at risk. It is safe for use on asphalt shingles, Tile, cement Tile, slate, rubber, composite, metal and wood roofing materials.