10 Best Roof Cleaners 2025 in the United States

Rust-Oleum’s Elastomeric Roof Coating is a liquid roof cleaner and protective coating designed for outdoor use on various roofing materials. It comes in a large 4.75-gallon pail and covers about 35 square feet per gallon, making it suitable for medium-sized roof areas. This product is applied by spray, which can help with even coverage but may require appropriate equipment and some experience for best results.

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover is a liquid concentrate designed to clean outdoor surfaces including roofs, siding, decks, and concrete. It works without scrubbing, rinsing, or pressure washing—simply mix with water, spray on a dry surface, and let nature handle the rest. This makes it very user-friendly, especially for those who want an easy application. The product is fragrance-free and safe for a variety of materials.

Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover is a versatile multi-surface cleaner that attaches to your garden hose with a new and improved nozzle for ease of use. The jet tip can spray up to 30 feet, making it ideal for reaching high areas like roofs, while the fan tip allows quick application on larger surfaces such as driveways and decks. One significant advantage is that it doesn't require rinsing and works over time with the wind and rain, cleaning green stains in 1-2 weeks and more stubborn black stains over several months.