10 Best Roof Cleaners of 2026

Simple Green is a legend in the cleaning world for a reason. It proves you don’t need harsh toxicity to get results.

This industrial-strength degreaser is non-toxic and biodegradable. If you are worried about runoff hurting your prize winning rose bushes or harming your pets, this is the safest bet on the list. It is non-abrasive and non-corrosive, making it safe for asphalt, metal, and even solar panels.

Versatility is the main selling point here. You can use this on your roof, but you can also use it on driveways, siding, carpets, and engines.

It is highly concentrated. You can dilute it manually for a pump sprayer, or dump it into the reservoir of a pressure washer. It cuts through grease, soot, and general grime effectively. Just note that because it lacks bleach, it might take a bit more scrubbing to remove heavy moss.

If patience isn’t your virtue, RMR-86 is your product. This stuff is fast.

RMR-86 is a bleach-based powerhouse designed to eliminate mold and mildew stains instantly. There is no waiting for rain or scrubbing for hours. You spray it on, watch the stains vanish, and rinse it off.

It is incredibly versatile around the home. While it works wonders on asphalt shingles, you can also use it on concrete, vinyl siding, wood decks, and bathroom tile.

However, power comes with a price. It smells very strong (like a swimming pool), and you need to be careful with runoff. It is potent stuff, so wear old clothes when you apply it. If you have black streaks or green algae, this will delete them in minutes.

Mold Armor E-Z House Wash is designed for people who want high power with low effort. It uses a bleach-based formula to attack organic growth like algae and mildew.

The “E-Z” part usually refers to the application (depending on the bottle style you buy). It is formulated to be sprayed on, left to sit for about 10 minutes, and rinsed off. It handles vinyl, wood, brick, and concrete roofing materials well.

Because it contains bleach, it brightens surfaces significantly. It strips away that gray, weathered look from wood and blasts dark stains off shingles.

You can use it at full strength for stubborn stains or dilute it for general maintenance. It is a solid choice if you want that “pressure washed” look without actually using a pressure washer.

Pro Purple is exactly what it sounds like: a heavy-duty, professional-grade degreaser. This isn’t a dedicated “mold killer” like the bleach sprays; it’s a grime fighter.

This concentrate is excellent if your roof suffers from dirt, soot, tree sap, or grease build-up. It comes with a spray bottle, but the real value is in the gallon refill.

The formula is non-corrosive, which is a huge bonus for homes with metal roofs or expensive copper gutters. It won’t eat away at the finish.

You can run this through a pressure washer or use it manually. It is water-based, so it doesn’t rely on harsh solvents, but it is still strong enough to irritate skin, so glove up.

If you own an RV or a home with a flat rubber roof (EPDM), you cannot just grab any bottle of bleach. You need something specialized. Protect All is the industry standard for this.

This cleaner is engineered to remove the chalky residue and road grime that accumulates on rubber roofs without drying out the material. Keeping the rubber moisturized is key to preventing cracks and leaks.

It is non-abrasive and biodegradable. The application does require a bit of elbow grease, you usually spray, mop/scrub, and rinse, but it is the best way to extend the life of a rubber roof.

It helps remove that white oxidation that streaks down the side of your RV when it rains.

Star Brite brings marine-grade cleaning power to your home. Originally designed for boats, this stuff is tough enough to handle constant moisture and aggressive algae.

It uses a triple-action formula with buffered bleach and chelating agents. In plain English: it lifts dirt and kills mold stains simultaneously. It is high-alkaline, so it attacks acidic grime effectively.

Because it is made for boats, it is safe on fiberglass and vinyl, making it a great choice for awnings and gutters. It works on contact without scrubbing.

However, be careful with it. It is strong. Do not use it on fabrics that aren’t colorfast, and rinse it thoroughly from metal surfaces to prevent corrosion.

Wet & Forget is the ultimate “work smarter, not harder” product. It is a slow-acting cleaner that requires zero rinsing.

You simply mix the concentrate in a pump sprayer, saturate your roof, and walk away. That’s it. Over the next few weeks and months, the wind and rain gently wash away the dead moss, mold, and algae.

It is non-acidic and contains no bleach, so it is safer for the surface of your shingles than harsh instant cleaners. It actually works with the pH of the roof to keep growth from coming back for up to a year.

This 2-pack concentrate is a massive money saver. It makes enough solution to cover huge surface areas, making it the most economical choice for large homes.

This is the ready-to-use hose-end version of the famous Wet & Forget formula. If you don’t own a pump sprayer or just hate mixing chemicals, this is the version for you.

The proprietary Xtreme Reach™ nozzle attaches directly to your garden hose and can spray up to 30 feet high. This is a game-changer for two-story homes or steep roofs that are dangerous to walk on. You can clean the roof while standing safely on the ground or a ladder.

Like the concentrate, it uses a non-bleach formula to kill moss and algae over time. It relies on the weather to do the rinsing for you.

It works on everything: roofs, siding, driveways, and decks. Just make sure you apply it on a cool, dry day so it has time to soak into the growth.

Jomax is a unique product. It isn’t just a cleaner; it’s a “activator” that you mix with bleach and water.

Why would you buy this instead of just using straight bleach? Because Jomax makes the bleach work better and safer. It contains a mildewcide and detergents that help the bleach stick to vertical surfaces and penetrate dirt. It also buffers the bleach, making it less likely to damage painted surfaces or kill your plants (though you should still be careful).

Because you add your own bleach and water, one small bottle of Jomax concentrate makes five gallons of powerful cleaning solution. This makes it incredibly cheap per gallon.

You spray it on, wait five minutes, and rinse. It is highly effective on black streaks and mold.

If you refuse to use bleach but need results faster than the “wet and forget” products, Wash Safe is your middle ground. It uses hydrogen peroxide as its main active ingredient.

Think of it as “oxygen bleach.” It fizzes and bubbles when it hits organic growth, physically lifting debris out of the shingles. It is significantly safer for landscaping, pets, and people than chlorine bleach.

It comes as a powder that you dissolve in water. Once applied, it starts breaking down into water and oxygen within hours, so it is fully biodegradable.

It is safe for cedar shakes, asphalt, slate, and tile. While it might struggle with super heavy black crusts compared to chlorine, it handles moderate cleaning jobs beautifully without the toxic runoff.