Roof Cleaning That Kills the Black Streaks, Not Your Shingles

Roof cleaning runs $0.15 to $0.35 per square foot of roof area. Bundled with other services it lands at the lower end of that range, and booked on its own it typically runs $0.25 to $0.35 because one mobilization carries a single service instead of several. A roughly 2,000 square foot roof usually falls between $500 and $700 standalone. You can measure yours and see the number on this page in about thirty seconds.

Yes. Our soft wash process is the method roofing manufacturers and the Asphalt Roofing Manufacturers Association recommend, because it does not put damaging pressure on shingles. We protect your property throughout by pre-soaking all surrounding landscaping with water and managing runoff, then rinsing the landscaping again when we finish.

You see a dramatic improvement immediately. The roof is roughly 80 percent visibly clean when we leave. The rest is finished by rain, which gently rinses away the dead organic matter over the following weeks. Any remaining moss typically dries out and falls off on its own within one to three months. That is normal and expected, not a sign anything was missed.

Not the way we do it. We never use high-pressure washers on shingles. Our soft wash system runs at a pressure similar to a garden hose and relies on the cleaning solution to do the work. Improper cleaning with high pressure is what actually puts a shingle warranty at risk, because it strips granules. We also provide an itemized invoice and photos so you have documentation that the roof was professionally maintained.

Roof cleaning carries a 5 year streak-free warranty on most roofs, and 3 years on roofs with heavy tree coverage where regrowth happens faster. We would rather tell you the shorter number up front than write 5 years on a roof under a full canopy and argue about it later. If streaks return inside your window, we come back out.

They are a blue-green algae called Gloeocapsa magma, not dirt and not mildew. It feeds on the limestone filler in asphalt shingles and spreads roof to roof by airborne spores, which is why entire neighborhoods streak within a couple of years of each other. ARMA reports algae growth affects over 80 percent of US homes, concentrated in humid regions, and Middle Tennessee sits squarely in that category.

Every 3 to 5 years for most Middle Tennessee roofs. Homes under heavy tree canopy or on shaded, north-facing slopes often need it closer to every 3 years, while a sun-exposed roof can go the full 5. If you can see streaking clearly from the street, it is already established and worth handling.

Yes, and each one gets a different approach. Metal gets a solution safe for painted and galvalume finishes plus optional oxidation removal. Tile gets gentle treatment because pressure cracks it and improper foot traffic breaks it. Slate is soft wash only with minimal rinsing. Cedar shake gets wood-specific chemistry followed by a brightener to restore the natural tones. Using one method on all five is how roofs get ruined.

No. As long as we have access to an outdoor water spigot and to the areas around the house, we can complete the service while you are at work. Close your windows, bring pets inside, and move vehicles clear of the wash zone. You get before and after photos either way.

We serve Nashville and the surrounding Middle Tennessee region, including Franklin, Brentwood, Bellevue, Oak Hill, Mount Juliet, Hermitage, Nolensville, Spring Hill, and Dickson, plus Williamson, Davidson, Dickson, Cheatham, Hickman, Maury, Montgomery, Humphreys, and Houston counties. Dickson is our home base. Not sure if you are in range? Ask and we will tell you straight.