Roof Washing – Summerville, SC and Surrounding Areas
Your roof is one of the most important—and most overlooked—features of your property. At Exterior Cleaning of South Carolina, we provide safe, effective roof washing services that remove stains, kill organic growth, and restore your roof’s appearance without causing damage. Serving Summerville and the surrounding Lowcountry since 2006, we specialize in soft wash roof cleaning for homes and businesses throughout the region.
If your roof is covered in dark streaks, moss, or algae, don’t assume it needs to be replaced. Our professional roof washing process can often bring it back to life, extending its lifespan and protecting your investment.
What Are Those Black Streaks?
In the warm, humid South Carolina climate, it’s common to see black streaks forming on asphalt shingles. These streaks are caused by Gloeocapsa magma, a type of blue-green algae that feeds on the limestone filler in shingles. Left untreated, this growth can shorten the life of your roof, reduce energy efficiency, and become a breeding ground for more damaging organisms like moss and lichen.
Other common roof contaminants include:
- Algae and mold
- Moss and mildew
- Tree sap and pollen buildup
- Rust stains and mineral streaks
- Debris from overhanging limbs
These issues don’t just hurt your home’s appearance—they trap moisture, loosen shingles, and lead to premature aging.
Our Soft Wash Roof Cleaning Process
Unlike standard pressure washing, which can dislodge shingles or void roofing warranties, our soft wash method is designed specifically for delicate surfaces. Using a low-pressure application and biodegradable cleaners, we treat your roof for algae, mold, and moss without causing any damage.
Here’s how it works:
- We apply a safe, eco-friendly cleaning solution that kills algae at the root.
- The solution breaks down buildup and lifts stains from the surface.
- A low-pressure rinse clears away the residue, leaving your roof clean and streak-free.
- In most cases, results continue to improve as the solution works over time—without scrubbing or scraping.
- We clean all roof types, including:
- Asphalt shingles
- Metal roofing
- Slate and tile
- Flat and low-slope commercial roofs



