Proudly Serving Charleston & Surrounding Areas
Roof washing in Charleston, SC by Preferred Services Group uses low-pressure soft washing to safely remove black streaks, algae, moss, and lichen from shingle, metal, tile, and commercial roofs across the peninsula, West Ashley, James Island, and Johns Island. Soft washing protects roofing warranties. Licensed and insured. Call (843) 478-2114.
Roof Washing for Charleston Properties
Charleston's heat, humidity, and salt air make it one of the toughest roofing environments in the country. Those dark streaks running down roofs across the peninsula and the islands are Gloeocapsa magma algae, and once it takes hold it spreads fast — especially on shaded, north-facing, and tree-covered slopes.
We clean roofs the only safe way: low-pressure soft washing under 100 PSI paired with biodegradable solutions that kill algae, moss, and lichen at the root. High-pressure washing has no place on a roof — it lifts shingles, cracks tiles, strips granules, and can void your warranty. Soft washing cleans safely and the results last far longer.
For historic and coastal properties, protecting the roof matters even more. Algae and moss hold moisture against the roof surface and quietly shorten its life. Regular soft washing keeps the roof clean, reflective, and lasting years longer than one left to degrade under organic growth.
What We Soft Wash in Charleston
Local Exterior Cleaning Expertise in Charleston
We soft wash roofs across Charleston, including the downtown peninsula, West Ashley, James Island, Johns Island, and Daniel Island, on both commercial buildings and residential properties.
Coastal humidity and heavy tree cover make Charleston roofs prone to fast algae and moss return, so many properties benefit from soft washing every 18 to 24 months. We assess each roof and recommend a realistic schedule.
Frequently Asked Questions
Common questions about roof washing in Charleston, SC.