Roof Cleaning
Those black streaks on your roof aren't just dirt — they're Gloeocapsa Magma, a type of algae that feeds on the limestone filler in asphalt shingles. Left untreated, algae, lichen, and moss can significantly shorten your roof's lifespan and void your warranty. GPW COMPANY uses a professional soft-wash method — low pressure combined with a specialized cleaning solution — to safely eliminate biological growth without damaging shingles or voiding manufacturer warranties. Homeowners across Orange County, Los Angeles County, and San Diego County can request a property-specific estimate for safe roof cleaning.
What's Included
- Removes black streaks, algae, lichen, and moss
- Soft-wash method — safe for all shingle types
- Will not void your roof warranty
- Extends roof lifespan by removing damaging growth
- Improves curb appeal and home value
Our Process
- 1
Roof inspection
We assess the roof type, pitch, and level of biological growth before beginning.
- 2
Soft-wash solution application
A professional-grade, biodegradable solution is applied to kill algae, lichen, and moss at the root.
- 3
Dwell time
The solution is allowed to dwell, ensuring complete penetration and kill of all biological growth.
- 4
Low-pressure rinse
We rinse with low pressure to remove all dead growth and cleaning solution, leaving the roof clean and undamaged.
Roof Cleaning — Cities We Serve
We provide roof cleaning across all four regions of Southern California. Click any city to see service details.
Los Angeles County
Frequently Asked Questions
Ready to Book Roof Cleaning?
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