Bay Area Roof Cleaning — Soft Wash Method, Guaranteed Results
We never use high pressure on roofs. Our soft wash method safely removes moss, algae, and lichen without voiding manufacturer warranties.
Why Soft Wash Only?
High-pressure washing damages roofing materials — it strips granules from asphalt shingles, cracks tile, lifts flashing, and voids manufacturer warranties. Willow Wash exclusively uses low-pressure soft wash technology that lets biodegradable cleaning solutions do the work. The result: a completely clean roof with zero material damage.
Roof Types We Clean
Tile Roof Cleaning
Safe soft wash cleaning for concrete tile, clay tile, and slate roofs. Removes moss, algae, lichen, and bird droppings without cracking or dislodging tiles.
Asphalt Shingle Cleaning
Remove black streaks (Gloeocapsa magma algae), moss, and organic growth from asphalt shingle roofs. Our soft wash method preserves protective granules.
Metal Roof Cleaning
Clean metal roofing panels, standing seam, and corrugated metal. Remove oxidation, staining, and organic growth.
Flat Roof Cleaning
Surface cleaning for flat and low-slope commercial and residential roofs. Remove ponding residue, debris, and organic buildup.
Our Process
Roof Inspection
Visual inspection from the ground and roof access point. Identify moss, algae, lichen, damage, and areas of concern.
Property Protection
Cover landscaping, pre-water plants, and protect any exterior surfaces below the roofline.
Soft Wash Treatment
Apply biodegradable cleaning solution at low pressure. The solution kills algae and moss at the root. Gentle rinse follows.
Final Inspection
Inspect the entire roof from multiple angles. Document results. Walk you through the completed work.
What Sets Us Apart
Never High Pressure
We never use high pressure on any roof. Period. Soft wash only — it's the only method that's safe.
Warranty Compliant
Our methods comply with ARMA (Asphalt Roofing Manufacturers Association) recommended practices.
Kills Growth at Root
Our treatment doesn't just remove visible growth — it kills algae, moss, and lichen at the root to prevent rapid regrowth.
Full Property Protection
Landscaping is covered and pre-watered. Gutters are protected. Nothing below the roofline is harmed.
Equipment & Methods
We invest in commercial-grade equipment and proven techniques so every job gets done right the first time.
Low-pressure soft wash systems (under 500 PSI)
Biodegradable algae and moss treatment solutions
Safety harness and roof access equipment
Gutter protection during treatment
Landscape pre-watering and covering materials
Get Your Free Estimate
Most Bay Area quotes within 24 hours
Common Questions
Everything you need to know about our exterior cleaning services across the Bay Area.
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Learn More →Proudly Serving 36+ Bay Area Communities
Professional exterior cleaning for homes and businesses across the San Francisco Bay Area.
Your Property Deserves the Best Care
Free estimates. Eco-friendly methods. 100% satisfaction guaranteed. Residential and commercial. Let's talk about your project.