Roof soft washing in Sacramento costs $350–$650 for most single-family homes. Price varies by square footage, roof pitch, and algae severity. Two-story homes and steeper pitches cost more due to access and safety requirements. Call (916) 699-7401 for a free photo estimate — no visit required.

Black streaks are caused by Gloeocapsa Magma — a type of cyanobacteria (blue-green algae) that feeds on the limestone filler in asphalt shingles. Sacramento’s warm, humid summers create ideal growth conditions. The dark streaking absorbs heat, increasing your cooling costs and accelerating shingle degradation.

Soft wash only. The ARMA (Asphalt Roofing Manufacturers Association) prohibits pressure washing for cleaning roofs. High-pressure water strips granules from asphalt shingles, voids most manufacturer warranties, and can crack tile. Zillar uses 50–100 PSI water with a biodegradable solution — safe for all roof types.

In Sacramento’s climate, soft wash results last 3–5 years. Because the cleaning solution kills algae at the root rather than just removing surface staining, regrowth is significantly slower than pressure washing (which lasts 6–12 months). Annual inspections recommended after year 3.

Yes. We clean all common Sacramento roof types: asphalt shingles, concrete and clay tile, metal panels, and wood shake. Each material requires different solution concentrations and dwell times, which we calibrate on-site based on roof type and condition.