Roof Power Washing

Expert Roof Power Washing in Southern California

Algae, moss, lichen, and accumulated debris are more than cosmetic problems. Left untreated, organic growth holds moisture against roofing materials and accelerates deterioration. Algae on asphalt shingles consumes the limestone filler in the granules, reducing their lifespan. American Highland Roofing provides professional, material-safe roof cleaning services.

What to Expect from Our Process

We use a low-pressure soft wash technique — not a high-pressure blast that forces water under tiles and damages shingles. Our biodegradable cleaning solution kills algae and moss at the root level and slows regrowth for one to three years. We protect your landscaping, gutters, and siding during the cleaning process and leave your roof and property cleaner than we found it.

Signs You May Need Roof Power Washing

• Black streaks or green discoloration on shingles or tiles
• Visible moss or lichen growth (especially on north-facing slopes)
• HOA or buyer requesting cleaned roof condition
• Prepping roof for inspection or certification
• Annual maintenance to extend roof lifespan

Why Choose American Highland Roofing?

• Licensed C-39 Contractor — verifiable on the CSLB website. We pull all permits and work within California code on every project.
• Fully Insured — general liability and workers’ compensation on every job. You are protected if anything unexpected happens.
• Written Estimates — itemized, photo-documented, and delivered with no pressure. No bait-and-switch pricing.
• 10-Year Workmanship & Labor Warranty — every full roof replacement is backed by our 10-year warranty on workmanship and labor, plus manufacturer material warranties in writing before work begins.

Ready to get started? Request a free estimate online or call (951) 463-1512 — we serve all of Southern California.