Insurance-Critical Service
Expert Roof Cleaning in Gilroy — Moss, Algae & Black Streak Removal
Professional soft-wash roof cleaning in Gilroy, CA — removes moss, algae and black streaks without damaging tile or shingles. Insurance documentation provided on every job.
Starting from $299
Our Work
Every roof cleaning job gets before-and-after photos — the documentation your insurance company needs for policy renewal. Here's what a dirty Gilroy tile roof looks like, and what it looks like after ORS Clean. Serving Eagle Ridge, Glen Loma Ranch, Hecker Pass, Las Animas, and all Gilroy neighborhoods.


We send before-and-after photos and a professional invoice after every roof cleaning — the documentation your insurer needs for policy renewal.
Gilroy Conditions
Gilroy runs hot and dry, so you might not expect roof moss — but the north-facing slopes, the shaded sections under the valley oaks and liquidambars, and anywhere that stays damp tell a different story. That's where moss, algae, and the dark Gloeocapsa “black streaks” take hold on tile and composition roofs, fed by morning dew and the debris that piles up in the shade. Eagle Ridge and the foothill lots, under heavier tree cover, see it fastest.
Left alone it's more than a looks problem: moss lifts tile and works under shingle edges, holds moisture against the roof, and shortens its life. Santa Clara County insurers increasingly flag that growth as deferred maintenance at renewal, and the agricultural dust and pollen that settle in Gilroy only feed it.
We soft-wash — a low-pressure application of a roof-safe treatment that kills the moss, algae, and streaks at the root and then clears the debris — rather than blasting, which strips granules and voids roof warranties. Every job comes with dated before-and-after photos and an invoice for your insurer. Text your address and we'll get you a firm quote in 30 minutes.
How it works
Click Get a Free Quote, provide us your address and we will get you a free quote ASAP.
Matt texts you when he's on the way. We arrive in the scheduled window and assess the roof before starting work.
We assess your roof type first — tile, shingle, metal — and choose the best cleaning method. Every approach is designed to remove moss, algae and buildup without causing damage.
Before-and-after photos and a professional invoice texted directly to you — ready to submit to your insurance company same day.
Why ORS Clean
Full liability coverage on every job. You're completely protected.
Before & after photos on every single visit — documentation you keep.
Professional invoice + before/after photos — exactly what your insurer requires.
Not satisfied? We come back and make it right at no charge.
What Gilroy customers say
"I received a letter from my home owners insurance that I was being canceled due to moss and algae on my roof. I called ORS for a quote to clean my roof. Matt was great to work with. He had me send him my address to review my home on Google earth. He came out the next day to site walk it and determine pricing. I received a quote that evening, and we were scheduled within 3 days. Matt and his crew showed up as scheduled, cleaned my roof and cleaned my solar panels. It’s amazing how dirty my roof actually was, it looks great now! Matt sent me photos of the cleaned roof to submit to my insurance company. I highly recommend Matt and his crew for your cleaning needs."MMMichelle M.Verified Google Review
"Matt did a wonderful job cleaning out our gutters. It was a big job with lots of debris in the gutters. We appreciated the before and after pictures he sent us and the brief follow up after the job was completed letting us know problem areas on our roof and gutters. Overall, he did an excellent job."APAmita P.Verified Google Review
"Matt cleaned my gutters after many years of not cleaning them. He is punctual, respectful and a great communicator keeping me informed of his arrival, details of before and after through photos and texts, and even went over and above by trying to seal a leak in the joint of a gutter. As it had been raining he wasn’t sure the seal would stick, but he said that if it didn’t hold he would swing by after it was dry to use a more powerful seal at no extra cost. After a week of sun, I reached out to him and within 2 days he returned and sealed it up. I now have Matt and ORS on my reminders to schedule him every October to clean our gutters. I highly recommend him for his work ethics and doing a complete job!"PAPaula A.Verified Google Review
Roof cleaning is priced individually — every job depends on roof size, pitch, material type, and moss/algae load. There's no one-size-fits-all price for roof work.
Text (408) 476-3891 with your address and Matt will give you a firm quote within 30 minutes — no visit required before you decide, no obligation.
Common questions
Gilroy's warm summers and wet winters create a cycle that accelerates moss and algae growth on roof surfaces — especially on north-facing sections and under tree shade. Insurance companies serving the Gilroy area, including State Farm, Farmers, and AAA, increasingly require roof cleaning documentation for policy renewal. Agricultural dust from surrounding fields also deposits on roof surfaces, creating a film that retains moisture and encourages organic growth.
Roof cleaning is priced individually based on roof size, pitch, material, and moss load — every job is different. Text (408) 476-3891 with your address and Matt will give you a firm quote within 30 minutes. No visit required before you decide.
Most Gilroy homes need roof cleaning every 2–3 years. Homes in Eagle Ridge and Las Animas with significant tree coverage may need more frequent treatment. If you've received an insurance notice, prioritize scheduling before the renewal deadline.
We assess your roof type before starting and choose the best cleaning method — whether that's soft-wash, low-pressure, or another approach. The goal is always to remove moss, algae and buildup effectively without damaging your specific roofing material. We'll tell you exactly what method we'll use when we quote.
Yes. We provide dated before-and-after photos and a professional invoice after every roof cleaning — exactly what State Farm, Farmers, AAA, and most other insurers require for policy renewal in Santa Clara County. Many Gilroy homeowners hire us specifically after receiving an insurance cancellation notice.
Most single-story Gilroy homes take 1–2 hours. Two-story or larger homes typically take 2–3 hours. We apply the treatment, clear all debris from the roof surface, and walk you through the results before we leave.
Those streaks are a hardy algae (Gloeocapsa magma) that feeds on the mineral filler in asphalt shingles and spreads by airborne spores — it needs shade and dew more than heavy rain, so north-facing and tree-shaded Gilroy roofs get it worst. We soft-wash to kill it at the root so it clears evenly and stays gone longer.
Often, yes. Santa Clara County insurers increasingly flag roof moss and algae as deferred maintenance, and some issue non-renewal notices over it. We send dated before-and-after photos and a professional invoice after every job — exactly the documentation they ask for.
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Tell us what needs cleaning and add a few photos. Matt replies within 30 minutes. No pressure, no obligation.
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