Moss & Algae Removal in Gilroy, California
Moss, algae, and lichen removal from roofs — plus treatment to keep them from coming back. Free estimates, licensed local crews, written warranty.
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Moss & Algae Removal in Gilroy, California
The north slopes of the Gilroy roofs stay in the shade, and the shaded valleys hold the moisture. That is where the moss and the algae build up. Moss and algae removal in Gilroy means clearing the growth before it works into the shingles.
Signs of Moss and Algae on a Gilroy Roof
- Green or dark patches on the north slope — the growth in the shade
- Moss in the valleys and the joints — the damp spots hold the growth
- Black streaks running down the shingles — the algae feeding on the granules
- Lifted or curled shingle edges — the moss roots working under the surface
- Damp, shaded areas near the trees — the canopy feeding the growth
How We Remove Moss and Algae in Gilroy
- Inspect the roof — find the growth and the moisture traps
- Protect the plants — cover the landscaping below the roof
- Treat the growth — apply the cleaning solution that kills the moss
- Soft wash the surface — low pressure rinses the growth away
- Recommend prevention — branch trimming, zinc strips, or both
Moss & Algae Removal Costs in Gilroy
| Service | Typical range | What’s included | Warranty |
|---|---|---|---|
| Moss and algae treatment | $400 – $1,000 | Full treatment and removal | 1 year |
| Roof soft wash | $350 – $900 | Full roof cleaning, low pressure | — |
| Branch trimming | $200 – $600 | Clear the overhanging canopy | — |
| Zinc strip installation | $250 – $600 | Ridge-mounted prevention strip | 5 years |
Expert tip: in Gilroy, the north slope is the problem area. The roofs that face the shade grow the moss back within a season, and the zinc strip is the fix that stops the cycle.
Serving Gilroy and Nearby Areas
We remove moss and algae across Santa Clara County — Gilroy, Morgan Hill, San Jose, and the surrounding South Bay communities.
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FAQ
Frequently Asked Questions
Does Gilroy get moss on roofs?
Some. The north-facing slopes and the shaded valleys hold the moisture, and the growth builds up in those damp spots.
Is moss bad for my roof?
Yes. Moss holds water against the shingles and its roots work into the surface. Over time it lifts the shingles.
How do you remove moss and algae?
We soft wash the surface with a treatment that kills the growth, then rinse it away.
How do I keep the moss from coming back?
Trimming the overhanging branches and keeping the valleys clear helps. A zinc strip at the ridge also prevents the regrowth.
Does moss removal come with a warranty?
Yes. Our treatment includes a one-year warranty against regrowth on the treated areas.
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