Roof cleaning (low-pressure) — San Rafael
Treat moss and algae on composition shingles without granule loss.
Redwood shade and bay humidity encourage moss on roofs and algae on decks. We favor low-pressure roof systems and wood-safe cleaners for siding and fences, with careful plant protection along foundation beds. Walking every roof isn’t always necessary or wise. Where appropriate, we apply manufacturer-aligned treatments that target gloeocapsa magma streaks and moss at the edges, then rinse gently or let rain finish the cycle per product guidance.
Why homeowners call us
- Focus on longevity of shingles—not a cosmetic blast that voids warranties
- Gutter face and downspout outsides rinsed when roof package is selected
- Honest assessment if mechanical removal is safer deferred to a roofer
How we work
- 1
Roof type check
We confirm material, age, and obvious damage before quoting treatment.
- 2
Edge and moss work
Careful detail on heavy moss at leading edges; protect landscaping below.
- 3
Treatment and rinse plan
Application per slope; rinse timing matched to slope and drainage.
Other services in San Rafael
Roof cleaning — San Rafael
Bundle with house washing or driveway cleaning and save on mobilization.