· Sonoma County's #1 Moss Removal & Roof Cleaning Specialists

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Licensed & Insured
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Moss doesn't just sit on your roof — it grows into it. Roots work under shingles, trap moisture, and slowly lift the protective granules that keep your roof watertight. Most homes in Petaluma, Santa Rosa, and Sonoma under redwood or oak canopy develop visible moss within 2-3 years of their last cleaning, and once you can see it from the street, it's already been working on your shingles for months.
We hand brush carefully without stripping protective granules or damaging your shingles, and can apply a biodegradable, low-pressure soft wash solution that kills moss, algae, and lichen at the root, not just the visible surface after brushing. This treatment is a zinc-based moss inhibitor that prevents spores from taking hold and is the difference between results that last 6 months and results that last 12 to 18 months. Unlike pressure washing, this method won't strip granules from your shingles or shorten your roof's lifespan.
DON'T LET IT GET THIS FAR
High-pressure water on asphalt shingles strips protective granules, voids manufacturer warranties, and can force water under flashing, creating leaks that won't show up for months. Soft washing uses the same gentle pressure as a garden hose, combined with a treatment that does the actual cleaning work.
It's the method roofing manufacturers themselves recommend, and it's the only method we use on any roof, along with careful brushing, regardless of how heavy the moss buildup is.
Most companies show up, spray everything, and leave. Here's what we actually do and why it produces results that last.
Step 01
We inspect your roof type, shingle condition, and moss severity before touching anything — including checking for any existing damage that predates our visit. We protect your gutters, plants, and surrounding areas before we start.
Step 02
Moss is removed by careful hand brushing — no high-pressure washing that could strip protective granules or damage your shingles. For deeper treatment, a biodegradable soft wash solution can be applied to kill growth at the root and prevent regrowth for 12–18 months. This is available as an add-on, priced separately.
Step 03
A gentle rinse clears loosened debris from the roof surface. We hand-clear gutters and roof valleys where buildup commonly collects and gets missed by other crews. Every surface is checked before we move on.
Step 04
We walk you through the results before we leave. Before and after photos are sent the same day — including any insurance documentation you need. You don't sign off until you're satisfied.
Who this is for
Most Sonoma County homeowners in Petaluma, Santa Rosa, and Windsor don't realize how much moss is quietly damaging their roof. If any of these sound familiar, it's time to act.
No. Hand brushing uses low pressure compared to that of a pressure wash. Our soft washing treatment also uses low pressure, the same force as a garden hose, combined with a cleaning solution that does the work rather than brute force. This is the method most shingle manufacturers recommend and require to keep warranties valid.
Yes. We provide before-and-after photos and a written description of the work performed, which most insurers accept for policy reinstatement or renewal requirements.
With our moss-preventing treatment applied after cleaning, most homes stay moss-free for 12 to 18 months, depending on tree coverage and shade exposure.
We serve all of Sonoma County, including Sonoma, Petaluma, Santa Rosa, Rohnert Park, Sebastopol, Windsor, Healdsburg, and surrounding areas.
Mon-Sat · 7am-7pm
Licensed & Insured
Sonoma County

Sonoma County, CA
Mon-Sat · 7am-7pm
Licensed & Insured
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