33 winters of Washington moss. We know your roof.
Constant rain and evergreen shade make moss inevitable on Pacific Northwest roofs. We treat it, remove it, and keep it from coming back—protecting the roof you already paid for.
Why it matters
Moss isn’t just ugly. It’s slowly taking your roof apart.
In the Pacific Northwest, moss thrives in our damp, shaded climate. As it spreads, it lifts and separates shingles, holds moisture against the roof deck, and works its way under the edges—where rot and leaks begin. Left alone, it can take years off a roof that should have lasted decades.
- Moss lifts shingles and lets water underneath
- Trapped moisture leads to rot and premature failure
- A treated roof lasts longer and looks cared-for
- Regular treatment costs a fraction of a new roof
A real job site
This is what we get called out to.
What we do
Complete roof moss care
Organic Roof Moss Treatment
All organicWe treat moss with sodium bicarbonate—an all-organic, all-natural formula. No zinc, no zinc strips, no harsh chemicals. Tough on moss, gentle on your roof, your garden, and the runoff that hits the ground below.
Moss Removal
Careful hand and soft-brush removal of built-up moss and debris—no aggressive pressure washing that voids your roof warranty.
Roof & Gutter Cleaning
Clearing moss, needles, and grime from the roof surface and gutters so water drains the way it should.
Prevention & Maintenance
Once your roof is clear, we set up a simple maintenance schedule so moss doesn’t creep back. Treat it right once, then stay ahead of it.
How we work
Careful, honest work—the way it’s been for 33 years.
We don’t blast your roof with a pressure washer and call it done. We inspect, treat the moss properly with our all-organic sodium bicarbonate formula, remove buildup by hand where it’s needed, and set your roof up to stay clear. You get a straight answer about what your roof actually needs—nothing more.
- 1
Inspect
We walk the roof and tell you honestly what it needs.
- 2
Treat
All-organic sodium bicarbonate treatment applied where it counts.
- 3
Remove
Gentle removal of buildup—no warranty-voiding pressure.
- 4
Prevent
A simple maintenance schedule so it stays clear.
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roofmosswashington.com
Moss on your roof? Let’s take a look.
A quick call gets you a free, no-pressure estimate. Three decades of Washington roofs say we can help.
Call (425) 647-3059