Premium roof preservation for the Pacific Northwest. Moss removal, soft washing, and quiet, careful stewardship of one of the biggest investments you own.
We work quietly and carefully — reading each roof before we treat it, choosing methods that respect the material, and thinking in years rather than jobs. The result is a home that stands longer, weathers better, and looks the way it should.
Every service is designed to extend the life of the material — not shorten it.
Soft-wash methods and roof-safe treatments that respect the home beneath the moss.
A preventative approach that keeps your roof out of early replacement.
A short, considered list of what we do. Each service is chosen because it extends the life of the home — nothing more, nothing less.
Killed at the root with a roof-safe treatment — no shingle damage, no granule loss.
Low-pressure biodegradable cleaning that preserves the material beneath.
Hand-cleared, flushed, and inspected so water goes where it should.
Seasonal applications that keep growth from coming back.
Annual care that extends the life of the roof over your home.
We're a small, owner-operated crew based in Portland. Every roof is treated by the people whose name is on the truck — which is why we stand behind our work with a three-year moss warranty and a genuine interest in your home's long-term health.
A note on timing: treated moss naturally sheds over 3–6 months as weather works it loose. The roof gets better with every rain.
Verified reviews on Google and Thumbtack from homeowners across the Portland metro.
"Moss Boss did an amazing job on our roof. They were on time, professional, and explained that the dead moss would shed off over the next 3-6 months. Sure enough, by summer it was gone. The 3-year warranty gave us total peace of mind."
"Best roof cleaning experience we've had. They explained the soft wash process, protected our plants, and set clear expectations that the moss would take a few months to fully shed. Honest, professional work."
"Quick to respond, fair pricing, and the team was super friendly. They were upfront that the dead moss takes time to fall off naturally — no scraping that could damage shingles. Already noticing a big difference. Will use again every year."
"Locally owned and it shows — they actually care. No pressure sales, just honest work. Moss is dead and they treated it so it stays gone. They told us it'd take a few months to fully shed and that's exactly what happened."
"Got 3 quotes and Moss Boss was the most knowledgeable by far. They explained that soft wash kills moss at the root and the dead moss falls off over 3-6 months — no shingle damage from scraping. Made total sense."
"Punctual, polite, and thorough. They cleaned up everything when they were done. Honest about the timeline — moss is dead now, rest will shed naturally with rain over the next few months. You can tell they take pride in their work."
