A Clean Roof Without the Pressure — Roof Cleaning in Seattle, WA
Gentle soft-wash roof cleaning and moss removal that lifts years of Seattle green off your roof — no pressure washer, no broken tiles, no damage. Just a roof that looks new again.
Roof Cleaning, Done Gently
Soft-wash cleaning, moss removal, and the treatments that keep it from coming back.
Seattle's Roof Cleaning Specialists
In a climate this wet, every north-facing roof grows moss — and most homeowners either ignore it until it causes leaks or hire someone who blasts it off with a pressure washer and destroys the roof in the process. Mossaway does it the right way: gentle soft-wash cleaning, moss killed at the root, and prevention that lasts. Nine years, one specialty, thousands of Seattle roofs saved.
- ✓Soft-wash only — never high-pressure
- ✓Moss killed at the root, not just scraped
- ✓Roof-safe, plant-safe treatments
- ✓Licensed, insured & local
Seattle Roofs, Brought Back
Easy, Gentle, Guaranteed
Free, Fast Quote
Send a photo or we'll swing by — you get a clear, flat quote for cleaning, moss removal, and prevention.
Gentle Soft-Wash
We clean with low pressure and roof-safe treatment, protecting your tiles, plants, and pets throughout.
Moss Kept Away
We finish with prevention that keeps the moss from creeping back through the next wet Seattle winter.
Is Your Roof Turning Green?
Get a free quote for gentle soft-wash cleaning and moss removal — before the moss turns into a leak.
Moss Is a Roof-Killer, Not Just an Eyesore
That green carpet isn't only ugly — moss holds water against your roof, lifts shingles and tiles, and works its way under them until it leaks. In Seattle's climate it grows back fast if you only scrape the surface. Killing it at the root and preventing regrowth is the difference between cleaning your roof once and replacing it years early.
- ✓Moss traps moisture and rots the roof
- ✓It lifts shingles and tiles until they leak
- ✓Scraping alone lets it grow right back
- ✓Root treatment + prevention protects the roof
Seattle Homeowners on Mossaway
Our north-facing Ballard roof was a carpet of moss and I was sure we needed a whole new roof. Mossaway soft-washed it, treated the moss, and it looks ten years younger — no pressure washer, no broken tiles. Saved us a fortune and the moss hasn't come back.
These guys are the real deal. They explained why pressure washing wrecks a roof and used a gentle soft-wash instead. The roof and gutters are spotless, the moss is gone, and they left the yard cleaner than they found it. Booking them every year now.
Fast quote, on-time, and the before-and-after is unreal. Our roof went from green and black to looking brand new in an afternoon. The moss-prevention treatment is worth every penny in this climate.
Roof Cleaning FAQs
Isn't pressure washing the best way to clean a roof?
No — it's one of the worst. High pressure strips the protective granules off shingles and cracks tiles, taking years off your roof. We use a low-pressure soft-wash with roof-safe treatment that cleans just as thoroughly without the damage.
Will the moss just grow back?
Not the way we do it. Scraping only removes the surface and leaves the roots, so it returns fast in Seattle's wet climate. We kill the moss at the root and apply prevention (like zinc strips and treatment) so it stays gone far longer.
Are your treatments safe for my plants and pets?
Yes. We use treatments that are tough on moss and algae but safe for your landscaping, pets, and family, and we protect and rinse surrounding plants as part of the job.
How often should a Seattle roof be cleaned?
In our climate, most roofs benefit from a cleaning and moss treatment every two to four years, depending on shade and tree cover. A prevention treatment stretches that interval considerably.
Do you clean gutters too?
Yes — clogged gutters undo a clean roof, so we clear and flush them as part of most jobs, or on their own. A clean roof and clear gutters work together to protect your home.
Get a Free Roof Cleaning Quote
Tell us about your roof and how much moss you're seeing. We'll get you a flat quote for gentle soft-wash cleaning, moss removal, and prevention — often same day.
- Visit usSeattle, WA 98103
- Call us(206) 555-0163
- Email ushello@mossaway.com