Stop the rot. Secure your home's most critical asset.
Is Moss Killing Your Roof? Trusted Moss Removal in Vancouver WA
In the Pacific Northwest, moss isn't just an eyesore — it's a structural threat. Our professional soft-wash treatment kills moss at the root and prevents regrowth for up to 2 years.
The Reality of PNW Moss
More Than Just A Green Surface
Pacific Northwest humidity creates a breeding ground for Bryophyta (moss). What looks like a patch of green is actually a biological sponge anchored into your shingles.
Hydrostatic Pressure & Shingle Lift
As moss thickens, it creates hydrostatic pressure that physically lifts shingle edges. This breaks the factory seal and allows wind-driven rain to enter the underlayment, leading to deck rot — a problem we see constantly on north-facing roofs in Ridgefield and Camas.
The Freeze-Thaw Trap
Moss acts as a moisture sponge. During Vancouver and Portland winters, this water freezes and expands inside your roofing material, accelerating granule loss and causing shingles to crack and flake.
Moss roots penetrating asphalt granules, stripping 5-10 years of roof life.
Moss vs. Algae vs. Lichen
Most homeowners confuse these three threats. Our certified soft-wash techs identify exactly what is feeding on your roof and apply targeted treatments for each.
Bryophyta (Moss)
Thick green growth. Retains 10x its weight in water. Risk: Structural deck rot.
Gloeocapsa Magma (Algae)
Black streaks or stains. Feeds on limestone filler in shingles. Risk: Granule loss & overheating.
Lichen
Hard, crusty spots. Roots are impossible to wash off. Risk: Permanent shingle scarring.
Proven Results
The Transformation Report
813+ Local Homeowners Protected
"The moss was literally lifting my shingles up. All Seasons came out, did a full treatment, and now my roof looks like it was just laid yesterday. No damage, just clean shingles."
Robert B.
Camas, WA Homeowner
5-10yr
Life Extension
100%
Warranty Safe
Deep Cleanup
Our Roof Cleaning Process
Inspect
We start with a thorough roof inspection to assess the extent of moss growth, check for underlying damage, and identify trouble spots where moisture collects.
Treat
We apply a professional-grade, eco-friendly moss treatment solution that penetrates deep into the root system, killing moss at the source without damaging your shingles.
Remove
Using gentle soft-wash techniques and careful hand-removal, we clear all dead moss and debris from your roof surface, valleys, and ridgelines.
Prevent
We apply a long-lasting preventative treatment that inhibits future moss regrowth, including zinc-based solutions that protect your roof for months after service.
Protect
A final walkthrough ensures your roof is clean, gutters are clear, and we provide maintenance recommendations to extend the life of your roof between treatments.
Why All Seasons?
We aren't general cleaners. We are PNW Exterior Specialists. We understand the specific biology of Oregon and Washington moss and the precise chemistry required to neutralize it without harming your family or pets.
What Your Neighbors Say
Vancouver • Portland • Camas • Beaverton
Worked all day to clean not just my roof but my little out building as well. Trimmed back branches that were hanging over the buildings. It was a bi...
Did a great job and was very polite.
I had moss and a lot of dirt accumulated on my 2 story roof. All Seasons did a fantastic job of sweeping off all the gunk then they treated the roof ...
I first met with Ben from All Seasons for landscape maintenance and gutter cleaning. Ben is enthusiastic, knowledgeable and thorough. This company is...
Very efficient and clear communication from scheduling to quotes to payments.
Very happy with the work completed by All Seasons. Our roof and gutters look amazing. Their two technicians, Vova and Ivan, were complete professi...
David and Ruslan did an excellent job on my mossy roof and throughly clogged gutters. They were on the roof all day and didn’t stop until after dark t...
The team was on time and transparent about prices. I also enjoyed their invoice breakdown with before and after pictures. Our gutters and our dryer ve...
Great customer service from start to finish. The team was timely, communicative, friendly, and respectful throughout the entire process. We especially...
Had a dryer cleaning done. I suspected the duct under the house became clogged, then the previous owner ripped the duct from the wall instead of remov...
I was very pleased with the service that I received from All Seasons Cleaning Services. Their crew called to let me know that they were on the way be...
The technician took his time and cleaned the roof, gutter guards and the gutter. They were piled up with pine needles, leaves, and twigs so it wasn't ...
Very professional. Like results. Thank you.
Gutter, roof cleaning. Replace some shingles and rusty nails. Last year tree cutting and plant trimming.
All Seasons did an amazing job cleaning the moss from my roof and treating the roof to prevent regrowth. They cleaned up all of the roof debris and le...
All Seasons did a great job of safely removing three very large trees adjacent to my yard fencing. They cleaned up the site well, communicated clearl...
I couldn’t be happier with the service from All Seasons! They did a fantastic job cleaning the moss off my roof and clearing out my gutters. They insp...
All Seasons came to do a 5-step roof cleaning and after the roof inspection 3 important issues were added that needed repairs. David was very eff...
I just want to take a minute to write a review because good work deserves to be recognized. I needed to have my roof cleaned due to extensive moss bui...
Very professional, & with great communication. We will definitely be using their services in the future.
The Bottom Line
- Moss traps moisture against your shingles, lifting edges and accelerating rot — cutting years off your roof's lifespan.
- Our zinc sulfate soft-wash treatment kills moss at the root and prevents regrowth without damaging shingles or voiding warranties.
- Treatment prevents regrowth for 1-2 years, depending on shade and moisture levels around your roof.
- Most homes cost between $350 and $750, based on roof size and how heavy the moss growth is.
- Free estimates — call (360) 609-7035
Moss Strategy FAQ
Understanding the science and logistics of roof maintenance in the PNW.
