Is Your Roof Looking Old Before Its Time? Roof Cleaning in Portland, OR
Moss, algae, lichen, black streaks, and built-up debris make a Portland roof look old and wear it out early. We brush it all off by hand, never pressure washing, so your shingles stay intact. Licensed and insured in Oregon.
The Cost of Waiting
The Real Cost of Putting Off Roof Cleaning in Portland
Granule Loss & UV Damage
Algae and moss feed on the shingle surface in Portland's damp climate, loosening the protective granules. Once they wash into the gutters, the shingles lose their UV and weather protection.
Water Intrusion & Rot
Moss roots anchor into the shingle mat and lift the edges, letting wind-driven rain reach the roof deck. The result is rot, leaks, and repairs that cost far more than a cleaning.
Real Portland Results
Before & After
“All Seasons did some roof cleaning on our home in the Happy Valley area. I would highly recommend this company. Paul had great knowledge. If you are looking for a company that keeps their word and does the job they say they will do, choose All Seasons!”
James Campean
Happy Valley, OR
5-10yr
Life Extension
Brush-Only
Shingle-Safe
Real Portland, OR roof cleaning. Moss, algae, and black streaks brushed off, shingles restored.
Our Methodology
Our 5-Step Roof Cleaning Process
- 1
Step 1: Inspection
We always start by taking a close look at your roof. This inspection helps us find any moss, algae, or debris that has built up. We check for problem spots like cracked shingles or areas where moss is growing thick.
- 2
Step 2: Safe Moss Brushing
Next, we carefully brush the roof to remove about 80% of the moss and debris. We use soft brushes to avoid damaging your roof's shingles while still getting rid of most of the moss.
- 3
Step 3: Cleanup
After brushing, we use backpack blowers to clean away the remaining dirt, moss, and algae. We also include a quick cleanup of any mess created during our work.
- 4
Step 4: Preventative Treatment
Once the roof is clean, we apply a professional-grade moss preventative. This treatment kills any remaining moss spores and creates a protective barrier that helps stop moss from growing back.
- 5
Step 5: Treatment Activation
To finish the process, we activate the moss treatment. This happens naturally with rain, but if the weather stays dry, we'll hose down the roof to make sure the treatment gets to work. It may take 2 to 4 weeks for the moss to fully disappear.
Why Portland Homeowners Choose All Seasons
We have cleaned roofs across the Portland metro for over a decade, from Beaverton and Hillsboro to Lake Oswego, Happy Valley, and Gresham. The roof is the most expensive surface on the house, so the method matters. We clean the entire roof by hand, lifting moss, brushing back algae and lichen, and clearing the debris out of the valleys, all without the pressure washing that tears the granules off asphalt shingles. We work carefully around skylights, flashing, vents, and gutters, and we clean up every bit of debris before we leave. You get an honest read on the roof's condition, photos of anything that needs attention, a clear quote, and no pressure to add services you do not need. If your roof is prone to heavy moss, we will tell you whether an ongoing moss treatment is worth it to keep it clear, but only if your roof actually needs one.
Trusted Across the Portland Metro
Ready for Roof Cleaning in Portland?
Free quotes, local crews, and work backed by our satisfaction guarantee. Serving Beaverton, Gresham, Hillsboro, Lake Oswego, Happy Valley, Tigard.
11150 NE Weidler St suite 8, Portland, OR 97220Roof Cleaning in Portland FAQ
Common questions from Portland-area homeowners.