Roof Cleaning & Soft Washing Services
Safe, effective roof cleaning that removes moss, algae, and lichen without damaging your shingles — serving Gig Harbor and the entire Kitsap and Pierce County region.
Moss & Algae Are Destroying Your Roof
The damp, shaded climate of Gig Harbor and Kitsap County creates the perfect environment for moss, algae, lichen, and black streaks to take hold on your roof. Left untreated, moss roots work their way under shingles, lifting them and allowing water to penetrate your roof deck — leading to rot, leaks, and premature roof failure.
Poseidon Exterior Cleaning uses a professional soft washing process — low-pressure application of biodegradable cleaning solutions — to safely kill and remove moss, algae, and lichen from your roof without the high-pressure blasting that voids warranties and damages shingles. Our treatments are safe for asphalt, composition, cedar shake, and tile roofs.
Our Soft Wash Roof Cleaning Process
Inspection
We inspect your roof to assess moss coverage, identify any pre-existing damage, and determine the appropriate treatment solution.
Pre-Treatment
We pre-wet surrounding landscaping and protect plants, gutters, and downspouts before applying our cleaning solution.
Soft Wash Application
Our biodegradable soft wash solution is applied at low pressure, penetrating and killing moss, algae, lichen, and bacteria at the root.
Rinse & Inspection
We rinse the roof and surrounding areas thoroughly, then perform a final inspection to ensure complete coverage and results.
Roof Cleaning Services
Moss Removal & Treatment
Complete moss removal and preventative treatment for asphalt, composition, cedar shake, and tile roofs throughout Gig Harbor and Kitsap County.
Algae & Black Streak Removal
Gloeocapsa magma — the bacteria that causes black streaks — is eliminated with our soft wash process, restoring your roof's original appearance.
Lichen Treatment
Lichen is the most damaging roof organism and the hardest to remove. Our professional-grade solutions kill lichen at the root and prevent regrowth.
Preventative Moss Treatments
Annual or biannual preventative treatments keep moss from returning, extending the life of your roof and protecting your investment.
Roof Cleaning Service Areas
We provide roof cleaning and soft washing services throughout Gig Harbor, Port Orchard, Bremerton, Silverdale, Belfair, Key Peninsula, Tacoma, University Place, and surrounding Kitsap and Pierce County communities.