Treatment is what keeps moss from coming straight back on a Kent roof. We apply targeted solutions that break moss and algae down at the root and leave a surface that resists regrowth.
Timed around our October to March moss season, a yearly treatment keeps your roof ahead of the growth that thrives in Kent's constant moisture. We protect your landscaping throughout the process.

Our treatment breaks moss and algae down at the root rather than just clearing the surface.
We treat before the heavy wet season so your roof stays protected when moss grows fastest.
We pre-wet and rinse surrounding plants so your landscaping stays healthy during treatment.

Our service reaches well beyond Kent into the neighboring communities where the same wet climate drives heavy moss and algae growth. Whether your home backs up to greenbelt in Covington or sits on an open lot in Federal Way, we bring the same careful soft wash approach to every roof.
Frequently Asked Questions
Roof Cleaning can be complex, and we’re here to provide answers to common questions. Here are some frequently asked questions from our clients.
With our wet Western Washington climate, most Kent roofs benefit from a professional cleaning every 18 to 24 months. North-facing slopes and roofs shaded by Douglas firs hold moisture longer, so they often need attention sooner to stop moss from rooting under shingles.
We use a low-pressure soft wash with treatments that break down moss and algae at the root rather than blasting them off. High pressure strips granules from composition shingles and splits cedar shakes, so for Kent roofs we rely on chemistry and gentle rinsing, not force.
Kent sits in a high-rainfall pocket of King County with long damp seasons from October through March. Cool temperatures, tree cover, and constant moisture create ideal conditions for moss, algae, and lichen, especially on shaded and north-facing sections of a roof.
Yes. Moss traps water against the roof deck and lifts shingle edges, which leads to rot and early failure. Removing growth and applying preventive treatment protects the underlayment, helps preserve manufacturer warranties, and adds years of usable life to the roof.
We do. Cedar shake, composition shingle, metal, and tile all behave differently, so each gets a tailored approach. Cedar needs careful low-pressure work to protect the wood, while metal and tile in the Kent area respond well to targeted soft wash methods.
We take care to protect the plants and gardens around your Kent home. We pre-wet vegetation, control runoff, and rinse surrounding areas after treatment so your landscaping stays healthy while the moss and algae on the roof are dealt with properly.
We apply a targeted solution that breaks down moss and algae at the root and creates a surface that resists regrowth through Kent's long wet months.
For most Kent homes an annual treatment keeps moss in check, with shaded or tree-covered roofs sometimes needing a touch-up before the fall rains arrive.
We pre-wet landscaping, manage runoff, and rinse surrounding areas, keeping the plants and pets around your home protected during the treatment.
Late spring and early fall work best, treating before the heavy October to March moss season takes hold across the Kent area.
Schedule Roof Moss Treatment Today
We pride ourselves on delivering great results and experiences for each client. Hear directly from home and business owners who’ve trusted us with their Roof Cleaning needs.

They cleared years of moss off our north-facing roof in Kent and treated it so it has stayed clean through two wet winters. Careful, professional work from start to finish.
Marcus Holloway

Our cedar shakes looked rough until this crew soft washed them. No damage, no high pressure, just a clean roof and honest advice about keeping it that way.
Priya Raman

Booked the moss treatment and gutter cleaning together. They protected our landscaping the whole time and the black streaks on our roof are completely gone.
Devon Castellano
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