Whatcom County roofing
Moss Treatment & Roof Cleaning in Whatcom County
Kill the moss, protect the roof — the PNW way, without a pressure washer.
Moss is the number-one roof killer on shaded Whatcom County roofs. It traps water against the shingles, lifts them, and rots the deck below. Our damp, tree-shaded north slopes — thick under the firs from Silver Beach to the Mount Baker foothills — grow it fast.
We treat moss with the right products and gentle low-pressure methods. We never use a high-pressure washer — it strips granules and voids shingle warranties. To keep moss from coming back, we add zinc or copper strips near the ridge. Every rain releases ions that stop new moss and algae.
The local difference
On shaded, conifer-lined Whatcom lots — and anywhere up in the foothills — moss is a when-not-if problem. A yearly treatment costs a fraction of the deck rot it prevents.
What’s included
- Low-pressure, granule-safe cleaning (no pressure-washing shingles)
- Targeted moss & algae treatment
- Zinc / copper ridge strips to prevent regrowth
- Gutter clearing & debris removal
- Annual maintenance plans for shaded roofs
Typical price range
$400–$1,600
Gentle treatment + cleaning for an average roof. Heavy moss, steep pitch, and multi-story access raise the range.
General estimate for a typical Whatcom County home — not a quote. Inspections & written estimates are free.
Where we do it
Moss Treatment & Roof Cleaning across Bellingham, Ferndale, Lynden, Blaine, Everson & the Mount Baker foothills — all of Whatcom County, WA.
