Lopez Island · Lopez Village
Moss Treatment & Roof Cleaning on Lopez Island
Kill the moss, protect the roof — the PNW way, without a pressure washer. Serving Lopez Village, Fisherman Bay, Mud Bay, Richardson.
San Juan Roofing Co. provides moss treatment & roof cleaning for homes across Lopez Island, from Lopez Village, Fisherman Bay, Mud Bay to Richardson. Flatter and more open, Lopez roofs bake in more sun but still face salt air off Fisherman Bay. Metal and long-life shingle systems shine here.
Moss is the number-one roof killer on shaded island roofs. It holds moisture against the shingles, lifts them, and rots the deck underneath. Our damp, tree-covered north slopes on Orcas and San Juan grow it fast.
Why moss treatment & roof cleaning matters on Lopez Island
Open pasture exposure on Lopez means wind uplift on ridges and rakes — we detail edges for it. Under Orcas’ firs, moss is a when-not-if problem. A yearly treatment costs a fraction of the deck rot it prevents.
What our Lopez Island moss treatment & roof cleaning includes
- 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
Lopez Island price range
$400–$1,600
Gentle treatment + cleaning for an average roof. Heavy moss, steep pitch, and multi-story access raise the range.
Estimate for a typical Lopez Island home — not a quote. Free on-island inspection gives your real number.
Real Lopez Island roofing questions
“I'm buying a place on Lopez and my agent wants a roof report before closing. Can you get out there and turn it around fast?”
Yes — real-estate roof reports are something we do a lot of on the islands. We inspect the roof, flashing, and accessible deck, photograph everything, and give you a written report you can hand your agent and lender. We prioritize these so they don't hold up your closing, even on Lopez or the outer islands.
“My place sits out in open pasture and the wind just hammers the ridge and the rake edges. How do you keep a roof from lifting out here?”
Exposed, open sites need a tighter fastening schedule and proper edge-metal detailing — that's where uplift starts. On metal we increase clip density at the perimeter and ridge; on shingles we hand-seal the perimeter courses and use a higher wind-rated product. It's a detailing problem, and it's exactly the kind of exposure we build for here.
Learn more about our moss treatment & roof cleaning service, or see all roofing on Lopez Island.