Soft Wash Roof Cleaning and Moss Removal
Moss Doesn’t Just Look Bad — It Shortens the Life of Your Roof
Roof moss removal & soft washing in Castlegar, Trail & Nelson
Safe soft-wash moss and algae removal for asphalt roofs. No high pressure — we clean gently so you protect the roof, not wear it out. Serving Castlegar, Trail, Nelson, and nearby.
What’s included
Every soft-wash visit includes gentle moss and algae removal, clearing of loose roof debris where we can safely reach, and care to protect shingles and finishes. We can also apply a preventative treatment to slow regrowth. No high-pressure washing that can damage roofing.
Got a Moss Problem?
Don’t wait until moss causes roof damage. A quick inspection and soft-wash treatment can save you thousands in repairs.
Our Moss Removal Process
Gentle on your shingles, thorough on the moss
We follow the cleaning method recommended by the Asphalt Roofing Manufacturers Association (ARMA), the industry group for asphalt shingle makers.
- Inspect the roof. We check how much moss there is, where it's growing (usually the shady, north-facing side),and whether any shingles are lifting or curling.
- Protect your yard. We cover or pre-wet plants and landscaping around the house before we start.
- Clear the loose moss and debris. This is done gently, never with a pressure washer, which ARMA warns strips granules off shingles and can shorten a roof's life.
- Treat the remaining moss and spores. We apply a moss treatment and let it soak in to kill what's left at the root.
- Rinse at low pressure, so no treatment is left behind.
- Give it time to come down. The treatment kills the moss right away, but here in the Kootenays it can take several weeks to a few months for the dead moss to loosen and wash away with the rain. Your roof will look better gradually, not overnight. That's normal, and it's gentler on your shingles than scraping or pressure washing. Heavy growth may need a second treatment.
- Recommend next steps. Moss and debris often end up in the gutters, so every moss quote includes a separate estimate for gutter cleaning. We'll also point out any branches worth trimming so the roof gets more sun.
We do moss treatment from spring to late summer, when the weather lets the treatment work properly.
