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Scraping a thick mat of moss off asphalt shingles on a Nanaimo BC roof, cleared section visible

Nanaimo Roof Moss Removal

Green space in Nanaimo is not on the edge of the city, it runs through the middle of it — Bowen Park along the Millstone, Buttertubs Marsh, Westwood Lake under Mount Benson. A roof’s moss problem here is largely a question of which of those it sits near.

Local Conditions in Nanaimo

Parkland Threaded Through the Middle of the City

Bowen Park runs 36 hectares along the Millstone River, with interpretive trails, a waterfall and a rhododendron grove of more than 350 species. Buttertubs Marsh is a bird sanctuary of about 40 hectares with a 46-acre conservation area inside it. Westwood Lake Park covers roughly 129 hectares on the lower slopes below Mount Benson, and Mount Benson Regional Park protects 292 hectares of forest above that. None of those sit on the outskirts. A lot backing onto one of them takes a continuous fall of needles and fine debris rather than a seasonal one, and that debris is what holds water against a shingle long enough for moss to root into the mat. Removal is deliberately slow: the moss is treated, left to die and allowed to weather off over the following months, because pulling or blasting it takes the granules with it and shortens the roof to make it tidy on the day.

  • Winters mild and damp rather than frozen, so moss and algae never get knocked back

Where We Work in Nanaimo

HarewoodNorth Nanaimo

Landmarks nearby: Duke Point ferry terminal · Newcastle Island (Saysutshun) · Protection Island

Commonly Asked

It can, and that is the right question to ask before booking anyone. Paint of that era is usually chalking on the sun-facing walls, the lap joints have opened, and pressure will both strip paint and drive water in behind the boards where you cannot see it drying. That house wants a soft wash — the cleaning solution doing the work, at a pressure closer to a garden hose than a pressure washer — with the runoff controlled, because on a pre-1960 house you have to assume there is lead in the older layers. If a quote for a heritage house downtown does not mention pressure at all, ask what pressure they intend to use.

Get a Nanaimo Price

Describe the roof moss removal you need, or send a photo, and we'll work it out from there.