How To Remove Moss From Shingle Roof

Moss is a common problem on asphalt shingle roofs throughout the Fraser Valley. Our damp climate, frequent rainfall, shaded properties, and surrounding trees create ideal conditions for moss to grow and spread. While a small amount of moss may seem harmless at first, established growth can hold moisture against the roof, work its way underneath shingles, and contribute to premature deterioration. Removing moss properly can help protect your shingles and extend the service life of your roof.

The most important thing to understand is that moss should not be removed from asphalt shingles using high-pressure washing. Pressure washing can strip away the protective granules on the shingles, force water underneath the roofing material, and potentially cause expensive damage. Aggressively scraping or brushing the roof can create similar problems.

A safer approach begins with carefully removing loose or heavy moss using gentle methods that minimize contact with the shingles. A professional roof cleaning solution can then be applied to kill the remaining moss, algae, and organic growth at the source. Rather than attempting to blast every trace of moss off immediately, the treatment kills the growth so the remaining material can gradually loosen and weather away without unnecessary damage to the roof.

Roof cleaning chemicals also need to be applied carefully. Plants, lawns, siding, gutters, and other surfaces around the home should be protected during the cleaning process. Proper dilution, controlled application, and thorough property rinsing are important parts of safely treating a roof.

We do not recommend pressure washing asphalt shingles. Although high pressure can make a roof appear clean quickly, it can remove protective granules and shorten the lifespan of the shingles. Moss removal should focus on killing the organic growth rather than using excessive pressure to force it off.

If you have moss growing on your roof in Chilliwack, Abbotsford, Mission, Langley, Agassiz, Hope, or surrounding Fraser Valley communities, contact Two Clean Bros for a free roof cleaning quote. We can assess the condition of the roof, determine the appropriate treatment, and help remove the moss without relying on damaging high-pressure washing.