Moss holds water against your shingles and pries them up as it grows. The fix isn't a pressure washer — that strips granules off asphalt shingles. It's treatment that kills moss at the root, then a gentle clear once it's dead.
Book a treatmentWe don't pressure-wash asphalt shingle roofs, and we'll tell you if someone else shouldn't either.
On asphalt shingles, pressure washing strips the protective granules and shortens the roof's life. Treatment first, gentle removal after — slower, but it's the version that doesn't cost you a roof.
Any dry stretch works. Spring is ideal — it knocks moss down before the growing season, and it's when we run treatment routes on the Year-Round Plan.