Moss on the Roof: Moss Killer or Wire Brush?

See green clumps on your shingles? That’s moss on the roof. It holds water and can lift the edges of shingles. Many folks ask: should I use a moss killer or a wire brush?

Here’s the short answer: a light brush can loosen surface growth, but go slow and gentle. A heavy scrub can remove shingle granules. A quality moss killer helps stop roots and spores. It’s safer for shingles than constant scraping.

Don’t use high pressure or hard pressure water on asphalt shingles. It looks clean at first, but it can shorten roof life. When in doubt, call pros for a soft, roof-safe approach.