How To Clean Moss Off Roof Shingles

Moss can cause the leading edges of the shingles to lift or curl which increases the risk of shingle blow off during wind events.

How to clean moss off roof shingles.

Hose off and brush all moss loose from your roof shingles. Both algae and moss can be easily removed from asphalt shingles with a 50 50 solution of chlorine bleach and water. It s best to clean moss off a roof as soon as you notice it s growing there. Unlike algae moss can be detrimental to asphalt shingle performance.

In severe cases moss build up can cause lateral water movement resulting in moisture damage to the roof deck or may even cause leaks. Before applying a moss remover cleaner use a scrub brush 3 15 the home depot or a long handled soft bristle brush to gently scrape or pluck moss from the roof shingles or tiles. Cleaning asphalt shingles of clumps of moss or algae that have taken root in the roof can feel like an overwhelming endeavor. To learn how to prevent moss and algae from getting on your shingles keep reading.

Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning. For deep stains let the roof dry then reapply the cleaning solution and rinse it off again after no more than 30 minutes. Work on one small section at a time which allows you better control of the brush and your scrubbing motions. Laundry strength bleach is sufficient or you can opt for any of a number of proprietary roof cleaners some of which don t contain.