Cleaning Moss Off Shingle Roofs

A homemade cleaner of one part liquid chlorine bleach to one part of water can also be effective in removing and killing moss that clings to the roof tiles.

Cleaning moss off shingle roofs.

Work on one small section at a time which allows you better control of the brush and your scrubbing motions. You can try brushing off algae and moss with a brush or broom with medium stiff bristles but don t scrub too hard. If you have a consistent problem with mold growth on your roof consult a roofing professional. If chunks of algae or moss or heavy stains remain on the surface after rinsing let the roof dry then spray on the bleach solution again.

Climb up to the roof and begin scraping off dead moss from the shingles using a putty knife or painter s 5 in 1 tool and working from the bottom up. Never use a pressure washer to wash or rinse shingles. The concentrated jet will scrape off the small pebbles on top of the shingles and reduce their water repellency which will only make your mold situation worse. Apply liquid cleaners with a hand pump sprayer or with a pressure washer on the lowest setting so as not to cause any damage to the shingles.

In the seams use the sharp edge of the scraper like a dental pick to force out the moss. You don t want to separate the mineral granules from the shingles. Hose off and brush all moss loose from your roof shingles.