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.
Cleaning moss off shingle roofs.
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.
You don t want to separate the mineral granules from the shingles.
In the seams use the sharp edge of the scraper like a dental pick to force out the moss.
You can try brushing off algae and moss with a brush or broom with medium stiff bristles but don t scrub too hard.
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.
If you have a consistent problem with mold growth on your roof consult a roofing professional.
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.
Never use a pressure washer to wash or rinse shingles.
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.
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.
Hose off and brush all moss loose from your roof shingles.