Hose off and brush all moss loose from your roof shingles.
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.
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.
You can try brushing off algae and moss with a brush or broom with medium stiff bristles but don t scrub too hard.
You don t want to separate the mineral granules from 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.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
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.
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.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.