Scrape off the moss.
How to clean moss from roof shingles.
Both algae and moss can be easily removed from asphalt shingles with a 50 50 solution of chlorine bleach and water.
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.
Heavy moss growth can actually form dams that can cause water to back up under the shingles and damage the roof deck.
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.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
But that would only make sense if the shingles were worn out.
The high powered water jets can damage shingles and remove the shingle granules that protect the roof.
Apply a storebought or diy cleaning solution to remove the moss.
It s best to clean moss off a roof as soon as you notice it s growing there.
Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning.
Cleaning asphalt shingles of clumps of moss or algae that have taken root in the roof can feel like an overwhelming endeavor.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
You could replace all the roofing with new shingles dark enough to disguise the staining or with shingles laced with copper granules which are lethal to algae.