To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.
Getting moss off shingle roof.
That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.
2 slide sacrificial zinc strip underneath the loosened shingles.
Hose off and brush all moss loose from your roof shingles.
1 slide a margin trowel under shingles to unstick them from the ones below.
Watch out this is slippery stuff.
Stop roof algae from coming back.
The easiest and cheapest way to kill and prevent moss algae is by using a copper sulfate solution.
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.
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.
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.
If accumulations of algae or moss are heavy at least some of it should wash off the roof surface right away with the stream from the hose.
Then use either a product specifically designed as a roof shingle cleaner or a deck cleaner.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
In this video this old house general contractor tom silva explains how to remove roof moss and prevent it from coming back.
But only use cleaners that have no bleach in them the non bleach restorers for decks work well.
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.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
3 secure the strip with roofing nails.
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.
Don t be tempted to rush getting the moss off faster by having someone power wash your roof or scrub in the bleach solution or brush or scrape off the moss even though you may find advice on.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
To get rid of moss first carefully scrape off any thick moss without scraping hard on the shingles.