To remove moss you first have to kill it.
Moss on roof shingles.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
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Hose off and brush all moss loose from your roof shingles.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
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.
Scrape off the moss.
The cost depends on the size of your roof the amount of moss and the labor rates in your area.
The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water.
Moss and lichens are more than a cosmetic issue on many kinds of roofing materials asphalt shingles roll roofing wood shingle roofs wood shake roofs.
As a rule of thumb professionally removing moss will cost about 5 of what it would take to replace your roof altogether.
Use a solution of bleach vinegar or dish soap for this.
While a small layer of thin moss isn t too troublesome large clumps of moss can degrade shingles get beneath them and create opportunities for leaks.
By holding moisture against the roof surface lichens but more so moss speed the wear of the asphalt shingle surface in freezing climates by increasing frost damage to the mineral granule.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
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.
When the moss is dead scrub it off then install zinc flashing to prevent more moss growth.
Moss growth can create several problems on shingle roofs.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye protection.