The cost depends on the size of your roof the amount of moss and the labor rates in your area.
Moss as a roof.
The seams between the shingles and the shingles edges also develop moss because they tend to be especially shaded.
To remove moss you first have to kill it.
Cup oxygen bleach.
The bleach will kill the algae or moss but rinsing won t necessarily leave the roof sparkling clean.
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.
Use a solution of bleach vinegar or dish soap for this.
As a rule of thumb professionally removing moss will cost about 5 of what it would take to replace your roof altogether.
Moss growing on a roof lifts the shingles and allows water to seep underneath and rot the roof deck.
Hose off and brush all moss loose from your roof shingles.
Algae will disappear and wash away with subsequent rains the association advises.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
Moss can lift up shingles exposing the roof to moisture which allows rot to form.
Moss retains moisture which could pose a problem for wood shingles where rotting and decay could occur.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye protection.
Moss on your roof isn t just an ugly problem.
Moss on a roof begins with a thin dusting of green that you may notice only from low angles.
Whether you like the way it looks or not moss will greatly reduce a roof s lifespan.
However you can quickly fix the issue with this homemade moss killer for roofs.
1 slide a margin trowel under shingles to unstick them from the ones below.
In this video this old house general contractor tom silva explains how to remove roof moss and prevent it from coming back.
Remove moss from your roof as soon as you see it and don t let it become a much bigger problem in the.
While moss is typically not harmful it could cause minor damage to a roof.
When the moss is dead scrub it off then install zinc flashing to prevent more moss growth.
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.
It s also a dangerous one.