Roof algae generally have a black green hue.
Getting algae and moss off the roof.
The bleach will kill the algae or moss but rinsing won t necessarily leave the roof sparkling clean.
Scrape off the moss.
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.
Algae grow most often on wood and asphalt shingles or concrete tiles especially if they do not get a lot of sunlight.
Heavy moss growth can actually form dams that can cause water to back up under the shingles and damage the roof deck.
Getting rid of moss lichen and algae june 9 2019 by admin comments are off it might be difficult for you to see all the moss algae lichen and other stuff that can build up around your roof.
Algae will disappear and wash away with subsequent rains the association advises.
You can physically remove the invasive plants with a long handled scrub brush as long as you are careful with 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.
With either method you want to make sure.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
It gets even more costly if the algae and especially moss on the roof is already thick.
Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles.
As a result this kind of roof cleaning job is at the more expensive end of the spectrum with rates reaching as much as 850.
How to clean your roof of moss and algae.
You can also use a pressure washer but that may break sensitive shingles.
The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen.
There are different ways to clean moss and algae off of a roof.
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.
It s best to clean moss off a roof as soon as you notice it s growing there.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye protection.
Getting quotes from competing contractors.
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.
Both algae and moss can be easily removed from asphalt shingles with a 50 50 solution of chlorine bleach and water.