The roof algae is doesn t harm the shingles but looks bad.
How to get algae off roof.
Most cases of roof algae or fungus start with a single spore finding its way to your home.
You might think that pressure washing is the best way to remove algae.
After all the copper granules are lethal to algae.
Pressure washing can even tear shingles off your roof.
One is to install zinc or copper strips along the entire ridge.
But you don t have a lot to lose by trying it.
Hose off the area with plain water spraying at a downward angle.
Then use a long handled soft bristle scrub brush to remove the moss from the roof scrubbing from the top down to avoid lifting.
But that would only make sense if the shingles were worn out.
There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor.
How to get rid of algae on the roof 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.
Softwashing to remove roof algae moss.
How to clean algae and moss from a roof apply the bleach solution with a garden sprayer.
Don t let the bleach solution stand on the roof for more than 30 minutes or so without rinsing.
A copper strip at the top of the roof can prevent future roof algae.
We use chemical solutions that are approved as safe from shingle manufacturers and a low pressure soft wash technique that doesn t cause damage.
This option only makes sense if the shingles are already worn out and ready to be replaced.
In reality the protection falls short because algae can still feed off humidity when it s not raining.
Thousands of roof on homes and other buildings suffer from black streaks.
There are two ways to slow the regrowth process.
This is the only safe way to effectively remove algae and moss from roof shingles.
To do this mix 50 percent water with 50 percent bleach.
To remove roof algae a solution of oxygen bleach can be applied to the roof shingles and then rinsed off.
Theoretically rainwater picks up algae killing ions and spreads them over the roof.
However the force of the water can cause your shingles to lose their protective granules.
A mixture of trisodium phosphate tsp bleach and water will also remove stains.
Let it stand on the surface for about 20 minutes then rinse it off with spray from a garden hose.
We use a softwashing technique at sherwood roof cleaning power washing to clean roofs here in fairfield county.
A less expensive and less extreme method is to create a cleaning solution for the roof.
How do i get rid of algae.