The only way to take care of it is to use a high base chemical solution like zinc sulfate.
How to kill algae on roof shingles.
The algae can form w here moisture tends to dwell on roof surfaces.
Here are some major roofing manufacturer s warranty statements.
Roof shingle algae stains and roof warranties.
To remove roof algae a solution of oxygen bleach can be applied to the roof shingles and then rinsed off.
Roof lichen is a combination of both algae and fungus.
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.
To remove roof algae and moss you ll probably end up using a solution of household bleach.
Simple cover your plants just as painters do.
To remove and prevent black algae stains on roofs see black stain removal prevention.
If left untreated lichen can eventually take off the top layer of your shingle leaving a permanent scar on your roof.
Often mistaken as mold or mildew the black discoloration and streaks visible on many roofs across the united states and canada are actually algae.
A copper strip at the top of the roof can prevent future roof algae.
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.
A blue green algae known as gloeocapsa magma could be the reason you have the algae which is spread by airborne spores sometimes it can also be caused by an accumulation of mildew mold dirt or defective shingles.
When these two depend on each other they can grow living organisms.
Although some similarities exist algae and moss are very different and require slightly different procedures to prevent or to remove.
The ugly black red green or brown stains on your roof are likely algae or moss.
Fortunately there are ways to safely remove these organisms without further damaging your shingles.
How to remove algae from roof shingles pacific west roofing here in oregon mostly blue green algae grows on the outside of the house or on the roof shingles.
The roof algae is doesn t harm the shingles but looks bad.
Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.
Shingle roofs are prone to moss and algae growth which causes discoloration and damage.
How to safely remove algae moss from roof shingles.
Algae resistance provisions of asphalt roof shingle warranties are limited in coverage and scope.
Lichens will use roots to attach securely to your shingles making them difficult to remove.
Thousands of roof on homes and other buildings suffer from black streaks.
The most effective method of cleaning algae and moss from a roof is w ith a 50 50 mix of laundry strength liquid chlorine bleach and w ater.
How to remove roof algae and moss.