How to get rid of algae on the roof.
Fungus growing on asphalt roof shingle.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside.
Black algae stains may be mistaken for but are not extractive bleeding a product cosmetic defect.
Moss growing on a roof may or may not be considered attractive or quaint but there is no doubt that extensive moss on a roof can seriously damage the roof by growing under and raising or loosening.
If the roof fungi haven t damaged the structural integrity of the roof you should be able to clean it yourself.
Bleach kills fungus on contact.
Moss aides in shortening the life span of your roof because it retains moisture and in cold climates can freeze causing damage to the shingle and granules.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Some black stains on asphalt roof shingles are caused by a black algae sometimes misnamed as a black fungus or even a mildew such as that shown in the photograph here.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
Mold on roof jan 30 2018 when it comes to the structural.
Mold stains can form on roof shingles that are in permanent shade.
Though often attributed to an accumulation of dirt defective shingles mold or mildew.
Some black stains on asphalt roof shingles are caused by a black algae sometimes misnamed as a black fungus or even a mildew such as that shown in the photograph here.
The 3m company has developed an additive for asphalt roofing shingles using copper granules.
This unique advance in shingle technology gives long term fungus protection for the entire roof.
Hose off and brush all moss loose from your roof shingles.
You can do this easily with a 1 1 ratio of bleach and water.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
Simply mix the bleach and water spread the mix over your roof with a mop and hose the roof off.
You can find more information on these special roofing shingles here.
If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Scrubbing or power washing the lichen will only do more damage.
When it rains a slight amount of zinc dissolves from the strips and coats the roof inhibiting algae and fungus growth.
Another organism growing on your roof is moss which is a plant not a fungus or algae.
Not to worry though because you can clean the mold off with basic household bleach and save your roof long before you need an expensive replacement.
