Or canada there s a chance you ll see at least one roof stained with black or dark brown streaks.
Roof with stains.
Your stains are probably caused by the airborne spores of a blue green algae known as gloeocapsa magma which is often mistaken for mold or mildew.
Clean the stain with bleach.
In virtually any residential neighborhood in the u s.
Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them.
Roof stains are not only unappealing to look at they also compromise the waterproofing ability of your shingles.
The most common type is known as gloeocapsa magma also known as blue green algae.
Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.
How to clean roof stains wash your shingles where the sun doesn t shine.
Black streaks on the north and west facing and shaded.
When that happens it is generally caused by mildew algae mold or dirt stains.
It is not uncommon for roof shingles to turn black over time.
Now that you ve.
These substances can infiltrate the limestone mixture that attaches the shingle to the roof and end up harming its ability to repel water.
Black stains on asphalt roofing products such as asphalt shingles or roll roofing caused by extractive bleeding.
This algae growth usually begins as small spots and then eventually becomes visible streaks.
Do shingles on your north west or other shaded roofs have streaky moldy stains.
Here s how to clean the.
Conceal an unsightly water stain on the ceiling and put a stopper on the leak that caused it with these stain fighting tips.
Algae tree sap and leaves moss and many other materials get dropped or blown onto your roof.
Your first priority when dealing with a water stain should be to find the.
Catalog of types of stains on building roofs surfaces walls algae caused black or green stains on roof or other building surfaces some photos of black algae stains are at black.
Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.
Preserve the appearance of your roof by removing black stains promptly.
Identify and repair the root cause.
Removing dirt sap and other stains there are a lot of different substances that can build up on your roof.
Many homeowners mistake these stains for mold mildew moss or even tree sap.
While the recipe for cleaning a roof with bleach can vary the basic formula is.
Although these dark spots and ugly black streaks on your roof may look like dirt mildew soot or mold what they really are is algae.
Make your shingles last longer.
