What Causes Streaks On Roof Shingles

When rain hits the strips it produces a solution that runs down the roof and keeps algae moss and fungus from growing.

What causes streaks on roof shingles.

After all asphalt shingles contain limestone which happens to be one of algae s major food sources. Video on how to clean softwash an asphalt shingle roof including where to find. While the dark streaks are unsightly experts tell our team that the greatest danger to the roof is from moisture retention or root damage that algae and other life forms can cause. While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely.

Algae if left untreated can also cause your shingles to deteriorate over time. Dark streaks or roof discoloration caused by algae happens in varying degrees across the u s especially in areas exposed to warm humid conditions. It can happen to homes that are otherwise maintained very well but why. This isn t unique to abandoned houses either.

The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores. Rather they are caused by a hardy algae known as. It is most widespread in the eastern united states and is commonly found on roofs with northern exposure. Black streaks on shingles aren t caused by leaking tar.

Algae grow and reproduce as they continue to feed on the limestone turning your roof shingles into loose husk over time. Every wonder what causes those ugly black streaks and stains on your roof. Also algae and fungus can grow together to form lichen the roots of which can wrap around and feed on the granules covering the shingles. The most common type is known as gloeocapsa magma also known as blue green algae.

Black streaking on roofs is a common problem. Causes of black streaking on roofs. 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. The streaks are caused by a type of algae known as gloeocapsa magma.

If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs. This algae growth usually begins as small spots and then eventually becomes visible streaks. Almost without fail every photo of an abandoned house would have black streaks on roof shingles. If the streaks don t bother you or you re not ready to invest in a new roof install zinc or copper strips available at roofing centers along the top course of shingles.