Streaks On Roof Shingles

Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty.

Streaks on roof shingles.

These black streaks are. While the streaks do not cause a great deal of damage they can cause the shingle to age prematurely. Black streaks on shingled roofs are a common though mysterious sight. While not immediately damaging they can prematurely age shingles.

Dark streaks or roof discoloration caused by algae happens in varying degrees across the u s especially in areas exposed to warm humid conditions. We have had several calls about these ar shingles showing black and green streaks. If you want to spend less on your roof you need to think of it as an investment. When that happens it is generally caused by mildew algae mold or dirt stains.

As the blue green algae. The streaks are caused by a type of algae known as gloeocapsa magma. It is most widespread in the eastern united states and is commonly found on roofs with northern exposure. Here s what they are and what to do about them.

And the only way for you to maximize that investment is to spend money on it. The streaks look like mold but they re actually algae colonies that form in your shingles and feed on moisture and the limestone filler agents in the shingles. Though often attributed to an accumulation of dirt defective shingles mold or mildew. If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.

Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.

The most common type is known as gloeocapsa magma also known as blue green algae. Roof shingles aren t exactly cheap and considering the amount of work that goes into replacing a roof paying a high amount for manual labor is also to be expected. It is not uncommon for roof shingles to turn black over time. The algae feed off of the limestone within the roof shingles.