Streaks On Roof Shingles

While not immediately damaging they can prematurely age shingles.

Streaks on roof shingles.

If you want to spend less on your roof you need to think of it as an investment. It is not uncommon for roof shingles to turn black over time. This algae growth usually begins as small spots and then eventually becomes visible streaks. When that happens it is generally caused by mildew algae mold or dirt stains.

Though often attributed to an accumulation of dirt defective shingles mold or mildew. 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. The algae feed off of the limestone within the roof shingles. Shingle manufacturers are now making an algae resistant shingle they resist algae from growing but are not fool proof.

Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. The streaks are caused by a type of algae known as gloeocapsa magma. Black streaks on shingled roofs are a common though mysterious sight. The most common type is known as gloeocapsa magma also known as blue green algae.

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. Here s what they are and what to do about them. The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores.

Over time this algae accumulates developing a black outer coating which causes stains on roof shingles. These black streaks are. 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 is most widespread in the eastern united states and is commonly found on roofs with northern exposure.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. 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. As the blue green algae. We have had several calls about these ar shingles showing black and green streaks.