Black Spots On Shingle Roof

The black roof stains are caused by a form of algae that has been around for years typically found in the woods on the north side of trees or on exposed rocks.

Black spots on shingle roof.

This algae growth usually begins as small spots and then eventually becomes visible streaks. The most common class of roof algae is gloeocapsa magma a bacterium that eats water and expels oxygen. The algae will worsen and become more noticeable each year trapping moisture and causing. The size of your shed.

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 most common type is known as gloeocapsa magma also known as blue green algae. But now this black algae is termed a roof shingle algae because of the annoying discoloration on a asphalt shingle roof. These black streaks are unsightly and can diminish the appearance of the entire exterior of the home.

But there are other roof stain colors and causes. While copper is more toxic to algae galvanized sheet metal is much less expensive. The black stains are buildups of algae that can prevent the sun from burning off the bacteria. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.

It causes the black stains you may see on your roof. Black spots on roof shingles the new shingles shingles need to defend your asphalt shingles age they be damaged area needs to be rebalanced a proper protocol that eliminate excess toxins is the mainstay of the roof rafters. I ve got a problem. To keep algae from coming back once your roof is clean install a strip of copper or zinc coated sheet metal along each side of the roof just below the ridge.

It is not uncommon for roof shingles to turn black over time. The algae feed on the limestone in shingles. If you have nasty black stains on your asphalt shingle roof don t worry. To be effective 2 4 of metal should be visible on the roof.

Remove black stains from roof shingles to preserve the appearance of your home s roof. When that happens it is generally caused by mildew algae mold or dirt stains. Within the past 6 months several areas of the roof have developed a dark mildew like stain. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.

It was the same color as my old roof a light tan. Roof lichen is a combination of both algae and fungus. Three years ago i had a new fiberglass asphalt shingle roof installed.