Black Marks On Wood Siding Shingles

Mineral spirits and clean rags.

Black marks on wood siding shingles.

Change the rags often. Both mold and algae can show up as dark or other colored stains on building ecterior surfaces. Black mold can create dark spots on the surface of siding but often mold growth is not limited to surface areas. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. It is not uncommon for roof shingles to turn black over time. You can t get it all but you can really improve the overall look and reduce the dark areas considerably.

Bet your boat will have spots too if you have one. Next we applied the wood restorer i use wolman s deck and fence brightener. The most common type is known as gloeocapsa magma also known as blue green algae. Cleaning restoring wood siding then we used wolman s deck brite to clean it to get rid of the dark stains left by the mold.

These spots are often caused by spiders especially true when you re near water. The algae feed on the limestone in shingles. When that happens it is generally caused by mildew algae mold or dirt stains. Mold or dark algae on building exterior walls siding trim roofs.

But now this black algae is termed a roof shingle algae because of the annoying discoloration on a asphalt shingle roof. Because the whole thing will blend in about a year. You may have to clean all the siding because the clean parts will look different than the old vinyl acetone will work well also. This algae growth usually begins as small spots and then eventually becomes visible streaks.

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. These growths may appear on natural wood stained wood paitned wood vinyl or other plastics aluminum and many other materials even masonry or stone. 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. If he is unable to detect mold inside your exterior wall but confirms that the dark spot is black mold the mold should be removed at once.