Black Marks On Wood Siding Shingles

Mold or dark algae on building exterior walls siding trim roofs.

Black marks on wood siding shingles.

Change the rags often. These spots are often caused by spiders especially true when you re near water. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. This algae growth usually begins as small spots and then eventually becomes visible streaks.

Next we applied the wood restorer i use wolman s deck and fence brightener. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. When that happens it is generally caused by mildew algae mold or dirt stains. These growths may appear on natural wood stained wood paitned wood vinyl or other plastics aluminum and many other materials even masonry or stone.

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. Because the whole thing will blend in about a year. You can t get it all but you can really improve the overall look and reduce the dark areas considerably. Both mold and algae can show up as dark or other colored stains on building ecterior surfaces.

Black spots on siding. 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. 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.

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. Mineral spirits and clean rags. It is not uncommon for roof shingles to turn black over time. If black mold is suspected it should be inspected by a mold inspector who is certified.

But do a test mark to see what it does to the vinylor clean all the marks and offer the owner a cash settlement. 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. Bet your boat will have spots too if you have one. You may have to clean all the siding because the clean parts will look different than the old vinyl acetone will work well also.