Black Spots Vinyl Siding

By the growth pattern we think this is almost certainly a dark colored algae.

Black spots vinyl siding.

We have these small black spots that look like specks of tar all over our white vinyl siding of our house. Thankfully regular maintenance of your vinyl siding is fairly straightforward and simple. The black tar like spots that are all over your vinyl siding are more than likely a fungus called sphaerobolus stellatus better known as artillery or shotgun fungus. Thankfully i only have one area that has plants next to it so the bleach solution wouldn t hurt them but not sure about my deck stains.

Davis of penn state. You have the infamous artillery fungus. Because this organic material sticks to house siding and windows we are confronted with finding a means of removal because that what we do. A microscopy lab examination of a sample from this surface would be needed to know for sure.

It goes all the way up to my second story windows and is even under my soffit and on my gutters. The artillery fungus is a white rotting wood decay fungus that likes to live on moist landscape mulch. It seems to be an epidemic in some communities. If you re seeing dark specks on your siding the culprit could be hiding in your mulch.

Over time and through repeated changes in weather vinyl siding will attract and develop mold or. It s on the porch my windows but it is worse on the siding. What are these black spots on your house siding. But testing is probably not justified.

A pro services inc has competed with artillery fungus for several years. Although it s most often found on the east coast it can grow anywhere and especially thrives in areas that have cool damp springs or rainy fall weather conditions. The black stains on the vinyl siding shown at left may be a fungus or a black agae. Artilliery fungus spore masses on vinyl siding.

Small black spots on siding. Use these simple landscaping tips to prevent this from happening.