I ve found the following over the counter product works with elbow grease to remove the spots.
Little black spots on vinyl siding.
I am getting small dark spots on windows and the white siding of my house.
We have these small black spots that look like specks of tar all over our white vinyl siding of our house.
It goes all the way up to my second story windows and is even under my soffit and on my gutters.
It s hard to see shotgun fungus itself because it s only 2 millimeters wide.
Dirt from rain splash up algae lichens mold moss or even smoke or chemical stains have different causes and different preventative measures.
Artilliery fungus spore masses on vinyl siding.
Some tell us it s from spiders.
The spots are about the size of the head of a pin and appear to be black or dark brown in color.
Also known as artillery or cannonball fungus sphaerobolus it uses internal water pressure to forcefully fire its spores similar to seeds up to 20 feet away the fungus sets its sights on bright areas so that means it will aim for any pale surface that reflects light such as the siding on your house.
A first use a scraper or wire brush and scrape over a section of affected vinyl siding.
A side of my house in new york is covered in the dots.
We have thousands of tiny black spots pin head size all over the siding of our house.
This article discusses common causes of stains or discoloration found on vinyl building siding.
Others have said it s a fungus from mulch.
By sandy feather penn state extension.
A pro services inc has competed with artillery fungus for several years.
If you notice lots of tiny black or dark brown spots developing on your siding above a landscaped area of your yard as seen below it is most likely artillery otherwise known as shotgun fungus.
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 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.
It seems to be an epidemic in some communities.
Artillery fungus black tar spots on houses artillery fungus seeing black tar spots on the sides of your house or vehicles.
It s on the porch my windows but it is worse on the siding.
Distinguishing the type of stain found on siding is useful in deciding on the cause and thus the cure or prevention of staining.
Artillery fungus is a wood dwelling fungus commonly found in mulch.