We have these small black spots that look like specks of tar all over our white vinyl siding of our house.
Black spots on siding.
The photo at above left shows green algae on vinyl siding.
Removing spots from vinyl siding.
Click to enlarge any image small gray or darker round spots on siding that are about 1 16 in individual diameter particularly if the spots are slightly raised may be artillery fungus a mold spore.
Vinyl siding is very popular due to its durability and simple maintenance.
It s hard to see shotgun fungus itself because it s only 2 millimeters wide.
Its adhesion properties are legendary and the spots can be.
The only way i have found to remove them thus far is by scraping the windows with a razor blade.
Some tell us it s from spiders.
Insect stains and other debris can be removed by simply cleaning vinyl siding with household cleaners.
What is artillery fungus.
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.
We have thousands of tiny black spots pin head size all over the siding of our house.
Dirt and insect secretion stains however can adhere to vinyl siding attracting molds mildews and algae.
Others have said it s a fungus from mulch.
Algae may also look black or brown as may some molds.
It is sphaerobolus a common fungus that sticks firmly to light or white colored surfaces and resembles spots of tar.
I have tried to remove these spots with mineral spirits without success.
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.
Those annoying black spots that creep up your siding or splash along the side of your car may not be mud spatters but artillery fungus.
It s on the porch my windows but it is worse on the siding.
Artillery fungus is a wood dwelling fungus commonly found in mulch.
I am getting small dark spots on windows and the white siding of my house.