This is mold and mildew on siding.
Black stuff on vinyl siding.
Are those spots alive.
Use these simple landscaping tips to prevent this from happening.
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.
For tough spots like paint drips tar and pencil and pen marks use a nonabrasive bathtub cleaner or nylon scrub pad.
But i had no idea how to hang things on vinyl siding without damaging it.
By the growth pattern we think this is almost certainly a dark colored algae.
A microscopy lab examination of a sample from this surface would be needed to know for sure.
I was super worried about committing to nail holes or breaking the wall until i found the perfect hooks for hanging decor on vinyl siding without nails or screws.
Shotgun fungus can shoot black spots on your house here s how to avoid the mess if you re seeing dark specks on your siding the culprit could be hiding in your mulch.
Our screened in porch has a wall of vinyl siding and i wanted to make it look nicer by adding some pretty decor.
The black stains on the vinyl siding shown at left may be a fungus or a black agae.
And of course the black spots show up better on white surfaces so they are noticed more easily.
In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding.
It happens on siding of all types including vinyl wood and fiber cement.
In nature the artillery fungus shoots its spores towards sunlight.
Black vinyl siding trim.
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.
Instead clean stains such as black scuff marks as soon as you notice them to prevent them from baking or settling into the siding.
But testing is probably not justified.
The siding is relatively low maintenance as you don t need to paint it every year like wood siding or repair mortar like brick construction.
Clean tough stains off with a nonabrasive cleaner or a homemade vinyl siding cleaner of soap and water that won t damage the surface of the vinyl.