Bet your boat will have spots too if you have one.
Vinyl siding with dark spots.
By the growth pattern we think this is almost certainly a dark colored algae.
They believe a ballston spa based contractor is to blame.
A microscopy lab examination of a sample from this surface would be needed to know for sure.
Black spots on siding.
Never use chlorine bleach to remove insect stains as it will seep into the ground and kill the roots of any vegetation in the area.
For tough spots like paint drips tar and pencil and pen marks use a nonabrasive bathtub cleaner or nylon scrub pad.
Over time and through repeated changes in weather vinyl siding will attract and develop mold or.
Use these simple landscaping tips to prevent this from happening.
This in turn allows moisture to infiltrate.
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.
But testing is probably not justified.
Removing spots from vinyl siding.
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.
When the vinyl gets cold enough any impact against it will cause it to fracture or crack.
These spots are often caused by spiders especially true when you re near water.
Thankfully regular maintenance of your vinyl siding is fairly straightforward and simple.
Remove insect stains from vinyl siding with simple cleaners.
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.
How to clean spots on vinyl siding general cleaning tips.
Vinyl siding has other issues in cold climates as well.
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.
The black stains on the vinyl siding shown at left may be a fungus or a black agae.
Photo submitted by eugene dallas wilton.