Over time and through repeated changes in weather vinyl siding will attract and develop mold or.
Black spots on vinyl siding.
You basically have to stay on top of it remove any tree branches that are up against it make sure your waterspouts or gutters aren t keeping it wet a lot and ask at the hardware if there is anything you can apply to slow down growth.
How to clean spots on vinyl siding general cleaning tips.
Use these simple landscaping tips to prevent this from happening.
The artillery fungus shoots its black sticky spore mass which can be windblown as high as the second story of a house.
By the growth pattern we think this is almost certainly a dark colored algae.
The fruiting body of this fungus orients itself toward bright surfaces such as light colored houses or parked automobiles.
They may be a problem.
It may look unsightly but it s not harmful.
These spots are often caused by spiders especially true when you re near water.
Bleach works but if the house is in a generally damp area and the siding is facing north the mold fungus will just come back.
Thankfully regular maintenance of your vinyl siding is fairly straightforward and simple.
But testing is probably not justified.
Bet your boat will have spots too if you have one.
Removing spots from vinyl siding.
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.
In nature the artillery fungus shoots its spores towards sunlight.
The black stains on the vinyl siding shown at left may be a fungus or a black agae.
Black spots on siding.
Are those spots alive.
A microscopy lab examination of a sample from this surface would be needed to know for sure.
And of course the black spots show up better on white surfaces so they are noticed more easily.
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.