Your boat tends to be outdoors longer in the warm weather leading to the promotion of mildew growth.
Black spots on marine vinyl.
Quick drops in temperature.
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.
I think you can use simple green.
So how do you remove mildew from boat seats.
Are your seats hard vinyl seats attached to the boat.
Condensation that forms due to temperature swings can create a friendly environment for mold on your boat seats.
We are not pointing fingers but this is usually the 1 reason marine vinyl breaks down.
Clr mold and mildew and mr.
12 6 2018 cleaning vinyl boat seats there are few things more frustrating for a boat owner than mildew stains taking over your vinyl seats and comfy cushions.
The solution used by most professionals for tough spots on vinyl is a 50 50 solution of boat clean plus and boat scrub.
In this video i use two helpful products to remove mold from vinyl boat seats.
Those black dots and blobs look unsightly may cause the crew to stand instead of sit and cause your boat to diminish in value.
Not only are the black spots unattractive but they can keep you from enjoying your time on board and even diminish the overall value of your boat.
Guess what the problem isn t with the vinyl.
The real problem is how the material is cared for and cleaned.
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.
Courtesy taco marine nothing mars mom s mink like mildew stains on the vinyl seats and cushions.
The main characteristic that separates marine grade vinyl and regular vinyl is marine grade vinyl has uv protection and is mold mildew resistant.
If this lightens the stain try exposing the stained section to the sun as much as possible for several weeks.
A solution made of bleach should work but if you need it to be environmentally friendly for disposing the cleaning solution into the lake river etc.
Try rubbing a small spot with this solution on a cloth or a small scrub brush.