Guess what the problem isn t with the vinyl.
Black spots on marine vinyl.
Courtesy taco marine nothing mars mom s mink like mildew stains on the vinyl seats and cushions.
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If this lightens the stain try exposing the stained section to the sun as much as possible for several weeks.
The real problem is how the material is cared for and cleaned.
I think you can use simple green.
Are your seats hard vinyl seats attached to the boat.
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.
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.
The main characteristic that separates marine grade vinyl and regular vinyl is marine grade vinyl has uv protection and is mold mildew resistant.
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.
Quick drops in temperature.
Condensation that forms due to temperature swings can create a friendly environment for mold on your boat seats.
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.
In this video i use two helpful products to remove mold from vinyl boat seats.
If your boat is stored near lakes rivers and oceans this is often a given.
Clr mold and mildew and mr.
So how do you remove mildew from 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.
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.
Your boat tends to be outdoors longer in the warm weather leading to the promotion of mildew growth.