Your boat tends to be outdoors longer in the warm weather leading to the promotion of mildew growth.
Black spots on marine vinyl.
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.
Condensation that forms due to temperature swings can create a friendly environment for mold on your boat seats.
Try rubbing a small spot with this solution on a cloth or a small scrub brush.
How to clean mold mildew and black spots off vinyl boat seats.
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.
Courtesy taco marine nothing mars mom s mink like mildew stains on the vinyl seats and cushions.
If your boat is stored near lakes rivers and oceans this is often a given.
Those black dots and blobs look unsightly may cause the crew to stand instead of sit and cause your boat to diminish in value.
If this lightens the stain try exposing the stained section to the sun as much as possible for several weeks.
Quick drops in temperature.
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.
So how do you remove mildew from 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.
The real problem is how the material is cared for and cleaned.
We are not pointing fingers but this is usually the 1 reason marine vinyl breaks down.
I think you can use simple green.
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In this video i use two helpful products to remove mold from vinyl boat seats.