I have a 24' pontoon with a bilt in gas tank and vent that allows the overflow, gas and OIL (2 cycle), to run on carpet. The carpet at the back corner (and under tank) is soaked with an oily, gummy residue. You can't touch it, IT IS A MESS. I tried Dawn dish washing liquid. I doused it and scrubbed it with a scrub brush and hosed it so the soap would get under the tank and back area. It is still a mess. How do I get this clean? Also the other back corner grows moss on it. It grows in the little valleys of the carpet. How do I get rid of the moss and stop it from coming back? I live in northern Ohio and boat approx 5 months a year and the boat is stored outside, on trailer with play area cover. I cannot take loose the corner and other parts to clean under them. Thanks, Harry
As to the oil, try a dry cleaner....but the carpet's probably done.
As to the moss--remove the carpet from under the cover while in storage. Moss/mildew needs moisture and lack of air circulation to grow. A covered boat provides the perfect environment.
In many ways, our fathers and grandfathers were smarter--or maybe tougher: few of them had carpet aboard their boats.
Yup I think its done ,you will have to bite a bullett and replace it, the oily/gummy area around the tank is the gasoline disolving the carpet backing/carpet, and as far as the mold mildew once it gets growing its hard to stop, check for a drainage blockage in that area,leaves and dirt can plug small holes really quickly, and you have to make sure it drains when you put the new carpet in or you will keep having the same problem,also check the wood platform for holding water, good luck.