srm
Well-Known Member
Some years ago I was looking at a design for a wood/epoxy trimaran. Fuel tank specification was for a plywood tank with five coats of west epoxy on the inside.
An epoxy coating probably will not bond securely to the inside of your cleaned and abraded GRP fuel tank as per the various comments above. However, you may consider laying up a thin glass fabric epoxy lining in your existing tanks. I am thinking that the abraded GRP surface will mechanically support the glass epoxy skin and the epoxy provide a suitable barrier for the diesel .
Only an idea as I have not had to do this in a tank. I did however add foam cored stringers with glass fabric and epoxy to stiffen the sides of a GRP hull and they showed no sign of delaminating when I sold the boat five years later.
An epoxy coating probably will not bond securely to the inside of your cleaned and abraded GRP fuel tank as per the various comments above. However, you may consider laying up a thin glass fabric epoxy lining in your existing tanks. I am thinking that the abraded GRP surface will mechanically support the glass epoxy skin and the epoxy provide a suitable barrier for the diesel .
Only an idea as I have not had to do this in a tank. I did however add foam cored stringers with glass fabric and epoxy to stiffen the sides of a GRP hull and they showed no sign of delaminating when I sold the boat five years later.