Join Date: Jul 2008
Location: Dickinson, Tx. / Somerville, TX
If you are convinced that the white stain is in the finish itself, care fully applied heat might just get rid of the white. Carefully applied heat will sometimes melt the finish, dry it and then harden back up again.
It is quite possible that the white areas are actually a mold or fungus caused by moisture UNDER the finish and actually on the wood itself. This mold/fungus is usually harmless to humans but it has somehow removed or bleached the color out of the wood. If this be the case, there is no cleaning agent that will replace the color of the wood.
I think the only way to find out for sure is to sand down below the original hard clear coat finish. Then touch-up with stain or touch-up powders. They also might have touch-up marker that get get a close color match.
Retired woodworker, amongst other things, Sold full time cruising boat and now full time cruising in RV. Currently in Somerville, Tx
Last edited by Tony B; 09-22-2019 at 08:06 AM.