Waterproofing the 1/8" thick exposed plywood
On the inside wall area of the outside kitchen, pass though storage compartment and propane tank areas of my 5th Wheel, there is exposed plywood or paneling type material. The most concerning would be...
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I was going to recommend Flex Seal as well. I had some framing under the slide in our TT that was wrapped with Darco...water got in, couldn't get out, and the wood rotted. When I rebuilt the floor I sprayed the replacement lumber with Flex Seal and it's help up great for 7+ years.
