Slide Out Floor Replacement – Rot Repair (long w/pics)

myredracer wrote:

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Unless I missed it, where did the moisture come from? Below the floor, from above or from inside? It only took 7 years to get like that...
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Would like to know that too.

Condensation under the insulating foil? Those floors are exposed and get cold when the slide's out.

My slide is a similar style with the rug+foil, but they used marine plywood. Am tempted to poke a small finger hole in each corner and feel under the foil to see if there's any wetness.