Thor Forums

[TurnerFam]

LOWES or HD has those white plastic-type 4x8 panels ...waterproof. The problem is that no matter whether that panel is waterproof, itself, if the EDGES are not sealed, water is still going to get into the wood structure.
THOR replaced all of our Main PASSTHRU flooring and the Water/Sewer bay passthru Flooring, under warranty, at the service center in Wakarusa. While I didn't have quite the 'damage' your pictures show, they certainly were showing signs of 'sagging', and the outside egdes, at the doors, were even growing some type of 'plant' or 'mushroom growth', etc. Crazy.

THOR looks like they try to use sealant in most corners, edges, etc., the way the motorhome kicks up water while driving, and since most of the doors don't do a perfect job of keeping out water, any small or tiny opening is going to eventually prove problematic.