Is the membrane on the bottom of the slide supposed to be water tight?
We just purchased a 2004 cedar creek 30CKTS fifth wheel. There is some rotten wood on both ends of the living room slide. I don't see anywhere that it has been leaking. The roof looks good and all of the seams. There is no damage in the cabinets or the walls. When starting to remove the rotten wood, I noticed that the membrane on the bottom has small pin holes. You can see daylight through it. I am wondering if the moisture can be drawn up through the membrane and rot the wood. I want to waterproof it, but I am wondering if it is meant to breath. If I water proof it and moisture gets in from elsewhere, it can hold it in. Any knowledge or opinions?
Also, has anyone replaced the wood flooring? It looks like about 2 inches of cdx type flooring, but has no seams on the 12' slide. It also looks like it sits from the outside frame to the inside frame with no cross supports. I feel like I can just cut out the bad wood and replace with an equal thickness of pressure treated plywood. We are putting a self stick vinyl adhesive tile down on top. There was an aluminum foil covering the wood, but it was mostly shredded. Glad I decided to tear that carpet out. The bedroom slide seems to be constructed differently. There does appear to be cross joists there and it is soft from underneath outside. I don't know if there is rot there, or just a different method of construction. I won't get to the bedroom anytime soon to work on it. Any comments or suggestions are appreciated.