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Best Sealing? and DRY ROT- w/photos

Homestead_or_Bu
Explorer
Explorer
Hey Everybody,
Boy, this gal could use your help. My new to me 1998 Coachmen C class has some significant water damage. I've got the roof sealed off really well, and thats looking good, but now the rest of the exterior needs attention, and there rare some problem areas. SO Im looking for best sealant recommendations, in general over all exterior, and specifically.

One ISSUE is that there is significant damage on the lower part of the panels that sit just behind the drivers door, and passenger door, meaning both sides, the drivers side being worst.( generator sits aft of it) The area below the molding (about1 foot) has the strength of cardboard, rather than wood that it once was. You can see what happens when I push on the panel in pics. The adjacent walls on the side of the vehicle shows no sign of dry rot. Only the front.
On these dry rot areas, the bottom metal trim is barely hanging on because with the rot, there isn't much to hang on to. I'm not sure if I should use a Sikaflex or Proflex ( sealant/adhesive) to hold it together and prevent further water entry. Or will doing so , just cause the area to get more brittle by binding it?
I wonder if i can shoot some epoxy or whatever in there to shore it up, because I can't see myself cutting it out and replacing it unless I had close guidance. And i know it would be cost prohibitive for a dealer to do it. Any ideas there?

Really want to take care of it, but not sure what my approach should be.

Next- can anybody tell me, by looking at pic, what kind of caulking was used on other near area seals? If its silicone, I heard that silicone is really hard to use anything over it, because not much adheres to it. I started to pull it off and thinking I could reseal with something like Sikaflex or PRoflex- using such over the whole exterior walls and seams...
Also I wonder what I should clean it up with - soap and water, mineral spirits...? Id rather use something non toxic, but that will prepare the surface well so I can get good seals.

Okay, Im hoping some of you experienced folks can lend a hand. I sure would appreciate it right about now.

here's dropbox photo link-
https://www.dropbox.com/sc/cv8boe8hu9k40pf/AAAHn1Ydrpu8Ne95Q9tG8Vwja

4 REPLIES 4

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Homestead_or_Bu
Explorer
Explorer
There is no slide. Thats just the front part of the coach, next to the vehicle entry.

I have felt up underneath, pushed on sides etc. At least right now, and the rot is bad, but only goes up about 1 foot.

CA_Traveler
Explorer III
Explorer III
Also I'm wondering just how extensive is the damage? Maybe you're only see part of the problem?
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob

CA_Traveler
Explorer III
Explorer III
Is the slide floor also damaged?

It looks like a complete repair is going to be involved. You've sealed the roof but the slide leak may be from the slide roof or sides of the slide?

There are products like Git Rot that can help but you need access to the wood and may not be a viable alternative for your problem.

Replacing the wood is of course the best fix and might involve removing the slide.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob