the Walls are Crumbling!

Glad the document helps. I am subscribed. Holler if I can offer any additional help and best of luck. Hope its minor and easily resolved.

Jose

Well, lucky for me it has smooth fiberglass(filon?)skin and the window is not around anything complex (of course I haven't looked inside the wall yet). I should be able to take the window out and peel the rotten wood away from the inside (fingers crossed). It does look like rotten plywood when I peeled a little wallpaper away.
Jose, your rebuild documentation is a great help.

Your 95 is most likely made from filon glued to a lauan inner lining. That is a good thing.

Other have already said it. When the wood rots it crumbles out and looks horrid. What you have to do is remove all the outer trim metal strips carefully, so they don't bend. When all the strips are off, you can peel back the outer filon skin and assess the damage. Odds are you will be replacing a lot of material. Read my partial document to learn what I used to rebuild the cabover on my 1983 and determine if you want to take on the rebuild task.

Cabover rebuild thread

Jose

Thanks everyone. Like Path1, I think the window weep holes and or window caulking tape is worn out and leaking because whenever there was condensation the window in question was always wet inside.

But I was under the assumption that the wall panels were made of compressed foam and not wood.

Man, I am going to have to get busy.

You are facing the same thing many of us have faced.
That is water damage.

It only takes a very small roof leak of other leak
to cause the wood to rot and cause the delaminating from the
siding. Remember water run down and also follow braces, etc.

The interior walls will have to be opened up to see
how much damage you have and possibly help trace the leak.

What you are faced with is using basic woodworking skills
to replace what is damaged.

If the delaminating if excessive, there may be a need to replace the
siding. Do a search and you will find where some have had success
with injecting thin epoxies.

You have to find the leak first.

Good luck.
Having an RV gives you a whole new full-time hobby.

Termites?

You have a leak that is not necesarilly on the window area, take a small hammer and lightlly tap on a wall that is not affected to learn the sound, then tap lightly arround the area that is going bad and you will hear how far the problem area extends.

Wet soaked wood or compressed wood sounds dull instead of resonating with a high tone as in dry wood.

Also check arround the air conditioner and all the vents, also on the corners where the front and or rear cap meets the rubber membrane, a leak can be further away than where the damage is located, if the unit has any tilt, even slight the water or moisture will travel to the lowest point until it meets a barrier like a window frame.

That needs a repair and to locate the sourse of the water entry, do not foget to check the marker lights they are also a source of water entry with time the plastic covers crack and allow water to penetrate.

Hope it helps a little and good luck

navegator

There is no evidence of water damage.

I'd say 90% of delamination is from water.
From what you describe... window weep holes and or window caulking tape is worn out and leaking.