Extreme Water Damage

The video I was mentioning was the one you talked about here:

"This is how FR has repaired soft floors under warranty. Pilotpodder has a nice video of what they did in his case.  The original floor got its rigidity from being a laminated "sandwich".  That is no longer possible in your case so you will likely need more supports than you think under your new floor to compensate for that."

Thanks offgrid.  It's definitely been an adventure.  I ended up tearing up most of the bottom plywood bc it was so loose.  This morning, when I opened it up, it was the first time the smell wasn't overwhelming, so that's a good sign!  

Do you have any experience caulking rpods?  The seams are so slight, putting the caulk bead on there will be a delicate job.

Do you have a link the to the video you mentioned?

Well, stage one complete.  I really didn't want to remove all the styrofoam, but after seeing how wet it was underneath in one section, I went ahead.  It was actually easy for most of it.  The lower plywood I left in place, except where it was coming up easilly.

What I found with mine, is that there are basically 6 sections if you look from underneath.  3 of those sections are not able to be seen from below bc of the clean, grey, and black tanks.  Then there are open  sections at the rear, in the middle,and in the front.  I'll be  putting some sort of support in those areas like you mentioned.  Not sure exactly what yet, but it makes sense what you're saying and how it's needed.  I found the foam at Lowes, and it's really inexpensive, but thickness isn't exactly the same.  The foam I took up measured  at 1 3/4", and Lowes only has 1/2, 3/4, and 2....so I'll have to go with the 2 or use several layers together to get it the same size. 

The front and rear were the most damaged by water--from the floor and one corner/side  ended up being pretty wet. I exposed the wall on those areas, and actually took off the back molding in the rear corner to let it dry further.

We're having a glorious week here in SC.  Cool temps, low humidity, and sunshine! I'll have to do some wood filler repair on the  exposed walls, as well put in new plywood on the inner back panel, and some sort of wall paper. That will be the easy part! 

The inside is now down to only a bit of framing around the hot water  tank and heater, and of course the fridge and bathroom areas.  Everything else is down to the waterproofing wrap!

I decided I need to recaulk those areas, and might as well do the whole thing it's really not that much more.

So next steps is scraping and resealing while the inside dries.  I'm definitely happy to be done with  the tear down, that part was not fun and felt like I just kept finding more and more wet areas.  Time to put it back together, and I'm actually excited now about the possibility of what the inside can look like now and being able to sleep in it again!

So, rpod  floor update!

After a week or more of drying, I ended up taking out most of the wood from the inside.  It turns out not only did I have a leak at the rear window, but also some of the openings (the outlet by right wheel well, the shore power outlet).  

So, I have scraped up the top layer of all the plywood.  Pulled off part of the wall to expose the wet areas and start drying it out.  The humidity tester tool was crucial here, as it showed me where things were still damp where I couldn't see, thank you again Dennis! 

The worse area was in the rear storage, under the seat  where the table is in the 172.  I took up the sub floor, down to the styrofoam, and part of lower plywood next to the water proofing.  I see there are 2 places where I will need to get someone to weld in a few riggers.  The back area, and the very front. 

My concern now, is waiting for it to finish drying (slow but surely, I'm using a few small DC fans, and charging the battery as needed), and what to do about the lower plywood (next to the water proofing).  It seems like the entire lower plywood is WET!

I saw another post of a guy who works on boats who took all his floor out.  I've DM'd him, but he hasn't gotten back to me.  I want to know if he took out his fridge, etc...I can see how I could take out all the styrofoam and wood except for below the appliances.  Replacing the lower wood, and cleaning or replacing the styrofoam would not be that hard, but if I don't expose the wood by the water proofing below the fridge and under the bathroom, I'm worried that little bit of moisture left there will end up making this all happen again. 

Thoughts? Anything encouragement or guidance is appreciated!