Redoing a Hybrid camper suggestions please!

[jodie]

New to the site and been reading alot of helpful post. I bought a 1999 fleetwood prowler hybrid. Unfortunately the seller wasent honost about the condition of the camper. He had let it air out so we didnt notice any smell but he did say the roof had leaked over the winter and they had to replace the roof. My wife and I bought the camper and brought it home. Three days later went to open the door to camper and the aweful smell of mold and mildew hit us immediately. I tossed it up to lesson learned. I started assessing the situation since I could no longer believe anything the seller had told us. I inspected the roof and it appears after reading they did apply a new rubber tarp type roof. Ive gutted the floor which was laminate, 1/8 deteriated wood of some sort, 1" styrofoam, the wood again, and moisture barrier. But everything was saturated with water. I think the roof had leaked and water ran down and became trapped in the black "moisture barrier" material and wasent able to dry.Because its been weeks since it has rained. So i began to I run water all over the roof and cant see any water entering the camper. I pulled all the previouslt wet paneling off the walls and it just flakes off until I reach the styrofoam. The one thing thats been on my mind is if I pull the styrofoam ceiling down from inside the trailer would that "normally" damage the roof above and cause leaks? Is the styorfoam inside the walls glued to the outskirt of the camper? With all the floor out I can see there not much metal there to support a 3/4 plywood floor like I had planned? If anyone has any suggestions they would be greatly appreciated as I start this journey.

[BigBaron]

Can you post some pics? I know of many roof rebuild threads on another forum, but I'm sure there a gazillions here, too. Probably in the pop-ups section.
This also sounds like a perfect case for "either you give me my money back or I sue you in small claims".
Give the trailer back to the original owner. They lied, and either intentionally or unintentionally defrauded you. If the seller won't budge, ask the local police to accompany you to the seller. Sometimes they will, and that is very effective.
If nothing is resolved, contact a legal service/atty. for advice.
What is the $$ amount? Small claims is usually for $5,000 or less.
I just hope you can get your money back...

[Superslif]

Yes, you now own a "lemon". The floor structure of 1/8" plywood / Styrofoam / 1/8" plywood is bonded together as the main base to build the rest of the trailer. The frame the trailer is built on is it a "I" beam or is it what is called a "Euro" type that is pressed steel with 3" holes along the side.

Yes, if you do rebuild the floor going to a 3/4" plywood is the way to go. Add a spacer so you make up the difference of the old bonded thickness of the old floor system. But your going to have to make sure you catch the load of the walls because the old floor system relied on the sandwich of 1/8' plywood / Styrofoam / 1/8" to support the walls.

My 2005 hybrid had the euro type frame and the same sandwich floor system. My newer 2013 hybrid has a "I" beam frame and the same sandwich floor system. But the 2013's floor is more of a solid feeling when walking on it.

Your outside walls are most likely the same sandwich thing plus a added inside decorative wall board. Here is a online link to a pdf file of the 2005 brochure of my Aerolite. On page 6 it shows a picture of the euro frame and page 7 a good diagram of the floor, wall and roof construction. You can see there is very little support that the euro frame offers. The main building blocks for that type of trailer is that "sandwich" floor.....otherwise that frame would twist to pieces. pdf 2005 Aerolite brochure

Is the styorfoam inside the walls glued to the outskirt of the camper?

Most likely

The one thing thats been on my mind is if I pull the styrofoam ceiling down from inside the trailer would that "normally" damage the roof above and cause leaks?

Here you might be OK to pull the Strofoam down because I believe the roof was not a sandwich system like the floor and walls are. You said it was a 99' trailer, so I believe they were building them that way then as like today. One good thing is that you said it seems the roof is not leaking....That's good...