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Old 11-08-2013, 08:27 AM   #1
Winnebago Owners Club
Vintage RV Owners Club
Join Date: Jul 2012
Posts: 68
update on floor in '93 winnebago

Ended up with a soft floor in many spots of a 22' '93 Warrior. Evidently one of the previous owners left it parked unused for a couple of years outside and the air conditioner seal leaked at least it did when I got the unit.

This is just an update in case anyone could benefit from the description. Winnebago produced some models during this vintage with only an aluminum lower skin of tin can thickness and a 5/8" OSB as a base for the vinyl and carpet.

Pulled up the vinyl and water had gotten under it and it appears that it kind of wicked out the binders in the OSB Board. All the OS is there but not held together with anything. I have yet to find a bad spot wherever there was carpet.

So there are 2 things that are apparent :
The OSB was not primer to seal it.
The carpet allowed enough moisture to the interior that the board was able to tolerate it. Where the 2 floor coverings came together it is as someone drew a line- rot on one side and dirty but healthy OSB on the other.

Pulling everything up to replace the OSB is out of my league and cost prohibited for such a rig anyway. So I have come up with the following plan and I will let you know how it works out.

1. Remove all vinyl and assoc. stuff
2. Use some low viscosity "rot consolidation" 2 part epoxy on all the soft spots after drilling a series of 3/16" holes to allow the material to stich in.
It is claim to be as strong or stronger than the base material was.
3. After the epoxy has dried(I don't know how many coats) I plan on using a flowable floor leveling compound as the floor had compressed wherever the binders had gone from the OSB.

2 interesting footnotes. On this rig the water tank is inside the living space. Water had seeped under the tank and rotten that OSB. I assumed that the tank was the source of the water after seeing this but after taking it out and testing it for a couple of days it does not leak. It was just another case of the floor not being sealed and the water not being able to escape.

The second note is that the Winnebago answer people had to be convinced that they had manufactured a unit with this floor arraignment. Every bit of information that they were able to provide referred to their higher end models with the multi-layer floor underlayment. So no real help there.
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