Wet Subfloor in 2016 TAB CS Camper

Boatlife

I recently purchased a 2016 TAB CS camper that was lightly used and appeared to be in good shape. There was some noticeable water damage to the laminate flooring, but after tearing it up, I discovered that the entire 1/4" plywood subfloor has been completely saturated with water and basically disintigrates when pulled up. The flooring has since been completely removed and thankfully the decking over the trailer frame appears to be solid still, but I now have to figure out how the water got in to begin with. There are no obvious areas where water has stained the wall or where the calking or weather seals are in bad shape. The freshwater system does not leak. We had some rain last week, but did not see any water pooled anywhere (was prior to riping up the floor). I want to make sure the camper is weathertight before replacing the flooring.

I was wondering if anyone else has dealt with this happening on similar TAB models with the back kitchen and what needs to be done to resolve the issue. I can take some additional pictures if necessary.

Sharon_is_SAM

I would start with resealing the wheel wells.

https://tab-rv.vanillacommunity.com/discussion/6393/maintenance-notices

Boatlife

Got a good bit of rain this morning, seems to be water coming in from the side walls on both sides. 

Sharon_is_SAM

@Boatlife - while parked or towing?

Boatlife

Just got the camper 2 weeks ago. It has been parked in my driveway. It sat outside in a parking lot at the location where I bought it for about 3 months. Supposedly the camper was garage/carport kept by the previous owner. 

Water seems to be coming down the walls on either side and getting distributed along the aluminum square tube at the base of each wall which makes it difficult to pinpoint exactly where the problem areas are.  I may just have to re-calk all exterior seams but if there are particular problem areas I can home in on, that would help.

Sharon_is_SAM

The aluminum square tube is the Keder rail.  We tighten up the screws regularly.  You may want to send an email to nuCamp and ask their advice.  Maybe there used to be sealant under the rail?  Help@nucamprv.com.