leak

@KAK, we noticed the same staining after our first winter. We watched and couldn't see where it came from. Our t@b was less than a year old. We were baffled as to where the leak originated. When we attended the ÜCamp  event that summer, employees doing the minor repairs we had scheduled took a look and diagnosed it as a poor caulking job in the rear taillights, as you suspected. They explained that in a heavy downpour, water will often run off, but in a drizzle, or during a slow snow melt, the water seeps, not pours, behind the taillights, and if the caulking job is not perfect, find a it's way into the trailer. It is any easy 10 minute fix. Unscrew the taillight trim and lift off. Remove any old caulk and recaulk the screw holes and the wire pass through. Screw the taillight trim back into place. The stained piece of luan is merely cosmetic, so we opted not to replace it. You have no wood in the floor or rear wall to get damaged, so the quick taillight recaulk should suffice. Here's what our rear panel (behind and under the sofa) looks like.

Door side rear.
Drivers side rear.

dragonsdofly said:

@KAK, we noticed the same staining after our first winter. We watched and couldn't see where it came from. Our t@b was less than a year old. We were baffled as to where the leak originated. When we attended the ÜCamp  event that summer, employees doing the minor repairs we had scheduled took a look and diagnosed it as a poor caulking job in the rear taillights, as you suspected. They explained that in a heavy downpour, water will often run off, but in a drizzle, or during a slow snow melt, the water seeps, not pours, behind the taillights, and if the caulking job is not perfect, find a it's way into the trailer. It is any easy 10 minute fix. Unscrew the taillight trim and lift off. Remove any old caulk and recaulk the screw holes and the wire pass through. Screw the taillight trim back into place. The stained piece of luan is merely cosmetic, so we opted not to replace it. You have no wood in the floor or rear wall to get damaged, so the quick taillight recaulk should suffice. Here's what our rear panel (behind and under the sofa) looks like.

Door side rear.
Drivers side rear.

As I am preparing to head out on our first trip, I have spotted this exact symptom, to a lesser degree, but the same none the less. In resealing the tail light(s) did it resolve your issue? TIA.

@dragonsdofly good to hear.  I did this yesterday.  When I removed the tail light assembly, I found that the hole in the lamp cup, where the wires come though was devoid of any usefull caulk. They applied it, but missed the hole! Lol. I hope my repair hits the mark!

@PNWtabber, nüCamp used a pure silicone sealant on my taillights repair/recaulk. Although some people feel that the pure silicone is not an adequate sealant in exposed situations on an rv, it was used inside of the taillight trim, the wire holes through the body and in the screw holes securing the taillight trim to the body. My repair/reseal was done in July 2017 as stated previously and we are still leak free.

@PNWtabber, nuCamp uses "Geocell 2300 MHRV" sealant.  You can also use "Geocel ProFlex RV Sealant."  Silicone does not adhere well to aluminum or fiberglass, so a polyurethante sealant (like the Geocell sealants) is a better way to go.  You should be able to get them from Amazon or an RV shop.  (You can Google these products to learn more about them.)  

Yes, they identified the leak as being from the passenger side rear tail light.  They stated when the went to remove the tail light, they found two cracks in the sealant around the light.  This was a "known" issue they were aware of and therefore, they stated they would cover all the materials and labor to fix all of the damage.  Even with my T@B being a 2016 model, they fixed the leak in the light (resealed) and then corrected the interior damage without any cost as I listed in my above post.

AirBoss said:

duckblind123 said:

Yes, they identified the leak as being from the passenger side rear tail light.  They stated when the went to remove the tail light, they found two cracks in the sealant around the light.  This was a "known" issue they were aware of and therefore, they stated they would cover all the materials and labor to fix all of the damage.  Even with my T@B being a 2016 model, they fixed the leak in the light (resealed) and then corrected the interior damage without any cost as I listed in my above post.

When folks ask (let alone complain) about nuCamp customer service...this....this...is what I point to. In my experience, getting an RV manufacturer to respond even under warranty service can be a royal pain. Highly unlikely you'd get Keystone to step up and cover this under similar circumstance. 

Botton line: I'd put nuCamp customer service up against almost any other RV manufacturer. Period. 

I agree 100%.  Once we discovered the level of damage on the interior, we got very nervous on the cost to fix.  But NuCamp stood behind their product and took care of it.  Yes, I highly doubt another manufacturer would have done the same.  We are extremely happy with out T@B and know that we have a manufacturer that will work to make it right.

@duckblind123, you had more damage than those of us with 2017 models and newer as the 2016 models still had wood in the floor. Sorry you had to sustain that amount of damage, but so glad you are a member of the nüCamp family and everything was made good in the end.