Leak: Above Rear Window 2015 27FB

[cwylde]

If you want to find a leak, visit the PNW...

After spending the past year in very dry climates, we have discovered a slow leak that appears above the middle rear window of our 2015 27FB during heavy rain. Water seems to be making its way between the interior and exterior skins, then appears along the upper edge of the screen. I'm pointing to the spot where the water appears, although there's no leaking in the photos.

I got up on the roof to inspect the seals and rivets. Everything looks good there. The only points of ingress that I see are 1) around the radio antenna, and 2) around the clearance lights.

Around the leading edge of the lights, there is a gap between the aluminum and what looks like a foam seal. I'm not sure what the actual roof penetration looks like, but I did put some silicone sealer (all I have on hand) around the most obvious gap you can see in the photo.

I'm still seeing the leak, but it seems like heavier and more sustained rainfall is required for the leak to start, so I'm wondering if sealing around the lights is the right direction.

Has anyone else had a leak that appears where I'm seeing ours? Should I seal around the entire base of the clearance lights, and also where the plastic housing meets the chrome trim? Any other ingress points I should inspect?

Thanks in advance!

[cwylde]

Bumping this in hopes that someone has had a similar experience and can offer some insight. Thanks!

[wilsodf]

When was the last time you had your roof re-sealed?

[cwylde]

The roof hasn't been sealed since new, although it spent two years of its life under cover.


Due to the location of the leak, it seems like only the rear end cap seal could be the culprit. (Anywhere else, I think the water would follow the curve of the roof/ceiling to either the left or right side of the camper.) That seal looks to be in good condition though. You can see it in the photo of the antenna.