What would you seal this with?

[jonkquil]

The bituem (I think that's what it is) has dried and flaked off where it was squeezed out of the seam. I feel like I need to seal the whole length of the seam.

I'm thinking either RV sealant or Dicor, what would you guys use?

See pic.

 

[kitphantom]

Usually what's under trim, lights, vents, etc. is buytl tape. For caulking, an RV caulk is what we use (after using silicone a long time ago, before the days of the Portal, and paying the price of trying to re-caulk again later on). Dicor is one brand, we usedanother RV brand from our dealer last year or the year before, when they were out of Dicor. Self-leveling for horizontal surfaces, non-self leveling for vertical or sloped areas.

 

[Dave2514g]

This product in the pic is what the factory will have put around your 4 corner end caps of the roof. The side rails would have a water proof tape product under them (butyl tape). To fix it to factory specs you'd have to pull it all apart and replace the tape, then reseal the corners. I wouldn't open that can of worms, just use the same product as the corner caps

 

[johneliot]

Eternabond tape is great. You could buy it a couple of inches wide and fold it over the top. A little more difficult to remove if you ever had to but it will seal it wonderfully.

 

[xxxapache]

I would put Eternabond on it with Dicor on the edges of the Eternabond.

 

[vagov]

Dicor makes seal tite corner seal tape. Wraps around corner bead under trim