Fiberglass Roof and vent seam caulking

[purduepete2]

Does anyone know where I can get the white rubberized caulking GS uses on the seams of the fiberglass roofs and around the vents?
I'm installing Shurflo fans and would like to do it properly to prevent future roof leaks.

Pete
2007 BT Cruiser 5291B

[mfa]

Dicor sealant is highly recommended. It is sold at Camping World and probably other places. There are two kinds -- use the "self-leveling" kind on horizontal surfaces like RV roofs. Use the other kind for vertical surfaces so it won't run down before curing.

Folks say to NOT use a silicone sealant.

If you are looking to repair a leaking seal, Eternabond tape is excellent for that. You just lay it down over the old seal.

[Home Skillet]

The vent over the bed was leaking on our GS.
I used Eternabond and have not had any issues at all. I ended up redoing all the vents and seams. :D

[RayChez1]

I use Dicor self leveling caulking. I go up on the roof once a year and check where all the caulking is done. If I see any cracks forming I clean the area with paint thinner and a rag to get all the grim off. Then I apply the Dicor and it works great.