Fiberglass camper roof penetration sealant

[Rob and Dot]

I want to gain the benefit of other folks experience on re-sealing roof penetrations on a fibergas roof. What type of sealants offer the the best performance? I believe that Bigfoot used a product called Plasti kote or Plasti coat on the roof penetrations, but after 4 years it needs to be redone (showing some cracking).

Please give me the benefit of your experiences.

Rob

[Frederick L. Simson]

I have used "C-10" self leveling sealant, because it was advertised as being made specifically for fiberglass applications. It has held up OK for 3 years, but I have found with the recent extreme temperature swings, I need to reseal too.

[JOE DRISSEL]

I use clear Geocel.

[Isaac M]

I've had good luck with ProFlex RV.