Leaking around skylight/vent/fan

As long as you are messing with it you may as well put in a good Maxxair or Fantastic Vent fan.

Otherwise yes get some Dicor.

Any loose, pealing back caulk will need to be removed gently with a scraper.

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26768193/srt/pa/pging/1/page/1.cfm

Robmoo wrote:
I'd go with Eternibond. The self leveling sealant will crack in 5 years or so and you will be back in the same situation. The Eternibond will last longer.

??? 5 years...SWEET

it is not like we have to climb upon a roof to see it. Dicor is cheaper and easier. I actually used the non sag type on my vent and it looks perfect. Nice and neat

I'd go with Eternibond. The self leveling sealant will crack in 5 years or so and you will be back in the same situation. The Eternibond will last longer.

It must be noted that nothing will seal a leak if you neglect to CLEAN the place you put "stuff" to do the sealing. No matter what you use, it must be on a clean surface, or it too will leak. Scrape off any loose crud, wash with soap and water, rinse the heck out of it, and wipe down with 90% rubbing alcohol, then be sure it is bone dry before you put that "stuff" on. At which point, whatever you use should work like a charm.

My theory is that anybody who's tried to stop such leaks and failed, simply didn't have a clean surface to start with.

Agree... Dicor self leveling caulk.

you can go to rv dealer and get a tube of dicor self leveling type use caulking gun to aply