Resealing a Roof Vent

[Larry C Hanson]

ACE Butyl Rubber caulk works great!

Larry H

[ruscal]

I have a question about Dicor self leveling caulk. Why self leveling? I have used self leveling caulking material on construction projects in the past and found that self leveling is exactly that. It will flow to the low end of the joint and spill out of the intended location. You could never use it on a sloping or vertical joint. "Gun grade" on the other hand could be used in any position, and tooled for architectural appearance.
Russ

[Bob Miller]

I use Sikaflex 715 on Sticky roof vents and roof edges because it does flow out and gets into the usual gaps found on those seams. The non-self leveling just piles up on top and seems more prone to age-peeling

But I don't use it on windows or side walls, and never on FGRV's at all.