Caulk suggestions for new boot type flashing on pole barn steel roof

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wacnstac

Member
Feb 6, 2012
33
Ohio
Really want to seal this sucker that is on the low side of the metal roof once and for all. I would prefer caulk that is green to match roof, but clear will do. The boot will be screwed down as well. Geocel 2300? Open for suggestions.
 
A storm collar is most likely the remedy here.
If you want to fix it once and for all, then this is the flashing that needs to be used. Those boots are always troublesome.
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I am going with the boot. Need suggestions on the best caulk to go underneath it.
Well in that case, it isn't intended to have caulking under it. A good band-aid would be silicone, clear Quad, or geocel. Most of the time the leak is coming down the pipe. If you add a storm collar above the boot and silicone around it you might find the answer to your re-occurring problem.
Another issue with the boot is that it offers no support to the pipe, so the wind rocks it a little and breaks the seal at the roof. It will always give you trouble.
 
I like the Geocel stuff, but there is so many kinds of Geocel, what is the best for sealing the boot to the pole barn steel roof? 2300? Boot is flexible and the pipe is supported with roof supports.
 
I have pulled a pipe where it was 7 yrs old, top of the chimney. Out in full sunlight. Stuff was still adhering strongly. It is fine. You don't want the kitchen and bath stuff. The window and door product is what to look for.

SUN-/FREEZE-PROOF
The outside of a home is exposed to harsh outdoor elements throughout the year. Extreme heat, the sun's UV rays, and freezing temperatures can cause acrylic caulk to lose its flexibility and degrade. GE Silicone II* Window & Door's permanent flexibility keeps it from breaking down so it can protect a home as it settles or as the seasons change and joints expand and contract.

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As to GE Silicone II and outdoor use, in 2005 when I installed my liners while I was up top putting on the top plates I noticed a few cracks in my chimney crown. So I shot the leftover Silicone II in the cracks. Last week when I was up there the stuff was good as new.
 
we use geocel 4500 it is black but it is the best stuff I have used yet
 
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