Hey Jeff!
We have the Roof Vent Installation Kit # 344270KITW which comes with 2 tubes of sealant, a roll of butyl tape, and screws to complete the installation. If you're just needing the tubes of sealant then you can find that as part # 34427034145-1.
I'm attaching a video where we use this installation kit for a roof vent so you can see our method for applying it. view full answer...
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