I didn't see anything in the forum rules against resurrecting an old thread, but please forgive me if I've sinned as this is the only discussion I've found on a couple of points of interest...
Originally Posted by Ed the Roofer
As long as the shingles are installed correctly, the top smooth portion of the shingle can be adjusted to wind up being where the SV II needs to set on.
Unexposed caulk, ie; Caulk that is hidden from the UV of the sun and sandwiched in between two products does not weather like exposed caulking does.
How would one "adjust" the top portion - does this mean move the entire shingle down, so the lower row has less exposure? What would you do in a situation (like mine) where you aren't running the vent the entire length of the ridge? Seems like this might create an odd look, with the differing exposures - or is that not really noticeable with the architectural shingles?
How do you "hide" the sealant? Won't the sealant filling the gap between the vent & "base layer" of the shingle be exposed? Is tripolymer an appropriate sealant for this situation?
Thanks IA for your feedback & insight!