Chris Bryant wrote:
It all depends on the siding pattern- if the corrugations are too deep, I use 2 layers of butyl tape- I wind up wasting a lot, but it gives a good, water tight seal.
The main thing is to make sure you see some butyl squeeze out along the entire perimeter, then I trim with a plastic putty knife. The seal is the butyl, any caulk added is purely cosmetic, and not to actually seal the frame.
Be aware that the butyl will continue to squeeze out for a bit.
This is what I did when I rebuilt the front wall of our old Nomad.
