can someone who understands advise pls. The foam goes at the bottom, right ?
Then the ridge cap covers the ridge and down 4" or so on the metal roofing. I have my ridge cut out now.
So… what if anything needs to be done to stop wind blown rain from blowin up the roof ?
Also if you block the bottom of the metal with the foam how does the roof breath between the asphat and the metal with no airflow under the metal ?
I am starting to think I should have just re-roofed with an Archtech shingle over my one layer of three tab.
I am trying to stop the pine needles from working under the tabs of the 3 tabs I figured the metal would allow the needles to blow off or wash off or just lay there and not bother anything.
If I use the 12" cap to make up for my short metal will this be ANY problem ?