Ive searched the forum and found a few references to the ICC metal roof flashing, My question is would this particular flashing be compatible with Dura Vent class A? Our metal roof is being installed however because it is a hidden fastener roofing the ridges are much taller than typical metal roofing so the roofer is a bit leery of using the typical silicon boot with the lead ring. Id rather not have that as well due to the orange color of the boot. Will the ICC flashing work with other brands of pipe? The pipe has all ready been purchased (duravent class A) so its too late to switch brands there.