Ok, I have been looking for way too long here and I give up! I picked up the metal roofing and ridge cap for my coop/run yesterday. Today I was looking at the ridge cap/vent and noticed that there will need to be something to raise the cap up off the roof in order to clear the wavy roofing material. Does this cap have to use one of the plastic ridge vents under the metal cap? My only other thought is to use strips of wood to attach the cap to the roof. Any photos?? The cap is the one sold at Lowes and has a round rolled top peak on it.