[Ken524]

We have decided on a gabled roof over the oven. For roofing material I'm thinking about standard shingles to match the house or a metal roof (several neighbors have pole-barns with green or red metal roofs which would look nice)

How do I transition the Duratech pipe through the top of the gable roof and weatherproof it? Duratech sells flashing for angled roofs and flat roofs, but nothing for a chimney that goes through the top. I attached a picture to better explain my question.

Also: If I want to do a shingle roof, what material do I use for subroofing? I don't really want to use plywood due to the heat potential, and I'm not sure if I can nail shingles into Durock/Hardibacker. Any ideas?

Thanks!