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Venting a pellet stove thru a metal roof. Double walled 3" pipe is used and must maintain a 3" clearence from all combustibles. This means on a regular wooden roof there must be a 9" hole cut to allow 3"'s around the entire pipe. When going through a metal roof can you just cut a 4" hole as long as there are no rafters within 3" ?
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https://www.metalroofing.com/spirit/comment/7145/find/
I am assuming you are referring to a metal roof that is not installed on top of solid decking. In that case, I would say "yes" to answer your question BUT I would contact the roofing manufacturer direct to make sure they agree.
11/29/2005
Or copy this URL: https://www.metalroofing.com/spirit/comment/7145/find/Isaiah Industries, Inc.
11/30/2005
Or copy this URL: https://www.metalroofing.com/spirit/comment/7146/find/