Can I use roof brace on direct vent gas chimney pipe?


Old 08-30-04, 12:44 PM
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Location: Twin Cities, Minnesota
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Can I use roof brace on direct vent gas chimney pipe?

I want to install a direct vent gas fireplace in my cabin. The cabin has a steep roof (15/12 pitch) and the installation manual says in that case that I have to have a minimum of 6 feet of chimney pipe above the roof line. Can I use a roof brace to hold the chimney up or would I have to build a chase around it? One place told me I could not use a roof brace because the chimney pipe is thin and would get all bent up. I thought I could reinforce the brace with about a foot of a stronger sheet metal. Help!

Oh, I live in Minnesota and we get lots of snow here (not sure if that matters or not). The through-the-wall rear venting method will not work for me because the roof overhang comes out too far and the style of cabin (modified A frame) does not allow for the required 18 inches of clearance to the eave.

Thanks for any advice you can give me.
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Old 08-31-04, 04:29 AM
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I would consult the manufacture and codes in your area. I would imagine you would need double wall "B-vent" pipe if it's going to come in contact with combustibles.
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