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One more Venting Question

Posted by bucksfan on April 19th, 2001 09:04 AM

Still on the suject of venting ny hot water heater straight up thru' the roof :
The code says there must be a 1" spacing between the vent pipe and "combustibles". As dumb as this question may sound, does that imply the wood flooring and roof that I must pass through? i.e. If I have a 3" diameter vent pipe, do I need 5" diameter holes through my ceiling and roof to attain that 1" clearance? Thanks.

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