Is black iron gas pipe code approved for exterior (outdoor) installation?
Monday, June 11, 2018
Limitations Of Black Iron Pipe
Florida’s high humidity and frequent rain is not kind to unprotected metal pipe like black iron. So the Residential Edition of the Florida Building Code and the International Residential Code do not allow gas pipe that is subject to corrosion to be installed at an exterior location where it is exposed to moisture, except if it is protected in an “approved” manner.Coating Must Be Approved
An approved manner does not mean a couple of coats of house paint. It requires a coating and application method approved by the local jurisdiction. So most professionals just don’t use black iron outdoors. The photos above and below, of black iron gas pipe installed only a few years ago and unprotected on the outside wall of a home, shows how rapidly the pipe can corrode.
Gas Appliance Connectors
The last part of connecting a gas appliance is the flexible tubing called an appliance connector. For installation standards, see our blog post What are the requirements for installing a gas appliance connector?
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