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Community and Q&A

Does the gas line into a fireplace need to be foamed?

B2YcRJeqAX | Posted in Energy Efficiency and Durability on

The gas line into the fireplace surround has a perforation to insert the line. Does the opening need fireproof foam added, since it is an interior wall?

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  1. GBA Editor
    Martin Holladay | | #1

    The penetration that matters is where the gas line penetrates your home's thermal envelope. That penetration needs to be sealed with caulk, spray foam, or a product like a Kaflex patch.

    Assuming that you have sealed that penetration well, and have paid attention to other air barrier details, you don't have to perform air sealing at the location you mention unless the fireplace manufacturer has requirements related to fire safety. Of course, it's important to follow all manufacturer's recommendations. When in doubt, contact the manufacturer.

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