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Can spray foam help?

FellStreeter | Posted in General Questions on

My home originally had an open front porch which, at one point, was enclosed. I recently had the enclosure torn off and reconstructed so that the area would serve as an addition to the home’s front room. The new “addition” sits atop a “coal bin.” Would spray foam help insulate the front room from any moisture and drafts from the coal bin?

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  1. GBA Editor
    Martin Holladay | | #1

    Kevin,
    I'm assuming that the "coal bin" you are referring to is below grade and connected to your basement. Presumably, the coal bin has concrete walls or masonry walls, just like a basement or crawl space.

    Of course, if you have a heated (conditioned) room above an unconditioned coal bin, you want three barriers between your finish flooring and the room below. You want an insulation layer; you want a vapor barrier; and you want an air barrier. Spray foam insulation is one option, but there are other ways to provide these barriers.

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