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insulating a crawl space under a garage that was closed in

insulating a crawl space under a garage that was closed in


Old 02-22-19, 02:31 PM
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Join Date: Feb 2019
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insulating a crawl space under a garage that was closed in

We bought a repo that a garage that has been closed in, floor joists, sub floor, the whole deal. Everything is finished upstairs now, but the crawl space between the old garage concrete and floor joists isn't insulated. It's not a tall enough space for me to fit in and there's no vapor barrier down. Any ideas what to do to get insulation and vapor barrier in. I can really feel the temp difference on the floors above.
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Old 03-24-19, 08:29 AM
Join Date: Mar 2007
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Is this a large garage, or just an old one-car? You might be able to use a sprayer to get some of it near the edges. I'm thinking about the kind people use for insulating rim joists. Otherwise you'd have to tear up the subfloor to get at that space.
Any chance this room has a lot of windows, uninsulated attic, or poor insulation / thin walls? Sometimes the floor is cold because air is getting in elsewhere and sinking to floor level. (I'm not saying the space under the floor isn't cold, but heat doesn't transfer downward very efficiently. If the room has flooring and subfloor, I'd suspect and address problems higher up first.)
Of course, there's always the old-fashioned solution - rugs / carpet.
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