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Old 02-04-13, 02:33 PM   #11
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I would think that the radiant barrier would have to go above the fiberglass, no? Basically, from the top down would be the subfloor, then a small air gap, radiant barrier, then insulation - otherwise, radiation from the subfloor would only be absorbed by the floor joists and insulation, so a radiant barrier underneath the fibgerlass wouldn't do much, right?

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Old 02-04-13, 08:33 PM   #12
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You are correct in how you would set it up. And if you could use Roxul instead of fibreglas, it would be even more "eco"

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