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Old 08-23-2010, 02:01 PM   #1
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Insulation for Basement Ceiling under hardwood floors

Just getting to the point of insulating our interior basement walls and ceiling. WE have wood floors all throughout our upstairs and would like to add insulation into the basement ceiling as a way of cutting down some of the noise transfer between the two floors. What R-value would give me the most bang for my buck? Thanks!
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Old 08-24-2010, 11:57 PM   #2
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This idea of insulation being used for sound proofing was discussed at length here (or on the site). Do a search, as I don't think there was a hard answer. Obviously, it helps some, and the thicker the better, but there are apparently better options. I know that if I remove a 2'x4' tile (that structurally useless ceiling tile everyone uses) in my basement ceiling, the noise level goes up dramatically (ie, they deaden the sound from above pretty well). BTW: When I hung the wire to support the metal framing that holds the 2'x4' tiles, I put rubber between the wire and floor joist to minimize noise transfers. Personally, I don't think fiberglass insulation is dense enough to do stink, but maybe cellulose batts or mineral (rock) wool will help. Mineral wool CLAIMS to be better at noise deadening, but I know of no studies that prove that; never researched it. Try to find the previous discussion; sheet rock may be better than most insulation, if I recall.
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