Found this in another forum with a quick yahoo search:
I found these test results from the Canandians:
1) no insulation in floor joists: 43 STC
2) 65mm of fiberglass: 50 STC
3) 152mm of fiberglass: 52 STC
4) 200-270mm of fiberglass: 53 STC
5) 90mm of rock fiber: 51 STC
6) 210mm of rock fiber: 54 STC
7) 90mm of spray cellulose: 52 STC
Life's too short...so enjoy it!
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