Author Topic: STC rating of wood+airgap+glass  (Read 2337 times)

TVC15

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STC rating of wood+airgap+glass
« on: September 07, 2010, 07:09:12 AM »
Will 3/4" plywood (28 STC) + 4" air gap + 1/4" glass (26 STC) get me close to 40 STC?  Finished size will be 4' x 7'