Thread: Subfloor plywood thickness 20 years ago vs today
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Old 03-08-2008, 09:52 PM
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dimension lumber has gotten thinner and more expensive. in the 1960's 3/4 plywood was 3/4 plywood. rough cut 2X4s were actual 2X4. millgrade lumber is 1 1/2 X 3 1/2 - for a 2X4. underlayment or sheathing is now 5/8s instead of 3/4.
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