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Discussion Starter · #1 ·
Quick question, given that it is installed correctly, is a 1/2 inch subfloor plus 1/2 inch plywood underlayment the equivalent of a single 1 inch subfloor as far as structural strength goes?
 

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Discussion Starter · #3 ·
Yes joints would be staggered and grains would run perpendicular. Going to be tiling bathroom and just want to make sure I got everything together thanks
 

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I would add some construction glue between the layers and nail every 6”-12” to truly connective 2 layers.


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