Existing 4″ concrete poured floor over basement living space. Was planning on putting down 6 mil rubber, then two layers of 1/2 advantech t&g. Hardwood floors on top of that. Want to decrease ipact sound transmission so the rooms in the basement down below. I know I should loose lay the rubber down.. Im just not familiar with expansion and contraction of plywood. Should I glue and screw the two layers together? Or should just Screw. I was also thinking of green glue between the two layers of advantech.
1. Does this seem like a good solution?
2. Should I glue and screw the two layers together?
3. Would green glue between the layers be a good option? Or maybe another layer of thin rubber?
Thank You for your consideration!
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