Thanks. The reason I'm going with all plywood is the way I had to cut it out. I don't think I will have good support with the foam. With plywood I can alternate my overlaps and have the strength I need. Anyway just picked up the plywood but won't start back until Monday. Looked at cork flooring and may go back with that. Nice patterns, nice features, but we'll decide later.
Really don't think not having foam in bathroom will be a problem for sound, that 8v92 will soak up any sound and vibrations!
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