Should I use plywood or T&G OSB for subfloor in new addition I am
building? The addition is on second story, floors are 2 X 8 16 O.C. I
checked prices and 3/4" T&G OSB is more than twice cheaper then 3/4"
plywood. I will have hydronic heated floors. There will be another
plywood or OSB subfloor on top of base one with grooves for PEX
tubing. My original idea was to use OSB everywhere except for bath
subfloor where I was going to use plywood.