Hi folks,
So, we're renovating (rebuilding, really) a really lousily built 1970s tract ranch home in the PNW. The floor is 4' O.C. beams supporting 1.5" car decking over which we laid 1/2" CDX ply. It's only 904 sq ft, so hardly massive.
The original intention was that we'd be laying 3/4" ply...