How to "raise" LR's sunken floor to be same as rest of house?
by
Meemoo
LR is 6 " lower than the rest of house. Want house all 1 level without hiring a contractor to do it. How far apart to place boards for support under subfloor? Thx, Cheryl 
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Usually building codes specify 16" apart, center to center. You might check with your local building department to insure you are complying with city code. That sounds great that you are going to have just one level of flooring. Guess your ceiling height there is not an issue?
Is your ceiling higher than 8 feet in that sunken living room? Floor joists should be 16 inches apart on center.
16" on center is correct. I've raised many floors in homes with sunken floors built in the 50's and 60's. A fad of the time. Also have raised porch floors level with the rest of homes converted to living quarters. Mainly bedrooms. Also added fiberglass insulation for extra measure.