the subfloors need to be thicker. For joist spacing of more than 16 inches up to 19.2 inches on center, the minimum thickness for both plywood and OSB is 3/4 inch. For joists spaced more than 19.2 inches on center, the minimum thickness for plywood is 7/8 inch and for OSB, 1 inch.
Hereof, how much does it cost to replace a floor?
Laminate flooring costs about $2,772.00 for a typical project of around 500 square feet, or around $5.50 per square foot installed. Smaller areas, such as bathrooms or laundry rooms, can cost as little as $700.00 while most larger projects see a high cost of around $6,000.00.
How much does it cost to replace a floor joist?
Total costs will depend on the extent of the damage and the ease of access to the joists (through a basement or crawlspace), but in general sistering averages $100-$300 or more per joist, and could run $1,000-$3,000 or more to repair a tilted, wavy or bouncy floor under an average room.
What is the subfloor?
The subfloor is typically something only builders and flooring installers deal with, as it is the piece of flooring that is closest to the floor joists. It is the structural flooring that provides a solid and stable flat surface to support an interior flooring like laminate or hardwood.