Per the federal regulations contained in 49 CFR Part 26, Electronic Code of Federal regulations, a DBE is a for-profit small business concern that is: 1  At least 51 percent owned by one or more individuals who are both socially and economically disadvantaged.
Use a piece of lumber as a smash block to protect the plywood tongue. Smash the additional pieces of plywood in place. Installing Plywood Subfloor: Leveling and Finishing
1 Sagging wood panels: Repair the subfloor, as well as the beams and joists holding up the floor. This fix may require repairs to the structure of your home as well.  Rotted floor joists: If you can get to the subfloor, replace floor joists with new ones; otherwise, hire a hardwood flooring professional to help.