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
A moisture barrier between the wood and the subfloor is a must over concrete or gypsum floors and not a bad idea even over a wood subfloor. The barrier helps maintain an even moisture balance in the floor. There are a number of types of wood flooring that can be used over heated floors.