The NWFA Installation and Sand and Finish Guidelines offer industry-accepted standards for hardwood flooring techniques. These guidelines are regularly reviewed by a committee of industry experts.
These guidelines/standards for the installation of hardwood flooring were developed by the NWFA Installation Guidelines Task Force, using reliable installation principles, with research of all available wood flooring installation data and in consultation with leading industry authorities. The standards are not intended to apply to unrelated wood floor issues absent a causal connection: