The National Wood Flooring Association (NWFA) is set to hold the first session of its new Subfloor Solutions School May 18-20 at the association's training center in St. Louis. The instruction is designed to provide broad-based, hands-on training for subfloor preparation and repair on both concrete and plywood subfloors. Other topics will include patch products, sealing concrete, shingles and felt, solid wood over concrete, floating subfloors, foam systems and moisture meters. For more information, visit, or call (800) 422-4556.