Red Oak Hardwood floor on plywood above crawl space in hot humid climate

Hello,I am about to install red oak hardwood floor in my living room. The local installed wants to put 30 pound felt paper on the plywood subfloor to control moisture… Hello,I am about to install red oak hardwood floor in my living room. The local installed wants to put 30 pound felt paper on the plywood subfloor to control moisture…Read MoreGreenBuildingAdvisor