What is an acceptable range for moisture content of framing lumber?
According to the USDA’s Forest Products Laboratory, “Softwood lumber intended for framing in construction is usually targeted for drying to an average moisture content of 15%, not to exceed 19%. However, softwood lumber for many other uses is dried to a low moisture content, 10% to 12% for many appearance grades to as low as 7% to 9% for furniture, cabinets, and millwork. Hardwood lumber for framing in construction, although not in common use, should also be dried to an average moisture content of 15%, not to exceed 19%. Hardwood lumber for furniture, cabinets, and millwork is usually dried to 6% to 8% moisture content.” For the full text of this statement and more related information, visit www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/ch12.pdf.
