The U.S. is the world’s largest producer of lumber, generating 30 billion board feet of lumber every year. (A board foot is the equivalent of a piece of lumber that is one foot long, one foot wide, and one inch thick.) 30 billion board feet is enough lumber to wrap the earth in a one-foot wide belt of lumber 228 times every year. Two-thirds of lumber usage in the U.S. is for home building and renovation.