Definition of Hardboard Hardboard is a generic term for a panel manufactured primarily from inter-felted ligno-cellulosic fibers, consolidated under heat and pressure in a hot press of density of 31 pounds per cubic foot (a specific gravity of about 0.5: or about 0.50 grams per cubic centimeter density) or greater. Other materials may be added during manufacture to improve certain properties such as stiffness, hardness, finishing properties, resistance to abrasion and moisture, as well as to increase strength, durability and utility. Major Hardboard Uses Smooth Surfaced Siding Textured Surfaced Siding Interior Hardboard Panels (Wet Finish) Interior Hardboard Panels (Laminated Finish) Interior Tileboard Industrial Hardboard Applications Testimonials from Users Charles Kuhn, Charles Kuhn Construction Company, Novato, California, and Robert Wilkenson, Wilkenson & Hartman, San Anselmo, California 1993 AHA Home of the Year Robert T. Mickey, Northwest Home Designing, Inc., Tacoma, Washington 1992 AHA Home of the Year Brad Pulley and Mike Adair, Pulley and Adair Custom Homes, Inc., Chapel Hill, North Carolina 1991 AHA Home of the Year Sam Nigh, Nigh Lumber Company, Soquel, California 1990 AHA Home of the Year 1210 West Northwest Highway, Palatine, IL 60067 USA Telephone: 847-934-8800 Facsimile: 847-934-8803 E-mail: aha@hardboard.org © 1999 AHA (American Hardboard Association)