Hardboard

Hardboard is also called presswood, duratec, fibrex or masonite.

Hardboard is a composite panel manufactured primarily from inter-felted ligno-cellulosic fibers consolidated under heat and pressure. Other materials may be added during the manufacturing process to improve certain properties, such as resistance to abrasion and moisture, and increased strength and durability.

Hardboard is used in a variety of applications including furniture components, wall paneling, exterior siding and trim, underlayment, interior trim, perforated and utility boards. Panels are available in many forms other than the familiar "brown board", including sophisticated woodgrains and embossed surfaces

Hardboard is produced by converting wood into fibers (defibering) and then reconstructing the fibers into panels. The American Hardboard Association defines hardboard as: "panel manufactured from inter-felted lignocellulosic fibers which are consolidated under heat and pressure in a hot-press to density of 31 pounds per cubic foot or greater."

• Surface is classified as either smooth one sided (S1S) or smooth two sides (S2S) and may be perforated.
• Generally 4' wide and 8' long, though presses from 5' x 16' and larger exist. New technology 4'-8' wide continuous presses are now common
• Thickness can vary from as thin as 1/10" to as thick as 7/16".
• Moisture content may vary between 2% and 9%, but the variance may not be more than 3% within any one shipment.

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