What is HDF and what is it made of?
A. Hardboard, also called high-density fiberboard, is a type of fiberboard, which is an engineered wood product. It is similar to particleboard and medium-density fiberboard, but is denser and much stronger and harder because it is made out of exploded wood fibers that have been highly compressed. Consequently, the density of hardboard is 31 lbs. or more per cubic foot and is usually about 50-65 lbs. per cubic foot. It differs from particle board in that the bonding of the wood fibers requires no additional materials, although resin is often added. Unlike particleboard, it will not split or crack. High density fiberboard, HDF, is basically a high-density, moisture-resistant fiber panel. It is made of wood residues (sawdust, shavings and wood chips) from wood processing factories. This ligneous material is ground into a pulp to which a melamine-urea-formaldehyde resin is added. This pulp is then dried and pressed into panels.