Image: ROOT


Concept… Construction… Community…

Materials and technologies used to build, decorate and enable component constructions are listed in alphabetical order with a short description here:

Medium-density fibreboard (MDF) is an engineered wood product formed by breaking down hardwood or softwood residuals into wood fibres, often in a defibrator, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure. MDF is generally denser than plywood. It is made up of separated fibres, but can be used as a building material similar in application to plywood. It is stronger and much denser than particle board. MDF density is typically between 500 kg/m3 (31 lbs/ft3) and 1000 kg/m3 (62 lbs/ft3). (Reminder: A thick MDF panel at 700-720 density in case of softwood fiber panels may be considered as high density whereas a panel of same density when made of hard wood fibers is not so.) There are different kinds of MDF, which are sometimes labeled by colour: Moisture resistant is typically green; Fire retardant MDF is typically red or blue.
SAFETY WARNING: Formaldehyde resins are commonly used to bind the fibers in MDF together, and testing has consistently revealed that MDF products emit free formaldehyde and other volatile organic compounds that pose health risks at concentrations considered unsafe, for at least several months after manufacture. Urea-formaldehyde is always being slowly released from the edges and surface of MDF. When painting, it is a good idea to coat all sides of the finished piece in order to seal in the free formaldehyde. Wax and oil finishes may be used as finishes but they are less effective at sealing in the free formaldehyde.



← return to Index or continue to: