High-density wood fiber board impregnated with drying oils, which makes the board water-repellent and provides a higher moisture resistance. Oil-cured board consists of wood fibers that are soaked up and compressed by high pressure and heat.
 During the production process, the board is impregnated with drying oils.
 As a rule, no additives of glue are needed, but the wood's natural lignin binds the fibers together. The boards can be considered extra allergy-friendly as the formaldehyde content is minimal (same proportion as in natural wood material).