Boards, Fibre building
Boards, Fibre building : Made from actual wood fibres or woody plants which are felted together. If the boards are compressed with a hydraulic press medium and hardboards are produced. Tempered hardboard is made by impregnating standard hardboard with oils and resins. Boards not pressed are known as (soft boards) insulating boardswhich may be in sheet form or tiles. It can be bitumen impregnated. Not easily ignitable but all are combustible