Abstract: A method of manufacturing cladding which comprises the steps of making cellulosic material in the form of particles in which about 20 to 30% of the particles comprise fine particles and the remaining percentage comprise coarse particles which have a thickness of 0.35 to 0.7 mm. A bonding resin is then added to the cellulosic material and the cellulosic material is then formed into a mat. The mat is then passed to a hot press and the press is operated in a manner to obtain rapid closure from the initial contacting of the press platens with the mat until the cladding material so formed is of required thickness. The coarse particles form a core between two layers of fine particles and the core has a void content of between 10 and 30% preferably about 25%.