Wood fibre

Wood fibres can be pressed into various types of flat boards, used as insulation, renderboard and sarking.

This slurry is then poured on to a belt sieve and compressed to remove as much water as possible and heated with steam to bond the fibres together.

The mixture is then laid on a conveyor belt and compressed to the correct thickness and density, then steam is applied to cure the boards.

Wet-process boards are typically denser and have much stronger capilliary action to move water around.

[4] However, more recent research suggests that wood fibre can have detrimental effects on "plant growth regulators".