Brush box is a medium to large sized Australian hardwood that occurs along the edges of the rainforest areas of the central coast of New South Wales to Bowen in Queensland.
Its heartwood can vary in appearance, from a greyish pink through to a reddish brown, while the sapwood is usually paler in colour. Brush box has a fine and even texture with an interlocking grain – a feature that is appealing for appearance-based applications such as timber flooring, but can cause significant distortion during drying.
Brush box has a poor workability in part due to its density, interlocked grain and the presence of silica. It does however provide good resistance to wear and splintering. The natural waxiness may cause problems with some adhesives but provides a very good base for paints and stains. Brush box is not suitable for steam bending.
Brush box is used for a variety of applications including flooring, cladding, paneling and some structural applications. It is generally available for use in New South Wales and Queensland.