Non-slippery & Barefoot-friendly deck, the surface is roughened by brushing. The GWC deck acts in its smallest particles, the open wooden fibers on the surface, like nature does. In the weathering process, the open wooden structures on the surface are transformed into cellulose. This optical colour change stops after about half a year when the patina has been fully formed. This elegant cellulose patina itself then acts as natural protection adding to the UV stabilization. Slight color changes and shades are desired, and emphasize the natural wooden appearance.