The wood grain extruded aluminum for pergola is excellent if it comes with a powder-coated finish. Outdoor aluminum structures with powder-coated surfaces enhance the already good corrosion resistance and rust resistance of the aluminum alloy. When your pergola has this finish color, you will not have a second thought no matter the season.  All our extrusions for pergola are coated with the highest quality powder coating. They are reliably resistant to weather elements.