Treatment to hardwoods is generally a term used to provide a finish to the surface to protect the wood or keep or balance the colour, i.e. a French polish on a piece of furniture to enhance the quality or treatment to a floor would be to protect from wear. Hardwoods can have a treatment to preserve external timbers and save the colour from changing to silver grey. Treatment once started, has to have a maintenance programme to keep the treatment the same as when it was first treated.