Over the last several years, it has become important to use lumber treated for a specific use.  This can lower the amount of preservative and reduce the effect on the environment. Greatwood Lumber and Ace Hardware supplies Fire Retardant lumber and plywood, All Weather Wood Foundation material, Poles for Pole Barns, Fence Posts, Dowel and Rail Fence, and numerous types of treating.  Our most popular is L3, a non-metallic treatment used for above or below grade lumber.  The lumber has a nice tan color and is less corrosive than some other treatments.