While its attributes and applications are not widely known, poly ash is unlike any other exterior building material. As the industry and world leader in the milling of poly ash, we’ll explore how DURATION® poly ash products provide design flexibility and ultimate value for exterior trim, moulding, millwork, and siding projects, from simple mouldings to complex millwork assemblies that meet and exceed the highest standards of historical architectural review board requirements… all from a material with 70% recycled content.