Redwood is an excellent choice for deck material. But you should be very aware of the different grades of redwood. Essentially, the grade is determined by which part of the tree the wood came from, among other factors. The best, and most expensive grade is heartwood, which comes from the heart (or center) of the tree.What is a composite deck material?
Composite decking is decking material made from an engineered wood product. It contains a mix of resins and wood or cellulose material.