Cedar – Cedar is a great sign building material because of its resistance to bugs and rot. Cedar is easily sandblasted, revealing and emphasizing the natural grain of the wood. The downside is that cedar is a natural product and no matter how much care is used in the fabrication of the cedar sign the wood is still (eventually) subject to decay. Cedar is also becoming harder to come by.
Redwood – It has the same characteristics as Cedar but even more durable. It usually costs more than Cedar.
HDU (High Density Urethane) – HDU is a very popular choice for sandblasted, routed, or carved signs today and it’s the material we use for the majority of these types of signs. It is impervious to insects and rot and unaffected by temperature changes or moisture. Unlike cedar or redwood, HDU is readily available, is stable, carves easily, and paints beautifully. Wood grain can be routed into the surface, and when painted, looks very much like wood, but will last substantially longer. The enemies to HDU are the UV rays of the sun. As long as HDU has a solid painted overcoat it will be protected from the UV rays and will last much longer than wood.
Wood, Stone, Glass