PVC: Is one of the best materials for carved signs especially when the background color can be white. Komacel brand PVC is totally weatherproof and resists fading. Its ready for use indoor or outdoors without any pretreatment, which makes it a better choice the wood.
High Density Urethane (signfoam): Is strong, durable, completely waterproof, and does not warp, bow, crack, rot or decompose, it's well suited for any indoor or outdoor application. Its made in the United States, it's nontoxic and free of VOCs and CFCs. It is also eco-friendly, with a minimum 16 percent green content.
Western Red Cedar: Is a good choice for interior and exterior use. All sign blanks are constructed from number one grade, kiln dried vertical grain. It has very good weather ability when properly maintained.