CoreBoard Sunstrand CoreBoard is a natural alternative to traditional materials made from a proprietary blend of natural, rapidly renewable materials. It offers stability and durability, while helping both the natural ecosystem and local economies. CoreBoard is comparable in performance to other wood-based board products and is formaldehyde-free. Its unique visual texture can be stained and sealed and supports LEED certification. It is also an aesthetically modern design choice for homes and businesses. Sunstrand CoreBoard is a medium density, light weight board, that performs like other wood-based hardboard products using standard wood making tools. Look below for applications and click here to learn what industries we serve.