Durock cement board Next Gen is the lightest cement board on the market. It is easier to cut and fasten installs up to 20% faster and protects against moisture and mold. All of which gives you the ability to do a better job in a shorter amount of time. Equally suitable for both wood and steel framing applications it is ideal for use in partitions walls floors soffits countertops and ceilings in wet or dry areas. Features: Non-combustible and can be used in a variety of fire-rated designs. It has low thermal and hygrometric expansion that helps prevent finish cracking. Includes a wind load rating of 30 PSF and is UL Classified for fire performance.