The HardieZone System, the company’s latest generation of fiber-cement siding, is formulated and engineered for optimum performance under varying climate conditions to further ensure durability and longevity. HZ5 siding, for northern climates, offers a formulation designed to withstand freezing temperatures, snow, ice, and moisture. It also includes a new beveled top and drip edge to improve water management. HZ10 stands up to the heat and unstable conditions of southern and western climates, including coastal regions, and is resistant to moisture, cracking, swelling, high winds, termites, and flame. 888.542.7343.