Webjames hardie's portfolio of exterior products are engineered for climate® to endure these challenges. Our hardie® zone system helps you select the products appropriate to withstand the climate in your specific area, delivering lasting beauty and reliable protection. Siding that stands up to the elements. Hardie ® fiber cement products resist damage from fire, water,. Websep 30, 2024 · the hardiezone system is based on eight climate variables. These variables are rain, hurricanes, uv exposure, hail, snow, temperature ranges, humidity, and topographical factors. While evaluating the different variables, the company…