Residential Installation Instructions

HardieZone® System

HardieZone System map

HardieZone System

James Hardie provides siding products that are Engineered for Climate®. We call this The HardieZone System. It provides siding with specific performance attributes relative to the climate where the product is being used. As a result, James Hardie gives you the ability to put the optimum siding on a project regardless of your location.

The Science Behind the Siding

We based The HardieZone System on the eight individual climatic variables that primarily affect long-term performance of siding. Using these factors we arrived at ten distinct climatic zones. Though different, we found common variables in certain regions, allowing us to engineer the HZ5® product line for zones 1 through 5 and the HZ10® product line for zones 6 through 10.

What's My HardieZone?

Finding the right exterior for your zone is easy. Enter a zip code below to learn which line of HardieZone siding products is right for your project's local climate.