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HardieZone® System - Engineered for Climate®

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.
HardieZone Map

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 your zip code below to learn which line of HardieZone siding products is right for your local climate.


Enter your zip code, e.g. 92691.

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