The Hardie® Zone System!

Hardie® siding products are Engineered for Climate®

Engineered for Climate®

James Hardie provides siding products that are Engineered for Climate®. We call this The Hardie® Zone 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.
Performance & Durability
The Hardie® Zone System
The Hardie® Zone System
What's my Hardie® Zone?
Enter your zip code
We created the Hardie® Zone system to protect your projects, regardless of your region. Whether you work in wet, freezing conditions or the heat, humidity and blistering sun, there’s a Hardie® Zone for you.

Enter your zip code to determine which Hardie® Zone products are right for your job.

Science Behind the Siding

We based The Hardie® Zone 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.

HZ5® Fights Cold, Snow, Ice and Worry

The HZ5® product line is right at home in climates with freezing temperatures, extreme seasonal temperature variations, and snow and ice. To ensure its beauty matches its durability, we've engineered the surface for higher performance, giving it superior paint adhesion and moisture resistance. In addition, we've added a drip edge to provide improved water management. So you are not only getting an exterior that performs well in cold, nasty climates. You're getting an exterior engineered just for it.
Our HZ5 products are formulated to resist damage from moisture in regions with extreme seasonal temperature variations and year-round precipitation.
Resists damage from ice, snow and freezing temperatures
30-year limited, transferable warranty
Maintains dimensional stability under challenging weather conditions
Complete exterior available in lap, shingle, panel, fascia, trim and soffit

HZ10® Defies Blistering Sun, Hurricane-Force Winds and Sheets of Rain

Even when Mother Nature isn't very motherly, the HZ10® product line delivers legendary James Hardie durability. This siding was engineered for areas with hurricane-force winds, salty sea air of the coast, and the brutal, humid heat of the Deep South. Engineered specifically for these climates, HZ10 boards resist cracking, splitting, rotting and swelling season after hot, humid, tropical storm season.
Our HZ10 products are formulated for superior performance in areas that experience both strong sunlight and high winds, hurricanes and storms.
Resists damage from moisture including cracking, splitting, rotting and swelling
30-year limited, transferable warranty
With ColorPlus® Technology offering exceptional fade resistance
Resists flame spread
Complete exterior available in lap, shingle, panel, fascia, trim and soffit
Unprecedented Peace of Mind
Hardie® fiber cement siding
30-year limited warranty
Hardie® trim
30-year limited warranty
We're so confident The Hardie® Zone System siding can withstand the rigors of the North American climate, we're offering our strongest warranty. This outstanding 30-year* limited, transferable warranty offers nonprorated product coverage for the entire 30 years.

Need Answers?

Call 1-888-J-HARDIE (1-888-542-7343) for product information and expert advice.