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James Hardie Siding Lap Grey

James Hardie Fiber Cement Siding Product Details

James Hardie Lap Siding Fiber Cement

James Hardie HZ10 Fiber Cement Lap Siding

James Hardie HZ10 Fiber Cement Lap Siding is a type of fiber cement siding manufactured by James Hardie, a well-known company specializing in fiber cement building products. The “HZ10” designation refers to its durability and suitability for use in regions with harsh climates, particularly those prone to strong winds, hurricanes, and high humidity.

Here’s what each part of the name means:

James Hardie: Is the brand name of the company that produces the siding. James Hardie Industries plc is an Irish-based company that is a global leader in fiber cement building materials.

HZ10: HZ10 is a product specification code used by James Hardie to indicate the siding’s resistance to damage from various environmental factors. The “HZ” stands for “HardieZone,” which is James Hardie’s system for categorizing its products based on regional climate differences. The “10” specifically refers to the highest level of durability within the HardieZone system, indicating that the siding is engineered to withstand extreme weather conditions, including high winds, heavy rainfall, humidity, and temperature fluctuations.

Lap Siding: Lap describes the style of siding. Lap siding, also known as clapboard siding, is a type of horizontal siding where each board partially overlaps the one below it. This creates a distinctive layered look that is commonly associated with traditional and colonial-style homes.

Overall, James Hardie HZ10 Lap Siding is designed to provide both aesthetic appeal and long-lasting protection for homes, making it a popular choice for homeowners looking for durable and weather-resistant siding options.

James Hardie Siding is made from cellulose fibers, sand, and cement. The mixture is dyed and then pressed into a board with a wood grain pattern.

Specifications for James Hardie Lap boards include:

  • Thickness: 0.312”
  • Weight: 2.40 lbs. per square foot
  • Length: 144”
  • Width options: 6.25”, 7.25”, 8.25”, 9.25”, 12”

Hardie Plank is the leading fiber cement manufacturer in the industry, with its products on more than 5.5 million homes in the United States. Hardie includes a 30-year non-pro-rated warranty that transfers to the next homeowner.


WA 360-605-9030
OR 971-978-8775

Posted on by Elite Home Exteriors NW
James Hardie Fiber Cement Siding Product Details

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