How long does Hardie siding last?

HardiePlank carries a 30-year non-prorated limited warranty and commonly lasts 50 or more years when properly painted and maintained. The fiber cement material does not rot, warp, or attract insects. Repainting every 10 to 15 years is the main maintenance requirement.

Can I install Hardie siding myself?

Yes, but fiber cement is approximately 3 times heavier than vinyl siding and requires specific tools for cutting (fiber cement shear or circular saw with a polycrystalline diamond blade). You must wear an N95 respirator when cutting to protect against silica dust. Most homeowners hire professional installers, but experienced DIYers with a helper can complete the project.

How much does Hardie siding cost installed?

Materials cost $1.00 to $2.50 per sq ft depending on finish (primed vs. factory-painted). Professional installation adds $3 to $6 per sq ft. For a 2,000 sq ft home, total installed cost typically ranges from $10,000 to $20,000. Factory-painted ColorPlus boards cost more upfront but eliminate the need for on-site painting, saving labor.

What nails should I use for Hardie siding?

James Hardie recommends stainless steel or hot-dipped galvanized siding nails. Blind nailing (through the top of the board, hidden by the overlapping course above) is preferred. Nails should penetrate at least 1.25 inches into the studs. Do not use electro-galvanized nails, as they will corrode and leave rust stains.

Hardie siding vs. vinyl siding — which is better?

Hardie fiber cement siding is more durable, fire-resistant, and has a more authentic wood-like appearance than vinyl. However, it costs 2 to 3 times more installed and is significantly heavier. Vinyl is less expensive, lighter, and easier to install but can crack in cold weather, warp in heat, and lacks the premium appearance of fiber cement.

Does Hardie siding need to be painted?

Primed HardiePlank must be painted with 100% acrylic latex paint within 180 days of installation. Factory-painted ColorPlus boards come with a baked-on finish and a 15-year paint warranty. Both options need repainting every 10 to 15 years, though ColorPlus finishes tend to last longer due to the factory application process.

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About This Material

HardiePlank (James Hardie fiber cement siding) is a lap siding made from a mixture of cement, sand, and cellulose fiber. Standard HardiePlank boards are 12 feet long and 6.25 inches wide with a 5-inch exposed face, covering approximately 1.17 sq ft per linear foot at 4-inch exposure. Fiber cement siding is fire-resistant (non-combustible), insect-resistant, rot-proof, and dimensionally stable — it does not expand and contract with temperature changes like vinyl or wood. HardiePlank is available in smooth or woodgrain textures, factory pre-primed or factory pre-painted (ColorPlus Technology) in dozens of colors. Pricing ranges from $1.00 to $1.50 per sq ft for primed boards and $1.50 to $2.50 for pre-painted. HardiePlank carries a 30-year non-prorated limited warranty when properly installed. Related products include HardiePanel (4x8 vertical sheets), HardieShingle (shake-style panels), and HardieTrim (trim boards). Fiber cement is heavier than vinyl (about 2.5 lbs per sq ft) and requires specific cutting tools to manage silica dust.

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Installation Tips

•Use fiber cement specific nails (hot-dipped galvanized or stainless).
•Paint cut ends with matching touch-up paint.
•Maintain 6" clearance from grade and 1" from finished grade.
•Use a fiber cement shear blade to reduce dust.

Common Mistakes to Avoid

Using regular nails — corrosion causes staining.
Not sealing cut ends.
Installing without back-priming in high-moisture areas.

Free Hardie Plank Calculator — Boards & Cost (2026)

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About This Material

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