How long does Hardie siding last?

HardiePlank carries a 30-year limited warranty and commonly lasts 50+ years when properly painted and maintained.

Can I install Hardie siding myself?

Yes, but it is heavy (3x heavier than vinyl) and requires fiber cement tools. Most homeowners hire it out, but experienced DIYers can do it.

Hardie Plank Siding Calculator

Calculate the number of HardiePlank fiber cement boards needed for your exterior walls.

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Enter Your Measurements

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How to Use This Calculator

1Calculate wall area.
2Click Calculate.

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About This Material

HardiePlank is fiber cement lap siding. Standard 5/4×6 boards at 4-inch exposure cover approximately 1.17 sq ft per linear foot. It is fire-resistant, insect-resistant, and dimensionally stable.

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.