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Hardie

How to Maintain James Hardie Board

Simple maintenance that keeps a Hardie exterior performing and looking new.

5 min read · Hardie

Hardie is low-maintenance, not no-maintenance. A little routine attention extends its life and looks.

Annual cleaning

A gentle wash removes dust and mildew, especially on shaded north elevations.

Caulk and finish checks

Inspect sealant at transitions and penetrations yearly; address gaps before water finds them.

When to repaint

Factory finishes last many years; sun-facing elevations may need attention sooner.

Key takeaways

  • Wash gently once a year
  • Check caulk at transitions
  • Refresh sun-facing elevations first

FAQ

Quick Answers

Factory-finished board often goes well over a decade; exposure dictates timing.

Yes, we assess and maintain existing fiber cement exteriors.

Sources

Authoritative references

External links to government, code, and manufacturer sources. Sierra Siding is not affiliated with these organizations; references are provided for verification.

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