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Hardie™ Weather Barrier

The products you’ll see below are readily available for zip code . Not your zip code? Update it now.

Protect Your Home

Together, Hardie™ Weather Barrier, Hardie™ Pro-Flashing, Hardie™ Flex Fashing and Hardie™ Seam Tape form an important part of a home's weather protection envelope.
When installed properly, these products help prevent water damage, mildew and energy loss.
In independent tests, Hardie™ Weather Barrier outperformed its nearest competition in each of these categories: water holdout, air penetration resistance and tear resistance.

View the test results...
Hardie™ Weather Barrier is installed over the sheathing—beneath the exterior siding—to reduce water and air infiltration.
I've been using Hardie siding in the Texas heat for over 10 years. The homes I built then still look brand new today.
Jim Sargent is the owner at AndersonSargent Custom Builder, LP. in Waxahachie, Texas. and is an NAHB-appointed energy efficient construction instructor.

Need to Know

Each Hardie™ Weather Barrier product has unique qualities and purposes. Learn more about the products, as well as best uses and practices, below.

Better Product

Hardie™ Weather Barrier has superior air resistance and tear resistance compared to the nearest competition.

Meets Code

Hardie™ Weather Barrier may be used as both a water resistive barrier and as an air barrier in accordance with nationally recognized residential and commercial building codes as specified in ESR-2658.

Fire Rated

Hardie™ Weather Barrier ranks as a Class A fire-rated product.

UV Stable

Hardie™ Weather Barrier has a UV stability of up to 180 days. Ensure that Hardie™ Weather Barrier is properly stored and handled prior to installation.

High Performance

Hardie™ Weather Barrier must be installed with the printed side out for best performance.

Superior Adhesion

Hardie™ Weather Barrier flashing adheres to sheathing and housewrap, even in extreme temperatures, and contains no asphalts, VOCs (volatile organic compounds) or solvents, which can reduce adhesion over time.

Precision Oriented

Hardie™ Weather Barrier flashing should be used on windows and doors with straight edges. Hardie™ Weather Barrier Flex Flashing should be used on the sill pan and custom windows or doors.


Hardie™ Weather Barrier Pro-Flashing and Flex Flashing self-seal around fasteners and are easy to install by peel and stick application. Additional fasteners are not necessary.

Full Product Suite

Hardie™ Weather Barrier Seam Tape is designed specifically for the Hardie™ Weather Barrier solution.

For complete installation instructions, please go to HardieInstallation.com.