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Weather Barrier


Green & Sustainable

Enabling green/sustainable projects across the nation.

Choose Durability

James Hardie® Siding is designed to last a lifetime. Find out why we offer an up to 50-year warranty.

Moldblock Technology

HardieBacker™ Cement Board with Moldblock™ Technology delivers superior protection against mold.

HardieWrap™ Weather Barrier Solution

James Hardie's mission is to build better homes. We pioneered better siding, the first layer of defense against the elements. Now, HardieWrap™ weather barrier provides a second layer of defense. Together, James Hardie siding and HardieWrap weather barrier work to form a major part of the protective building envelope.

Most building codes require a water-resistive barrier over the sheathing and behind the siding. HardieWrap weather barrier is a higher-performance, water-resistive barrier uniquely designed for better protection and fast and easy installation. When properly installed under James Hardie® fiber-cement siding, it gives your customers' homes an unmatched double line of defense against water damage, mold and air penetration. And, it comes with the name you and your customers know you can count on — James Hardie.

HardieWrap weather barrier solution can be used on single-family homes, duplexes, town homes, multi-family homes and some light commercial buildings.
HardieWrap™ weather barrier
  • Unique MicroTech™ Coating provides a balance of water holdout and breathability
  • Superior air resistance to save energy in the home
  • Thicker sheet for exceptional tear resistance

HardieWrap™ Flashing
  • Made of butyl rubber for broad temperature applications
  • Non-woven top sheet for superior adhesion and strength
  • Peel-and-stick self adhesive for easy and quick installation

HardieWrap™ Flex Flashing
  • Made of butyl rubber adhesive for broad temperature applications and better compatibility with sealants
  • Stretches to conform to most doors, windows and other penetrations
  • Self-adhesive for easy and quick installation

HardieWrap™ Seam Tape
  • Seals vertical and horizontal seams to save energy
  • High performance even in low temperatures
  • No VOCs (volatile organic compounds) or solvents which can reduce adhesion over time

Copyright 2008 James Hardie International Finance B.V.