With easy-to-apply DuPont products, you’ll be equipped to seal out drafts and air leaks, block bulk water, and promote drying – keeping everybody inside comfortable in all types of weather.

Moisture management starts with the wrap. HardieWrap® weather barriers deliver the performance you've come to expect from James Hardie.

LeakBarrier Door and Window Tape, ValleyFlash and Asphalt Organic Base Sheets help prevent water, air and moisture leaks.

Engineered specifically to meet the needs of the commercial construction marketplace, the DuPont™ Tyvek® Fluid Applied WB System delivers convenience of fast, pressure rolled or sprayed application.

With over 25 years of proven performance on millions of homes, DuPont™ Tyvek® weather barriers play an integral role in the world’s leading home and commercial weatherization solutions.