

Weather-Resistive Barriers: Polymeric Housewrap Fortifiber offers three grades of housewrap to address the wide-ranging construction requirements of builders nationwide. From ultra premium products with technologically advanced designs to highly cost-effective solutions that provide reliable protection, we manufacture the most versatile product line in the market.
WeatherSmart®
WeatherSmart represents a new generation in housewrap technology, offering an intelligent housewrap solution - one that delivers the ideal balance between water intrusion protection and moisture vapor breathability; so it can be used in any climate and behind most exterior claddings. The product is a polymeric weather-resistive barrier, utilizing a high-strength nonwoven substrate and a monolithic non-perforated coating of smart polymers. Its unique construction protects against the elements-while being extraordinarily durable and UV stable.
PlyDry™
PlyDry is a code-compliant, reliable tear-resistant housewrap that is very cost-effective. Its cross-woven polypropylene fabric design, and provides dependable tensile strength to protect the product from weather exposure on jobsites. The UV-resistant polyolefin coating offers 120 days of exposure time.

| Requirment | Water Holdout (Protection Against Water Intrusion) ASTM D-779 | Vapor Permeability (ability to Allow Moisture to Pass through the material) ASTM E-96 | Tensile Strength ASTM D-882 MD CD |
Grade | ||
| WeatherSmart | 65-Minutes | 56 Grams | 8 perms | 45lb. f/inch* | 40lb. f/inch* | Premium |
| PlyDry | 24-Minutes | 44 Grams | 6.3 perms | 62lb. f/inch* | 28lb. f/inch* | Classic |
* ASTM D-5034
The products in the above table are continually tested in accordance with ASTM procedures. The values shown are averages obtained in these tests.