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Why James Hardie / Product Comparison Guide
HardieWrap™ weather barrier
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HardieWrap™ weather barrier |
Non-Perforated Housewrap |
Perforated Housewrap |
Building Paper / #15 Felt |
Comments |
| Water Resistance AATCC127 |
325 cm |
186-210 cm |
10-25 cm |
52 cm |
Higher is better. Compared to other products, HardieWrap weather barrier is more resistant to water intrusion. |
| Water Vapor Permeance ASTM E-96A |
15 Perms |
7-58 Perms |
6-18 Perms |
5-14 Perms |
ICC requires a water vapor permeance greater than 5. HardieWrap weather barrier provides sufficient drying while reducing water vapor intrusion. |
| Air Penetration Resistance TAPPI T-460 |
> 1800
Seconds/100cc |
300-490
Seconds/100cc |
8-16
Seconds/100cc |
N/A
not tested |
Higher is better. HardieWrap weather barrier is more air resistant, which increases the potential to improve energy efficiency. |
| Trapezoid Tear Strength ASTM D1117 |
18/15 lbs. |
6/6 lbs.* |
37/49 lbs. |
.44/.44 lbs. |
Higher is better. Tears can result in leaks,leading to serious water damage and mold. |
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