Commercial | Residential | Multifamily | Wall
Engineered to increase R-value in wall systems
Effective in any season, Tyvek® ThermaWrap® LE protects against heat loss in the cold weather and keeps heat out in when the temperature rises. A low-emission surface helps to raise R-values for wall assemblies.
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Tyvek® ThermaWrap® LE
DuPont™ Tyvek® ThermaWrap® LE is made with a metallized, low-emission (low-e) surface that reflects solar radiation away from the building. In cold weather, this helps prevent radiant heat loss from within the structure. In warmer weather, Tyvek® ThermaWrap® LE turns the tables, reflecting warm air out and away from the structure, to help improve air-conditioning efficiency. In all seasons, that can help make both residential homes and commercial buildings more comfortable, more energy efficient, and less costly to operate.
Features & benefits
| Helps block air infiltration and exfiltration |
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| Improves energy efficiency |
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Physical Properties
| Method | Unit | Value | |
|---|---|---|---|
| Effective R-value (including 3/4" air space)<sup></sup> | ASTM C1371 | - | R-2 |
| Air Penetration Resistance<sup></sup> | Gurley Hill (TAPPI T-460) | sec/ 100cc | 900 |
| ASTM E2178 | cfm/ft2 @ 1.57 psf | 0.002 | |
| Water Vapor Transmission<sup></sup> | Method B | perms | 68 |
| ASTM E96-00 | g/m2-24 hrs | 475 | |
| Water Penetration Resistance<sup></sup> | AATCC 127 | cm | 210 |
| Basis Weight<sup></sup> | TAPPI T-410 | oz/yd2 | 2.5 |
| Breaking Strength<sup></sup> | ASTM D882 | lbs/in | 29/27 |
| Tear Resistance (Trapezoid)<sup></sup> | ASTM D1117 | lbs | 44172 |
| Surface Burning Characteristics<sup></sup> | Developed Index | - | Class A |
| Developed Index | - | Class A | |
| Developed Index | - | Class A | |
| ASTM E84 | - | 10 | |
| Ultra Violet Light Exposure (UV)<sup></sup> | - | - | 120 days (4 months) |
Available Sizes
| Roll width (ft.) | Roll length (ft.) | Roll coverage (ft.<sup>2</sup>) |
|---|---|---|
| 5 | 50 | 250 |
| 9 | 33 | 297 |
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