DuPont™ Thermax™ Heavy Duty Foam Insulation
Commercial | Residential | Multifamily | Wall
Made for high durability in difficult conditions
As an insulation and interior finish system for walls and ceilings, Thermax™ Heavy Duty Insulation stands up to the elements with a fiberglass core and thermoset-coated aluminum facing.
DuPont™ Thermax™ Heavy Duty Foam Insulation
Thermax™ Heavy Duty Insulation* is designed as an insulation and interior finish system for walls and ceilings in metal, wood post frame, and concrete or masonry buildings, as governed by building codes. Thermax™ Heavy Duty consists of a glass-fiber-reinforced polyisocyanurate foam core faced with nominal 4 mil embossed white thermoset-coated aluminum on one side and 1.25 mil embossed aluminum on the other. The tough 4 mil white embossed aluminum surface makes it a durable insulation/finish choice for use in moderate-impact areas, and it can be pressure washed up to 2,000 psi with a 15-degree or greater spray tip (at 3’ minimum distance). Thermax™ Heavy Duty also offers high, long-term thermal resistance, with facers that help prevent water and water vapor intrusion into the insulation foam allowing it to stabilize at a higher R-value*. Used in conjunction with the appropriate joint closure system for the application, Thermax™ Heavy Duty – with its low perm rating – can help to reduce moisture condensation within and behind the insulation.
* Thermax™ Heavy Duty Insulation is a former product of The Dow Chemical Company
Features & benefits
| Feature | Benefit |
|---|---|
| Easy to cut, handle, and install |
|
| Moisture Resistant |
|
Physical properties
| Method | Unit | Value | |
|---|---|---|---|
| Compressive Strength1 | ASTM D1621 | psi, min. | 25 |
| Water Absorption | ASTM C209 | % by volume, max. | 0.1 |
| Water Vapor Permeance | ASTM E96 | perm, max | <0.03 |
| Maximum Use Temperature | - | °F | 250 |
| Flexural Strength | ASTM C203 | psi, min. | 55 |
| Light Reflectance, Visual Light Spectrophotometer | - | % | 65 |
1 Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first
Available sizes
U.S.
| Thickness (in.) | R-Value | Board Size (ft.) | Edge Treatment | |
|---|---|---|---|---|
| 0.625 | 4.1 | 4 x 8, 4 x 12 | Square Edge | |
| 1.0 | 6.5 | 4 x 8, 4 x 12 | Square Edge | |
| 1.55 | 10.1 | 4 x 8, 4 x 12 | Shiplap | |
| 2.0 | 13.0 | 4 x 8, 4 x 12 | Shiplap |
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