Commercial | Residential | Multifamily | Wall
Designed for easy installation and continuous insulation
With its unique fiberglass reinforced foam core, Thermax™ (ci) Exterior Insulation delivers one of the highest R-values available for immediate insulation and weather protection on the job site.
Featured Resources
Commercial Wall² System Tyvek® CommercialWrap® UNDER Exterior Continuous Insulation – Installation Bulletin
Commercial Wall System Tyvek® Fluid Applied WB+™ UNDER Exterior Continuous Insulation – Installation Guidelines
Integrating DuPont Building Envelope Solutions Products with DuPont Exterior Continuous Insulation – Install Bulletin
Thermax™ (ci)
DuPont™ Thermax™ (ci) Exterior Foam Insulation is a rigid board insulation consisting of a glass-fiber-reinforced polyisocyanurate foam core faced with nominal 1.25 mil embossed BLUE™ thermoset-coated aluminum on one side and 0.9 mil smooth, reflective aluminum on the other. Designed for continuous insulation, Thermax™ (ci)’s foam core is homogenous – featuring finer cell size and better cell orientation, reducing wormholes and knit lines – resulting in one of the highest R-values available (R-6.5 at 1”) for immediate insulation and weather protection on the job site, as well as long-term thermal performance.
Features & benefits
| Easy to cut, handle, and install |
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| Moisture Resistant |
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Physical Properties
| Method | Unit | Value | |
|---|---|---|---|
| Thermal Resistance<sup>1</sup> | ASTM C518 | R-value, min | 6.5 |
| Compressive Strength<sup>2</sup> | ASTM D1621 | psi, min. | 25 |
| Water Absorption<sup></sup> | ASTM C209 | % by volume, max. | 0.1 |
| Water Vapor Permeance<sup>3</sup> | ASTM E96 | perm, max | <0.04 |
| Maximum Use Temperature<sup></sup> | - | °F | 250 |
| Flexural Strength<sup></sup> | ASTM C203 | psi, min. | 55 |
| Flame Spread<sup></sup> | ASTM E84 | - | 25 |
| Smoke Developed<sup></sup> | ASTM E84 | - | <450 |
1Aged R-value at 1” of cured foam @ 75°F mean temperature. R-value expressed in ft2 •h•°F/Btu. R-value determined by ASTM C518 using the aging process in ASTM C1289 (90 days @ 140°F)
2Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first.
3Calculated flammability values for this or any other material are not intended to represent hazards that may be present under actual fire conditions.
Available Sizes
| R-Value | Thickness (in.) | Board Size (ft.) |
|---|---|---|
| 6.5 | 1 | 4 x 8 |
| 10.1 | 1.5 | 4 x 8 |
| 10.1 | 1.5 | 4 x 8 |
| 10.1 | 1.5 | 4 x 12 |
| 13 | 2 | 4 x 8 |
| 13 | 2 | 4 x 8 |
| 13 | 2 | 4 x 12 |
| 15.8 | 2.5 | 4 x 8 |
| 18.6 | 3 | 4 x 8 |
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