DuPont™ Thermax™ Sheathing Insulation
Nonstructural, Glass-Fiber-Infused Rigid Polyiso Insulation
DuPont™ Thermax™ Sheathing Insulation
Nonstructural, Glass-Fiber-Infused Rigid Polyiso Insulation
<br><b>DuPont™ Thermax™ Sheathing Polyisocyanurate Insulation</b> is a non-structural, rigid board insulation consisting of a glass-fiber-infused polyisocyanurate foam core laminated between 1 mil smooth, reflective aluminum facers on both sides. The glass-fiber reinforcement contributes to improved fire performance and dimensional stability.
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<b>Thermax™ Sheathing Insulation</b> 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. In the USA, Thermax™ Sheathing can be installed as exterior continuous insulation and also installed exposed to the interior without a thermal barrier. Used in conjunction with the appropriate joint closure system for the application, Thermax™ Sheathing – with its low perm rating – can help to reduce moisture condensation within and behind the insulation.
Features & Benefits
Specifications
Testing
<b>Thermax™ Sheathing Insulation</b> exhibits the properties and characteristics indicated in the table below when tested as represented. Review all instructions and (Material) Safety Data Sheet ((M)SDS) before use. Please contact DuPont at 1-833-338-7668 when additional guidance is required for writing specifications that include this product.
| TEST METHOD | TEST TITLE | PROPERTY | RESULTS |
|---|---|---|---|
| FIRE | |||
| UL 723 | Test Method for Surface Burning Characteristics of Building Materials | Surface Burning Characteristics1 | Flame Spread ≤ 25 Smoke Developed ≤ 450 Core and Finished Product |
| NFPA 285 | Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Wall Assemblies Containing Combustible Components | Fire Progagation - Exterior2 | Pass |
| UL 1715 | Standard for Safety Fire Test of Interior Finish Material | Fire Progagation - Interior | Pass |
| NFPA 286 | Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth | Fire Progagation - Interior | Pass |
| NFPA 268 | Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radiant Heat Energy Source | Ignitabiilty - Exterior | Pass |
| THERMAL | |||
| ASTM C518 | Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus | Thermal Resistance 1 inch @ 75°F mean temp3 | 6.9 ft2 •h•°F/Btu, R-value, min. |
| ASTM D2126 | Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging | Dimensional Stability | 0.2% linear (length & width) |
| STRENGTH | |||
| ASTM D1621 | Standard Test Method for Compressive Properties of Rigid Cellular Plastics | Compressive Strength4 | 25 psi |
| ASTM C203 | Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation | Flexural Strength | 75 psi |
| ASTM D1623 | Standard Test Method for Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics | Tensile Strength | 500 psf, min. |
| AIR | |||
| ASTM E2178 | Standard Test Method for Determining Air Leakage Rate and Calculation of Air Permeance of Building Materials | Rate of Leakage | <0.001 L/s*m2, max |
| ASTM E2357 | Standard Test Method for Determining Air Leakage Rate of Air Barrier Assemblies | Air Leakage | No Leakage |
| ASTM E283 | Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Skylights, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen | Rate of Leakage | <0.02 L/s*m2, max |
| WATER | |||
| ASTM E96 | Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials | Water Vapor Permeance. | 0.01 perm |
| ASTM C209 | Standard Test Methods for Cellulosic Fiber Insulating Board | Water Absorption | 0.1% volume, max. |
| ASTM E331 | Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference | Water Penetration | Pass |
1Calculated flammability values for this or any other material are not intended to represent hazards that may be present under actual fire conditions.
2See Jensen Hughes engineering judgement
3R-value of 1.0-inch of foam measured @ 75°F mean temperature, determined in accordance with ASTM C518 after aging for 90 days @ 140°F.
4Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first.