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DuPont™ Thermax™ Basic NH Insulation

Non-Halogenated (NH), High-Performance, Glass-Fiber Reinforced Polyiso Foam Insulation

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DuPont™ Thermax™ Basic NH Insulation

Non-Halogenated (NH), High-Performance, Glass-Fiber Reinforced Polyiso Foam Insulation

<br /><b>DuPont™ Thermax™ Basic NH Polyisocyanurate Insulation</b> is a non-structural, rigid board insulation consisting of a glass-fiber-infused, closed-cell polyisocyanurate foam core laminated between 1.0 mil smooth reflective aluminum facers on both sides. As a result, <b>Thermax™ Basic NH Insulation</b> offers high, long term R-value providing continuous, durable insulation within the building envelope. <br /><br /> <b>Thermax™ Basic NH Insulation</b> is engineered to achieve a Class A fire rating, making it suitable for a variety of concealed and exposed applications. It meets the stringent requirements of a flame-spread index of 25 or less and a smoke-developed index of 450 or less. Additionally, it features NFPA 285 tested assemblies, approved for use in Exterior Walls of Types I, II, III, and IV construction, in accordance with Section 2603.5 of the International Building Code.
 
 
 
 
 
 

Features & Benefits 

 
 
 

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Ease of Installation
  • Installs quickly to walls including girts, steel stud, tilt-up, block and wood.
  • Is lightweight, easy to cut, handle and install.
  • Can be sawed or cut with a knife, small hand saw or circular saw.
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High Performance Durability
  • Class A fire-rated and can be used in both concealed and exposed areas within a building.
  • Offers increased durability on the job site, leading to less damage and less job-site waste.
  • R-Value of 6.6 at 1" thickness.
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Moisture Resistant
  • Helps reduce the potential for condensation within the wall assembly.
  • High R-value can provide enhanced thermal efficiency.
  • Facers help reduce air penetration and water vapor intrusion.
 
 
 

Specifications

 
 
 

Standard Sizes

Thickness Width Length R-Value Edge Treatment
1.0 in. 4 ft. 8 ft. 6.6 Square Edge
1.55 in. 4 ft. 8 ft. 10 Square Edge
2.0 in. 4 ft. 8 ft. 13.0 Square Edge
3.0 in. 4 ft. 8 ft. 18.5 Square Edge

Note: Please be advised that additional sizes may be available. Availability of all sizes varies by region and is subject to change. For further information, please contact your local DuPont Sales Representative or call us at 1-866-338-7668.

 
 
 

Testing

<b>Thermax™ Basic NH 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
ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials Surface Burning Characteristics1 Flame Spread ≤ 25
Smoke Developed ≤ 450
Core and Finished Product
UL 1715 Standard for Safety Fire Test of Interior Finish Material Fire Progagation - Interior Pass
NFPA 285 Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Wall Assemblies Containing Combustible Components Fire Progagation - Exterior2 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 6.6 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 0.4% linear (length & width)
STRENGTH
ASTM D1621 Standard Test Method for Compressive Properties of Rigid Cellular Plastics Compressive Strength4 20 psi
ASTM C203 Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation Flexural Strength 50 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 Leakage rates less than 0.0001 L/s/m2
at a test pressure of 75 Pa. 		Pass
ASTM E2357 Standard Test Method for Determining Air Leakage Rate of Air Barrier Assemblies Air Leakage No Leakage
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.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

FAQ

How long can the DuPont™ Thermax™ Brand Insulation Basic NH be left exposed to UV?
6 months
Can I use DuPont™ Thermax™ Brand Insulation NH on my walls and ceilings? 
Yes, where UL 1715 is accepted for compliance or specification.

Comprehensive UL and FM approvals including NFPA 286 for Walls only or Ceilings only up to 3”. Class-A fire rating: can be left exposed to the interior without a thermal barrier.

Is DuPont™ Thermax™ Brand Insulation Basic NH NFPA 285 evaluated?
NFPA 285 approval up to 3” behind non-combustible veneers and approval up to 2” behind combustible veneers.
Can DuPont™ Thermax™ Brand Insulation be left exposed to the building interior?
Thermax™ Brand Insulation products can be left exposed to the building interior (i.e., without a thermal barrier such as 1/2 inch gypsum wallboard) in specific non-rated ceiling assemblies or non-rated construction in commercial, industrial and agricultural buildings. Thermax™ Brand Insulation products cannot be left exposed to exterior conditions.

The use of Thermax™ Brand Insulation exposed to the building interior is documented with a Code Compliance Research Report (CCRR-0440).

NOTE: Thermax™ cannot be used as a duct work or plenum insulation- it does not meet the IBC /IMC for flame spread of 25 or less and smoke developed of 50 or less

What are the ASTM C1289 classifications for DuPont polyisocyanurate products ?
The ASTM C1289 classifications for DuPontpolyisocyanurate products are as shown below:
ASTM C1289 Types Products
Type I, Class I Tuff-R™ Insulation (< 1')
Type I, Class 2 Tuff-R™ Insulation (≥ 1')
Type I, Class 2 Thermax™ Basic NH Insulation
Type I, Class 2 Thermax™ Heavy Duty Insulation
Type I, Class 2 Thermax™ Light Duty NH Insulation
Type I, Class 2 Thermax™ XARMOR™ (ci) Exterior Insulation
Type I, Class 2 Thermax™ Metal Building Board NH Insulation
Type I, Class 2 Thermax™ White Finish NH Insulation

Type1 - Faced with aluminum foil on both major surfaces of the core foam. Class 1 - Non-reinforced core foam. Class 2 - Glass fiber reinforced core foam. Dimensional stability will be greater than Class 1 when fastened properly. ASTM C1289 Class 2 exceeds Class 1 requirements.

 
 
 
 
 
 

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