Contact Us
Consult with an Expert
Contact Us
Consult with an Expert
  • Home
  • DuPont™ Styrofoam™ Brand Highload 40 XPS Insulation

DuPont™ Styrofoam™ Brand Highload 40 XPS Insulation

Subfloor Thermal Insulation for Low-Temperature Applications<br>U.S. HFC Regulation Compliant Formulation

styrofoam-brand-highload-40-product-logo-image1.jpg
styrofoam-brand-highload-40-product-logo-image2.jpg
styrofoam-brand-highload-40-product-logo-image3.jpg

DuPont™ Styrofoam™ Brand Highload 40 XPS Insulation

Subfloor Thermal Insulation for Low-Temperature Applications<br>U.S. HFC Regulation Compliant Formulation

<br><b>DuPont™ Styrofoam™ Brand Highload 40 Extruded Polystyrene (XPS) Insulation</b> is a closed-cell foam insulation designed for demanding applications such as low-temperature (freezer floor) applications, highways, airport runways, bridge abutments, parking decks, utility lines, and ice rinks. With a compressive strength of 40 psi (275 kPa), it offers exceptional moisture resistance and R-value retention. <br><br><b>Styrofoam™ Brand Highload Insulation</b> products are engineered to resist compressive creep and fatigue, ensuring sustained compressive strength over time. Like all Styrofoam™ Brand insulation products, <b>Highload 40 XPS Insulation</b> is known for its durability, versatility, and reusability, making it a preferred choice for a wide range of high-load applications.
 
 
 
 
 
 

Features & Benefits 

 
 
 

default-features-benifits.png
Highly Moisture Resistant
  • Superior resistance to water absorption, water vapor transmission and freeze thaw cycling
default-features-benifits.png
Long-Term Compressive Strength
  • Resist compressive creep and fatigue
 
 
 

Specifications

 
 
 

Standard Sizes

Thickness Width Length R-Value Edge Treatment
1 in. 2 ft. 8 ft. 5 Butt Edge
2 in. 2 ft. 8 ft. 10 Butt Edge
2 in. 4 ft. 8 ft. 10 Square Edge
3 in. 2 ft. 8 ft. 15 Butt Edge
3 in. 4 ft. 8 ft. 15 Square Edge
3 1/2 in. 4 ft. 8 ft. 17.5 Square Edge
4 in. 4 ft. 8 ft. 20 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>Styrofoam™ Brand Highload 40 XPS 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 Characteristics Flame Spread ≤ 25
Smoke Developed ≤ 450
THERMAL
ASTM C518 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus Thermal Resistance per inch, @ 75°F mean temp.1 5.0 ft2
•h•°F/Btu, R-value, min.
ASTM D696 Standard Test Method for Coefficient of Linear Thermal Expansion of Plastics Between −30°C and + 30°C with a Vitreous Silica Dilatometer Coefficient of Linear Thermal Expansion 3.5 x 10-5
in/in•°F
ASTM D2126 Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging Change in Dimensions 2.0 % change, max.
STRENGTH
ASTM D1621 Standard Test Method for Compressive Properties of Rigid Cellular Plastics Compressive Strength2 40 psi, min.
ASTM D1622 Standard Test Method for Compressive Properties of Rigid Cellular Plastics Compressive Modulus (typical) 1,400 psi
ASTM C203 Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation Flexural Strength 60 psi, min
WATER
ASTM C272 Standard Test Method for Water Absorption of Core Materials for Sandwich Construction Water Absorption 0.1 % by volume, max.
ASTM E96 Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials Water Vapor Permeance3 1.0 perm, max.

1Values are consistent with the criteria of ASTM C578 and the requirements of the FTC R-value rule (16 CFR Part 460). R means resistance to heat flow. The higher the R-value, the greater the insulating power.

2Vertical compressive strength is measured at 5 percent deformation or at yield, whichever occurs first. Since Styrofoam insulations are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3:1 is suggested. For dynamic loads, call 1-866-583-2583 for safety factor recommendation.

3Based on 1” thickness.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

FAQ

Can DuPont™ Styrofoam™ Brand Extruded Polystyrene Foam Insulation be used in railway bed applications?
Yes. Railroad facilities such as track, at grade crossings, switching yards, etc. are at risk of frost damage if the underlying soils are susceptible to frost heave and spring breakup. Engineers have found DuPont™ Styrofoam™ Brand Highload 40, 60 and 100 Extruded Polystyrene XPS Insulation, when placed beneath these railroad facilities, reduces the potential for damaging effects of frost heave or spring thaw weakening.

The thickness and width of the DuPont™ Styrofoam™ Brand Extruded Polystyrene XPS Insulation used for a particular roadway can be determined based on figures and computer models provided by DuPontTM. The variables needed are average frost penetration in feet/m, freezing degree days for a particular location, roadway cross section materials and thickness, soil type, etc. If you have a particular situation using DuPont™ Styrofoam™ Brand Highload XPS Insulation, please call 1-833-338-7668 for calculations.

Can DuPont™ Styrofoam™ Brand Extruded Polystyrene Foam Insulation be used in roadway applications?
Yes. Whenever roadway underlying soils are susceptible to frost, roadways will suffer frost heaving and spring breakup. The damaging effects of this frost action play havoc with traffic on major arteries as well as posing a monumental expense for repair year in and year out.

DuPont™ Styrofoam™ Brand Highload 40, 60 and 100 Extruded Polystyrene XPS Insulation has been successfully used to reduce frost and thaw damage on countless roadways in Canada, the United States, Japan and throughout Europe. When properly installed between the subsoil and gravel base. Styrofoam™ Brand Highload Insulation products reduce heat loss from the frost susceptible sub-grade so that frost heaving and spring breakup are held at bay.

The thickness and width of the Styrofoam™ Brand XPS Insulation used for a particular roadway can be determined based on figures and computer models provided by DuPontTM. The variables needed are average frost penetration in feet/m, freezing degree days for a particular location, roadway cross section materials and thickness, soil type, etc. If you have a particular situation using Styrofoam™ Brand Highload Insulation, please call 1-833-338-7668 for calculations.

What is the compressive modulus ofDuPont™ Styrofoam™ Brand Extruded Polystyrene Foam Insulation?
Compressive modulus is a measure of the force required to produce a given deflection as measured in the fraction of deflection of the original sample’s thickness. Products with a higher compressive modulus are “stiffer” and require more force to produce a deflection in the product.

A table of typical compressive modulus values for various grades of Styrofoam™ Brand Extruded Polystyrene Foam Insulation made in Canada can be found below:

Product Compressive Modulus
Styrofoam™ Highload 40 XPS Insulation 1,400 psi (9,650 kPa)
Styrofoam™ Highload 60 XPS Insulation 2,200 psi (15,170 kPa)
Styrofoam™ Highload 100 XPS Insulation 3,700 psi (25,510 kPa)

Which DuPont Performance Building Solutions products can be used in lightweight fill applications?
DuPont™ Styrofoam™ Brand Square Edge XPS Insulation, DuPont™ Styrofoam™ Brand Highload 40, 60 and 100 Extruded Polystyrene (XPS) Insulations are recommended for use in lightweight applications. Care must be taken to select the appropriate insulation from this list.
What are the ASTM C578 classifications for DuPont™ Styrofoam™ Brand Extruded Polystyrene Foam Insulation products?
The ASTM C578 classifications for DuPont™ Styrofoam™ Brand Extruded Polystyrene (XPS) Insulation products are as shown below:
ASTM C578 Types DuPont Products
Type X

Styrofoam™ Brand Residential Sheathing Styrofoam™ Brand Cavitymate™ XPS Insulation Styrofoam™ Brand Panel Core 20

Type IV

Styrofoam™ Brand Tongue and Groove Insulation Styrofoam™ Brand Square Edge XPS Insulation Styrofoam™ Brand Scoreboard XPS Insulation Styrofoam™ Brand Deckmate™ Plus XPS Insulation Styrofoam™ Brand Deckmate™ Plus FA XPS Insulation Styrofoam™ Brand Cavitymate™ Plus XPS Insulation Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation Styrofoam™ Brand Panel Core 30 Freezermate™ XPSInsulation Styrofoam™ Brand Ag BoardXPS Insulation

Type VI

Styrofoam™ Brand Highload 40 XPS Insulation Styrofoam™ Brand Panel Core 40 XPS Insulation Styrofoam™ Brand Roofmate™ XPS Insulation

Type VII

Styrofoam™ Brand Highload 60 XPS Insulation Styrofoam™ Brand Plazamate™ XPS Insulation

Type V

Styrofoam™ Brand Highload 100 XPS Insulation

What are the ballast requirements for perimeter areas or penetrations in Protected Membrane Roof (PMR) assemblies?
Certain areas of the protected membrane roof (PMR) insulation require additional ballast to overcome high wind loads and to restrain the foam from floating during heavy rain storms. This ensures that individual stones cannot migrate to below the foam and abrade the membrane. Areas needing such additional ballasting are:

Perimeter Edge of Insulation: which is an 8-foot-wide swath running along the perimeter edge of the roof insulation (and which includes any insulation adjacent to higher walls).

Penetrations Through Insulation: which are four-foot-wide swaths running around any roof insulation penetrations which exceed 4 feet in any direction, such as skylights, expansion joints, equipment pads, etc.

Corners: where arrays of concrete pavers are required in higher wind zones or with low parapet walls. These requirements are consistent with both the ANSI/SPRI RP-4 Ballast Design Guide (the procedure required by the International Building Code) and Factory Mutual requirements (Factory Mutual Property Loss Prevention Data Sheet 1-29 Page 18).

For more information, download Tech Solutions 508.3: Ballast Design Guide for PMR Systems (43-d100241). Call 1-833-338-7668 for ballast design information in Canada

What DuPont products are ENERGY STAR qualified?
The following DuPont™ Styrofoam™ Brand Extruded Polystyrene XPS Insulation products have obtained ENERGY STAR certification:  Scoreboard, Square Edge, Tongue & Groove, Highload 40, Highload 60, and Residential Sheathing. Look for the ENERGY STAR logo on the product unit label. For more information, please visit: ENERGY STAR.
Can DuPont™ Styrofoam™ Brand Highload products be tapered?
Yes. DuPont™ Styrofoam™ Brand Highload products(40, 60 and 100) can be tapered in a manner similar to DuPont™ Styrofoam™ Brand Deckmate™ Plus FA Extruded Polystyrene XPS Insulation. The fabricator may need to adjust the cutting (tapering) speed to account for the higher density of these products.
 
 
 
 
 
 

How can we help you?

Contact Us Request a quote