DuPont™ Styrofoam™ Brand ST-100 Series XPS Insulation meets HFC compliance in select U.S. states.

Our color is changing.
Our standard is not.


Beyond Blue

NEW Styrofoam™ Brand ST-100 Series XPS

The ST-100 Series represents a technology shift that further reduces greenhouse gas (GHG) emissions*, meets HFC regulations and supports DuPont’s 2030 Sustainability Goals. This game-changing formulation is a new grey color instead of the traditional blue — so you’ll know it when you see it.
View the compliance map →
* Lower GHG by material design and operations.

The newest members of the pack

Introducing DuPont™ Styrofoam™ ST-100 Series XPS Insulation
The Styrofoam™ Brand ST-100 Series has been formulated to meet sustainability goals for climate action regulations in U.S. states. But some things remain unchanged: these new XPS products offer the same high performance and long-term value under the same Styrofoam™ product names with ST-100 descriptor – so there’s no need to change your specifications.

For additional details on compliance, refer to our U.S. compliance map and ICC-ESR 4755 code report.

View the compliance map and code report →


Styrofoam™ Brand XPS ST-100 Series
(below-grade, above-grade walls)

  • Styrofoam™ Brand Scoreboard™ ST-100 XPS Insulation
  • Styrofoam™ Brand Square Edge ST-100 XPS Insulation
  • Styrofoam™ Brand UtilityFit™ ST-100 XPS Insulation
  • Styrofoam™ Brand Tongue and Groove ST-100 XPS Insulation

Styrofoam™ Brand XPS ST-100 Series

  • Styrofoam™ Brand Scoreboard™ ST-100 XPS Insulation
  • Styrofoam™ Brand Square Edge ST-100 XPS Insulation
  • Styrofoam™ Brand Highload 40 ST-100 XPS Insulation
  • Styrofoam™ Brand Highload 60 ST-100 XPS Insulation
  • Styrofoam™ Brand Highload 100 ST-100 XPS Insulation

Additional product lines and applications coming soon.
Complete Styrofoam™ Brand ST-100 product lines and IRC and IBC building code application approvals will be included with updated ICC-ESR 4755 in the coming months.


We're here to help

Let’s talk about what Styrofoam™ Brand ST-100 Series XPS can do for your next project.

Contact us →


Meeting or exceeding
code regulations

  • Meets ASTM C578 Types IV, VI, VII and X (see product information)
  • Compliant with North American and international building codes/standards
  • Contributes to USGBC LEED V4 points in multiple categories, including EA Credit 1 for Optimized Energy Performance (1-19 points), MRc3 Sourcing of Raw Materials, MRc4 - Material Ingredients, and EQc2, Low Emitting Materials

A strong
sustainability profile

  • Low global warming potential (GWP)
  • Produced using Renewable Energy
  • Certified recycled content
  • Low VOC (volatile organic compounds) compliance (California Title 24 standard)
  • Goal of reducing our GHG emissions by 2030

Building for
the future

  • Installed in 20+ million buildings worldwide
  • Insulates 20+ billion ft²
  • Saves the U.S. $10+ billion in energy costs annually
  • Zero-ozone depletion formula
  • Enabling a Circular Economy with reuse
  • Helps achieve high performance, durable buildings for thriving communities

A path to positive change

Styrofoam™ Brand ST-100 Series meets HFC regulations


We know that sustainability is more than just how our products are produced. It’s also about how they perform. Without compromising on quality, durability or thermal performance, we are introducing a new Styrofoam™ ST-100 Series XPS formulation that reduces greenhouse gas emissions and helps meet the DuPont 2030 Sustainability Goals. We’re delivering a product that has been evaluated by third-party certifications to meet or exceed standards on both sustainability and performance.


Move forward with grey Styrofoam™ Brand ST-100 Series XPS

Our history is rooted in innovation and Styrofoam™ Brand XPS is the industry leader – allowing us to deliver better, more-sustainable technology for modern building needs. Styrofoam™ ST-100 Series XPS Insulation is another example of our long-term commitment to global sustainability and environmentally compliant building solutions.


The Styrofoam™ Brand ST-100 series, under the same current product names that you know, will be available for all the existing Styrofoam™ product lines: for example, Styrofoam™ Square Edge is available as Styrofoam™ Square Edge ST-100 XPS insulation. The change is easy to identify; we are modifying the color from the traditional blue to the new grey.1


Above and beyond ensuring environmental compliance, we’re continuing to advance our 2030 Sustainability Goals and invest in global efforts and technology innovations to help you design and build energy-efficient, resilient and durable structures in this rapidly changing world.


New color.
Same value.


When you’re protecting all six sides of the building envelope, the Styrofoam™ Brand product family has long been the choice for quality, consistent performance and energy efficiency. The new Styrofoam™ Brand ST-100 Series XPS formulation maintains the high levels of performance you’ve come to expect from the Styrofoam™ Brand.


Performance is not a color

Styrofoam™ Brand ST-100 Series XPS delivers the same R-value² – R-5 per inch thickness – for long-term thermal performance. The grey color lets you know it was made with the reduced GHG formulation.


With the same thermal performance, moisture resistance, durability and ease of use, Styrofoam™ Brand ST-100 Series XPS Insulation – along with our complete building envelope solutions – delivers protection that’s a sure fit for all six sides.


Styrofoam™ Brand ST-100 Series products are available now, in select U.S. states, with plans to expand the product offering soon. Refer to the Styrofoam™ Brand XPS Code Report ICC-ESR 2142 for details.


1 Styrofoam™ Brand Cavitymate™ Ultra Insulation, with patented carbon black technology, will continue to be produced in dark grey, delivering long-term insulating performance of R-5.6 per inch in wet cavity wall environments.

2 R means resistance to heat flow. The higher the R-value, the greater the insulating power.


Styrofoam™ Brand ST-100 Series XPS Resources


Safe Jobsite Handling Video

Product information sheet


Styrofoam™ Brand ST-100 product information sheet

Styrofoam™ Brand Product Brochure

Download PDF

Styrofoam™ Brand product brochure

Styrofoam™ Brand ST-100 Series XPS EPD

EPD – Coming soon!

Styrofoam™ Brand ST-100 Series XPS EPD

Documentation for LCA & EDP Services

Coming soon!

Physical Property Equivalency Letter


Physical Property Equivalency Letter

Safe Handling Document

Coming soon!

Fact Sheet

Coming soon!


Safe Handling Graphic

Coming soon!


Download PDF


(5 MB .zip)

(coming soon!)


See the difference

New Styrofoam™ Brand ST-100 Series XPS – Product Differentiation

 New grey color    ST-100 nomenclature    Compliance information
Current product

Current Product



New ST-100 Product

New ST-100 Product


Any questions?

The Styrofoam™ Brand was the original, creating the product segment. Rooted in innovation, we’re excited to deliver a more-sustainable solution. Let’s start a conversion and discuss your next project.