Canada and a growing number of U.S. states have committed to eliminating use of high-Global Warming Potential (GWP) HFC blowing agents, an important contributor to climate change. Owens Corning celebrates this important step by introducing FOAMULAR® NGX™ (Next Generation Extruded) insulation, produced with a proprietary blowing agent that goes well beyond most regulations. The new formulation and production process meets or exceeds new, more stringent regulatory standards without sacrificing product performance. FOAMULAR® NGX™ will be available beginning January 1, 2021, across all of the US and Canada.


FOAMULAR® NGX™ Insulation

Owens Corning® FOAMULAR® NGX™ insulation offers all the performance and ease-of-use you expect from Owens Corning® FOAMULAR® insulation with industry-leading sustainability:

  • Completely eliminates use of HFC 134a
  • Delivers a 90% reduction in global warming potential (GWP)1
  • Excellent energy efficiency in the form of a high R-5 per inch
  • Extremely low water absorption potential, delivering superior R-value retention in the presence of water
  • A wide range of compressive strengths – up to 100 psi – to handle heavy loads
  • The only XPS with a limited lifetime warranty that guarantees a minimum 90% of R-value for the life of the product


The Science and Strength of Sustainability

Climate change. What does the data say? The last three decades have been the hottest ever recorded on earth.2 Carbon dioxide in the atmosphere is now more than 400 parts per million, contributing to the rise in global temperatures.3,4 Today, about 3 of every 10 carbon dioxide molecules in the atmosphere are the result of human activity.3,4

But taking intentional action demands change. According to the EPA, greenhouse gas emissions in the U.S. have fallen by 10% over the last 15 years,5 a trend that’s expected to grow as more states and countries adopt stricter emissions regulations. Reducing the use of hydrofluorocarbon (HFC) blowing agents, is one way to begin clearing the air across our world. Quite simply, the choice of materials matters when it comes to protecting our planet.

Ten Years to Better Sustainability

The introduction of FOAMULAR® NGX (Next Generation Extruded) insulation is part of the Owens Corning commitment to improving sustainability by 2030 through:

  • Expanding our product handprint: Increasing the positive impacts that our products have on the world.
  • Reducing our environmental footprint:  Limiting the negative impact our operations have on the environment.
  • Increasing our social handprint: Ensuring that people are safe and live with health, happiness and human dignity.

Regulatory Changes

Starting next year Canada and certain states within the US will enact new environmental regulations to lower the GWP levels of blowing agent formulations. See below map or Download the PDF to see the effective dates of when regulatory changes will roll out in North America, as well as proposed effective dates for those states where the regulations have yet to be finalized.

*To be updated as regulations are finalized.

Final Laws and Regulations in Place (Green)

  • Effective 1/1/2021
    • Canada
    • California
    • Washington
    • Colorado
    • New York
    • New Jersey
  • Effective 1/1/2022
    • Vermont
    • Hawaii

Proposed Laws and Regulations (Dark Gray)

  • Proposed Effective Date of 1/1/2021
    • Delaware
    • Massachusetts
  • Proposed Effective Date of 7/1/2021
    • Maryland
  • Proposed Effective Date TBD
    • Virginia
    • Maine


Owens Corning Introduces FOAMULAR® NGX™ Insulation
Owens Corning introduces FOAMULAR® NGX™ Insulation with an innovative blowing agent blend that delivers 90% reduction in Global Warming Potential.
Read More >

Green Building News
Owens Corning Vice President and Chief Sustainability Officer, Frank O’Brien-Bernini discusses Owens Corning’s leadership position regarding the regulatory changes for XPS Insulation set to take effect on January 1, 2021.
Read More >


1 Compared to FOAMULAR® blowing agent formulation.

2 IPCC, 2014: Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland, 151 pp.

3 Buis, A. October 9, 2019. “The Atmosphere: Getting a Handle on Carbon Dioxide.” NASA.

4 Nieman, A. May 22, 2013. “What does 400 ppm look like?” Carbon Visuals.

5 U.S. Environmental Protection Agency. April 13, 2020. “Latest Inventory of U.S. Greenhouse Gas Emissions and Sinks Shows Long-Term Reductions, with Annual Variation.”