Currently Reading

Regulations on hydrofluorocarbons reduce roof insulation options

Codes and Standards

Regulations on hydrofluorocarbons reduce roof insulation options

Canada, some U.S. states ban HFC blowing agents used in closed-cell foam.

By Peter Fabris, Contributing Editor | July 12, 2021

Early this year, Canada and several U.S. states enacted new regulations eliminating the use of blowing agents containing hydrofluorocarbons with high global warming potential.

The regulations apply to extruded polystyrene insulation and other closed-cell foam insulations that use HFC blowing agents. This material is used in low-slope roof systems to support thermal performance, provide moisture control, and deliver compressive strength.

The new HFC regulations are being implemented on a state-by-state basis and are currently effective in California, Colorado, New Jersey, New York, Vermont, and Washington. Delaware, Maryland, and Massachusetts have finalized similar regulations.

The regulations generally prevent the sale of non-complying products into a state and allow a grace period for sales of existing materials after which non-compliant products cannot be sold. The new regulations have hastened the pace of innovation for manufacturers to develop blowing agents with less global warming potential.

Related Stories

Codes and Standards | Sep 22, 2021

Group proposes Carbon Use Intensity metric for new buildings

Plan would track embedded carbon on projects.

Codes and Standards | Sep 22, 2021

Cities need to step up flood mitigation efforts to save lives

Recent storms highlight climate change dangers.

Codes and Standards | Sep 21, 2021

Steps to improve ventilation for Covid can combat colds and flu

New look at airborne disease spread shows time viruses linger in air may have been underestimated.

Codes and Standards | Sep 15, 2021

USGBC will change leaders, conduct strategic review

Aims to ensure organization is ‘well positioned to scale its work in the post-pandemic world’.

Codes and Standards | Sep 15, 2021

LEED-certified offices earn higher rents than non-sustainable properties

Are also more resilient to dips in real estate market.

Codes and Standards | Sep 7, 2021

Boston turns to developer fees to fund flood protection infrastructure

Assessments on commercial properties will help build seawall and other protective measures.

Codes and Standards | Sep 3, 2021

Low-cost methods can have substantial impact on reducing embodied carbon

Whole-building design, material substitution, and specification strategies can slash carbon by up to 46%.

Codes and Standards | Sep 2, 2021

Case for power resiliency in buildings grows with more disaster and outages

Essential businesses like data centers, hospitals are first adopters of new storage systems.

Codes and Standards | Aug 31, 2021

UK industry group wants mandatory whole-life carbon assessments of buildings

Aims to address hidden emissions embedded in supply chains.

Magazine Subscription

Get our Newsletters

Each day, our editors assemble the latest breaking industry news, hottest trends, and most relevant research, delivered to your inbox.


Follow BD+C: