Blowing agents are a critical component to spray foam. One of the big changes recently is the transition from HFC (Hydrofluorocarbon) blowing agents to HFO blowing agents (Hydrofluoroolefin). HFC’s were initially developed to replace ozone-depleting substances (ODS) that were used in refrigeration, air conditioning, aerosols and spray foam. Over the years, chemists have created new formulations and ways to produce quality spray foams with even less impact on the environment.
In December of 2020, the American Innovation and Manufacturing Act (AIM) passed, ordering manufacturers to start phasing down the consumption and production of HFC’s by 85% over the next 15 years. Several states already have regulations in place restricting the use of HFC’s.
Many contractors, in states where there are no HFC regulations in place, now prefer the new HFO products thanks to the superior performance and increased yields they offer. In fact, some of IDI’s HFO products have higher R-Values than their HFC counterparts and can be sprayed in thicker passes, allowing the installer to complete more projects in one application.