How Long Has Spray Foam Insulation Been Around?

Spray Foam Insulation has been around for more than 30 years.  Its primary use was in the food storage industry.  Original Spray Foam Insulations contained urea formaldehyde, and used CFCs as blowing agents.  Spray Foam Insulation today does not contain urea and spray foam uses a Zero Ozone Depletion Substance (Zero ODS) blowing agent.