1. 
   Urea-Formaldehyde Foam Insulation
   A material once used to conserve energy by sealing crawl spaces, attics, etc.; no longer used because emissions were found to be a health hazard.
   Found op http://www.epa.gov/OCEPAterms/
   
   
2. 
   urea-formaldehyde foam insulation
   Urea-formaldehyde (UF) foam was used in homes during the 1970s and early 1980s. However, after many health-related court cases due to improper installation practices, UF foam is no longer available for residential use and has been discredited for its formaldehyde emissions and shrinkage. It is now u...
   Found op http://www.daviddarling.info/encyclopedia/U/AE_urea-formaldehyde_foam_insul
   
   

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