What Is Urea Formaldehyde Foam Insulation?
What Is Urea Formaldehyde Foam Insulation? Urea formaldehyde foam insulation (UFFI) is a thermal insulation product used mostly during the 1970s and early 1980s. … It could be sprayed into building cavities through small holes, an improvement over the conventional process that required walls be removed to add insulation. Is urea formaldehyde insulation still used?