Urea formaldehyde foam insulation (UFFI) was developed in Europe during the 1950s. It is a low density foam that is pumped into wall cavities. It is made of a mixture of urea and formaldehyde resin, compressed air and a foaming agent. It looks and feels like shaving cream until it hardens and can be white, cream or blue in colour.
It was approved for use in Canada in 1977 by the Canada Mortgage and Housing Corporation. Soon after, the Canadian government offered cash incentives to homeowners to insulate their homes with UFFI. This new insulation was affordable and was excellent for reaching hard-to-reach areas. By 1980, approximately 100,000 homes were insulated with UFFI in Canada.