In what year was the use of Urea Formaldehyde Foam Insulation (UFFI) discontinued?

The use of Urea Formaldehyde Foam Insulation (UFFI) was discontinued primarily due to health concerns associated with formaldehyde emissions. By 1979, various studies had raised alarms about the potential for formaldehyde to cause respiratory issues, irritation, and other health problems. This prompted regulatory action and a move towards safer insulation materials, solidifying 1979 as the pivotal year when UFFI was effectively banned in new installations in many places, including Massachusetts. This timeline reflects the increasing awareness and regulation of materials that could pose health risks in residential environments, marking a significant shift in construction practices concerning insulation safety.