During the energy crisis of the early 1970s, there was a drive to conserve energy in every segment of society. Citizens were encouraged to insulate their homes and tighten them up to avoid loss of energy. One of the products to emerge from this crisis was urea formaldehyde foam insulation. (Urea formaldehyde is a well-known agent for preserving school biology specimens.) This construction material became the focus of attention in the scientific community after many complaints from homeowners were lodged against contractors. In hot and humid conditions, the gas is readily released into the atmosphere and may produce a carcinogenic effect in a home, school, or work environment. This article addresses issues having to do with insulation of homes in Canada and the United States, and it suggests procedures within the school health program to combat any harmful effects. Various research projects are discussed along with policy positions of appropriate government agencies in the United States and Canada. (LL)