Formaldehyde and Indoor Air

Formaldehyde is found in most homes in the U.S., usually at levels that cause little concern, but acute high levels, or long-term exposure of moderate levels of formaldehyde in indoor air have been attributed to a variety of health risks from asthma like respiratory irritation, flu like symptoms, to forms of cancer. A recent example of this was the contamination of the air in the FEMA trailers after Hurricane Katrina. Formaldehyde traditionally has been used as a preservative and disinfectant. It is now used in the production of numerous materials, including glues and adhesives which are used to hold together wood products such as particle board and MDF (medium-density fiberboard). These materials are often used to make cabinets, shelves, furniture, moldings, and countertop substrates. These materials if not encapsulated in a laminate or other covering may release significant amounts of formaldehyde into the air in your home. Many other building materials, including fiberglass insulation are also produced with formaldehyde. These products are often of a lesser quality, but not always. As a response to many of the health concerns, manufacturers are now producing materials and products that are low-emission or “formaldehyde free.” When having any home improvement done that may utilize these types of materials, inquire about the potential formaldehyde exposure risk. Often a better grade of material will be a worthwhile health option.  To learn more about formaldehyde and how to limit your indoor exposure, you may wish to read this CDC and this Canadian article.