First used in building materials, particularly insulation, in the 1970s. Gases leak out of the' urea-formaldehyde' foam insulation (UFFI) as it hardens and become trapped in the interior of a building. Once used to conserve energy by sealing crawl spaces and attics, it is longer used because emissions were found to be a health hazard. (See formaldehyde).
Barry Goldsmith
| APA | Barry Goldsmith. (2010). urea-formaldehyde. Retrieved September 21, 2026, from http://smartdefine.org/urea-formaldehyde/definitions/1166052 |
| Chicago | Barry Goldsmith. 2010. "urea-formaldehyde" http://smartdefine.org/urea-formaldehyde/definitions/1166052 (accessed September 21, 2026). |
| Harvard | Barry Goldsmith 2010, urea-formaldehyde, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/urea-formaldehyde/definitions/1166052>. |
| MLA | Barry Goldsmith. "urea-formaldehyde" 21 October 2010. Web. 21 September 2026. <http://smartdefine.org/urea-formaldehyde/definitions/1166052> |