IGNITION BARRIER

A building code permitted protective covering applied over foam plastic insulations, including SPF, in attics and crawlspaces to increase the time it takes for the foam plastic to become involved in a fire. Ignition barriers do not provide as much fire protection as THERMAL BARRIERS (see also). The building code restricts the use of ignition barriers to attics and crawlspaces of limited access (check the local building code for exact requirements).