Open Cell is a two-component, light-density, one-to-one-by-volume spray polyurethane foam. No Ignition Barrier Coating is required when used in assembly-specific attic applications. To produce Open Cell requires the use of an “A” component (ISO) and a blended “B” component (RESIN), which contains ZERO ozone-depleting blowing agents, catalysts, polyols, and fire-retarding materials. Open Cell is an insulation system designed for use in residential applications. Use it in lieu of more traditional forms of insulating materials such as fiberglass, cellulose, or other loose fill products. Typical areas where Open Cell is applied are exterior walls, vented attics, unvented attic assemblies, and between floors.