High Yield is a two-component, light-density, one-to-one-by-volume spray-applied polyurethane foam. To produce High Yield 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. High Yield is an insulation system designed for use in residential, commercial, and industrial applications. Use it in lieu of more traditional forms of insulating materials such as fiberglass, cellulose, or other loose-fill products. Typical areas where spray polyurethane foam is applied are exterior walls, interior walls, vented attics, unvented attic assemblies between floors, and ceilings.