FROTH-PAK™ Foam Insulation is a two-component, quick-cure polyurethane foam that fills cavities, cracks, penetrations, and expansion joints. Unlike one-component foam, it is a chemically cured foam, significantly reducing curing time. FROTH-PAK™ Foam Insulation dispenses, expands and becomes tack-free in seconds. The product will skin over in 30-40 seconds and will be completely cured in minutes.