Natural-Therm® 2.0 IBW/IBS is a two-component spray-applied rigid polyurethane foam insulation system specifically formulated using a zero Ozone Depletion Potential (ODP) blowing agent. Natural-Therm® 2.0 IBW/IBS provides thermal insulation for the interior or exterior of the building while acting as an air barrier to improve the performance of the building envelope.