The BASF SPRAYTITE system we use is a sprayed application of a liquid, two-component, non-fibrous product that includes and isocyanate(A-side Component) and a resin(B-side Component). It is not a pre-formed insulation. Instead, it is field applied to provide a custom fit insulation product which also provides air sealing benefits. During application, there is a chain reaction between the two components that creates a bond to the substrate as it foams up. It dries, cures, and hardens very quickly. This product should always be installed by a trained contractor.