Traditional insulations leave gaps and spaces, where air infiltration becomes a major source of energy loss. Spray foam seals spaces completely, creating an effective vapor barrier that prevents air leakage and the heat transfer that goes with it. For both commercial and residential applications, spray foam provides the best air sealing proporties and highest R-Value per inch! Spray foam is a chemical product created by two materials, isocyanate and polyol resin, which react when mixed with each other and expand up to 30-60 times its liquid volume after it is sprayed in place. This expansion makes it useful as a specialty packing material which forms to the shape of the product being packaged and produces a high thermal insulating value with virtually no air infiltration.