The sealing and insulating layer of SPF is spray applied. The foam flows into and fills any cracks and surface irregularities resulting in a fully adhered, seamless monolithic blanket of thermal protection.

Unlike other roofing materials, polyurethane foam may be applied directly over BUR/Gravel, Stucco, Concrete, Plywood, or Metal roofing and normally does can be applied over the old roof without the expense of costly old roof removal.