Seamless sprayed polyurethane foam forms an insulated roofing system without seams that can allow water and air into the building. It eliminates flashing leaks and ponding water issues. SPF has the highest R-value of any insulation, making it highly waterproof and watertight. It is also lightweight, reduces thermal shock, is versatile for new and replacement roofs, and is flexible and easy to apply and maintain. Alpine Roofing uses high quality foams and coatings from proven manufacturers to provide quality roofing services for over 70 years.