John has over 16 years of spray experience, mostly with large commercial roofs. John has sprayed a variety of roofs and insulating projects, managed foam crews, ran the service division of a foam roofing company, and now teaches students at the Foam School. John is a natural teacher because he loves foam and is very enthusiastic about sharing his knowledge. As a matter of fact, his knowledge of foam has taken him around the country where he has taught students about their equipment as well as application techniques.