Mr. Bishop started his roofing career in 1986. He has worked for big companies and small, residential and commercial, hot climates and cold, installing and/or repairing every major roofing system. John and his wife Martha have a small company in Southwest Florida, specializing in roof repairs. He is also the author of "Roofing Secrets: How to Avoid Leaks and Save Thousands of Dollars!" For details go to: www.roofingsecrets.com