This video shows how to install a rain diverter on a shingle roof. We fabricate quality rain diverters in many colors. Our standard length is 5 FT long, 7" under the shingle, and 2.5" tall on the front to handle the heaviest rain. Custom sizes are no problem. Just send us a message through our website www.metalroofingscrews.com. You can also text or call our customer servive line @ 1-866-773-1177. Helping our customers get the job done is what we are in business to do.