Do you have roof leaks? Have you seen brown spots on ceiling or walls? This is probably your flat roof leaking. Do you know what to look for on your roof ? There are several types of flat roofs. There is a rubber roof called E.P.D.M. (ethylene propylene diene monomer (M-class) rubber) . Then there are Modified Bitumen roofs, Tar and Gravel roofs , PVC roofs. The best roof in our opinion is the newest TPO. roof systems. Unlike other roof system TPO is White ,Clean, and easy to repair.