A VERY good episode on what you should be looking for when hiring a roofer. Too many people are ripped off, check BBB! Davidoff Roofing has had an A+ rating since the company began in 1983. A roof is an expensive investment; make sure you are getting what you sign for!
http://www.cbc.ca/player/Shows/Shows/Marketplace/Season+38/ID/1781395915/