10 Ways to Tell Your Roof Needs to be Replaced

http://www.sheknows.com/home-and-gardening/articles/7729/do-you-need-a-new-roof-ways-to-tell

RoofHelp.com - The number one place on the internet for roof help.
http://www.roofhelp.com

Top 10 Roofing Safety Tips
http://www.superroofingpros.com/learn/top-10-roofing-safety-tips

Roofing Cleaning Tips, Your Options & What to Avoid
http://www.everyday-wisdom.com/roof-cleaning.html

Safety Tips When Working On A Roof
http://ezinearticles.com/?Safety-Tips-While-Working-on-a-Roof&id=5231317

Roofing Regulations In Canada
http://www.pima.org/BulletinFiles/tb111c_clr.pdf