If your state requires a license to be a roofing contractor make sure they have one. If you are not sure if your state requires one, visit your state governments website and search for housing and construction and licenses. If your state does not require a license then check to see if they are affiliated with any professional roofing societies such as the National Roofing Contractors Association (NRCA). Most well respected roofers will be affiliated with some type of professional organization.
Ask if their business carries general liability insurance. And then ask how much. I would not feel very comfortable about any roofing company that carried less than a $250,000 general liability coverage. Then ask to see their proof of insurance. And be sure to ask if they have workman’s compensation insurance. If they don’t and something happens to them on your property, you could be sued. Any beating around the bush here should be a major red flag for you to move on to the next contractor.
Find out how long they will warranty their work. The materials should come with a standard 1 year warranty and most businesses will warranty their labor just the same. Really good contractors will warranty their work beyond the standard 1 year parts and labor warranty.
You should definitely ask the contractor what jobs they have completed in the past. Additionally, ask for a list of references that you can call to inquire about their job performance. A professional contractor will have no problem providing this information to you.
Remember to always get at least 3 bids from different contractors. Any bids that are extremely too high or too low should be a definite flag. And never underestimate your gut. If something just don’t feel right…it probably isn’t. You should feel very comfortable with the contractor who is installing your valuable investment. Your contractor should make you feel very secure about the step you are about to take with them. If they don’t, then they are not the contractor for you and you need to select another.