Insurance. Look for a contractor that offers liability insurance. There are companies that don’t provide such and this is not too favorable on your part as any damage on your property caused by their carelessness will not make them liable.
License. The importance of licenses in Illinois roofing companies is similar with that of their insurance. Anybody can claim that they are an expert on what they do to get money from you. However, they may not provide the quality service that you’re expecting. With licensed contractor for roof replacement, you are assured that they’ve passed the high qualification standards required by the state where you live.
Guarantee. You should not only look after the guarantee of the material that your contractors use but to the service that they will be providing as well. Most importantly, the guarantee should be in detailed writing. One year guarantee is a norm.
Contract. This is considered a vital document that any roofing companies should provide their clients. Everything should be written down and signed by them in the contract such as the cost, payment schedule, completion date, roof materials to be used and the brand that you have agreed upon and lastly the cleanup schedules.