Make sure that the company that you choose is local. This means that they are not just operating locally now, but have an established business and reputation in the community. We have had many calls from customers that have problems within the standard five-year warranty period. The company that they chose to install their roof closed, moved or vanished. It is very easy to provide a piece of paper, but the warranty is only as good as the longevity and reputation of the roofing company.