Make sure to ask about warranties and the guarantee on the materials. A roofer should also be able to provide you with references and customer testimonials. You should also ask them about their insurance policy. They should be willing to answer any other questions that you may have about roofing including the roofer’s experience and qualifications. When looking for a roofer, remember to take into consideration things like how long the company has been in business, how long their insurance has been in effect, if the roofer is licensed, has a clean and pleasant reputation and any complaints that have been filed against the contractor.