When talking to roofing professionals over the phone, and understands that there a range of factors that identify how much your roof costs. If they have a one-track mind, it means they won't be prepared if there are any problems during the installation. Question # 6: Can you do a stopover instead of a complete roofing system replacement? Another quick test to determine whether or not you're dealing with an ethical, reliable roofing service is to ask for a "layover." This is a trick concern, so it is necessary that you ask precisely how it's written above.