Cornell Roofing Co. Inc. is a full-service, family-owned, and operated roofing company located in Concord, CA. We are proud to be the roofing contractor of choice for homeowners and businesses in and around Contra Costa County. Experience is our most valuable tool. Cornell is run by the 4th generation of a long line of family roofers. With over 70 years of experience, we have tackled every problem and crossed every bridge. Our staff is capable and skilled. Our success can be measured in thousands of satisfied customers in your local area. References supplied on demand. All of our employees are protected by workers' compensation insurance.