Alliance Roofing is a Full-Service Premier Flat Roofing Contractor based out of Guelph, Ontario. Our Flat Roofing expertise include:  EPDM, TPO, PVC, Modified Bitumen and Built-Up Roofing. With over 50,000,000 square feet and thousands of projects completed, let our professional team’s experience be a part of your next successful roofing project.


Quality, knowledge, leadership and integrity are all synonymous with Alliance Roofing. We will do everything we can to provide you with the best professional Flat Roofing experience complete with a high degree of customer service. Providing superior Service is our mandate, while we lead the way in an ever changing Flat Roofing environment. With our team of experts, we strive to surpass the customer’s expectations in every way.


At Alliance Roofing we are committed to our customers, employees and the community. With our highest standard of Safety, Workmanship, and Customer Relations, we ensure that our clients and their investments are protected for years to come. We strive to provide services that exceed industry standards. Versatility and dependability along with our excellent service and competitive pricing sets us apart from the competition. The professionalism and diversified skills of our staff contribute to the development of our strong customer base.


We are members of the Ontario Industrial Roofing Contractors Association (OIRCA) and the Canadian Roofing Contractors Association (CRCA). Alliance Roofing has been awarded the Firestone Master Contractor and Carlisle’s Excellence in Single Ply awards for 2015.

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