Great Lakes Roofing and Insulation Systems specialize in the installation and care of the Duro-Last Roofing System. For over 40 years Duro-Last has led the industry in PVC membrane roofing and GLR & IS has been a part of that success for more than 35 years.
Did you notice we are a Platinum Contractor? We are proud to be a Duro-Last Platinum Contractor but what does that mean exactly? With each commercial roof installation, Duro-Last sends a Quality Assurance Technician to inspect the completed project. The QA then grades the installation. This last year, we installed more than 500,000 square feet of roofing and earned higher than a 95% average grade.
As our customer, you benefit from the family-type relationship we have developed with the manufacturer. We work together to bring you a superior product with the best installation to deliver the best roof!