Leaders in Flat Roofing Services in Ontario Since 1975

Gencan Roofing and Waterproofing‘s success is the result of the long-term relationships we have developed with our customers. Also, we provide exceptional Flat Roofing Services in Ontario.

Achieving Your Goals

Gencan Roofing and Waterproofing ltd. is a roofing company based in Oshawa, Ontario, Canada, that specializes in flat roofing installations, repairs, and maintenance services. We have been in business for over 25 years and have built a reputation for providing high-quality, professional roofing services to residential, commercial, and industrial customers in the GTA and surrounding areas

Dependable & Reliable

All Gencan Roofing products are the highest quality and carry warranties that exceed the industry standards both in length and in comprehensiveness. Gencan Roofing and Waterproofing ltd offers 10-25 year workmanship warranties depending on the membrane on all Commercial and Industrial flat roofing installations. We also offer reasonable financing options.

We offer a range of flat roofs, including TPO roofing, PVC roofing, EPDM roofing, metal roofing, and more. We pride ourselves on using only the highest quality materials and providing excellent customer service. Our team of experienced and certified professionals can provide expert advice and assistance with all aspects of flat roofing, from initial design and installation to ongoing maintenance and repairs.

Darren Thank you for the work you have done for us ..... couldn't have got a better person doing my roof
Monument Depot Inc


I had a flat roof in Toronto, they responded to me and gave me good advice, i got a low quote, it was way better then the others, i gave Darren the job and i am happy i did, my roof hasn't had a leak yet. Thanks Darren


Our house lost a bunch of shingles during the recent wind storm. We had originally used Gencan Roofing and Waterproofing ltd to install the shingles about 8 years ago. Without any hesitation they were able to find our matching shingles and had the repairs done within 48 hours of the storm. Unbelievable Service and they did this repair at no cost. I would highly recommend Gencan Roofing and Waterproofing ltd as they have great customer service and workmanship.



    Scroll to Top
    Call Now