About Us

Who we are

As part of the One Alliance Group of Companies (Limited), One Alliance Roofing offers roof replacement and repair services to both residential and commercial clients throughout the Greater Toronto Area. We are fully equipped to complete work on shingle and flat roofs alike.

Our carefully trained and experienced roofers get the job done safely, on time, and with great attention to detail- ensuring client satisfaction while preventing costly, unforeseen repairs. We treat your property with great care as if it were our own.

Our services are covered by $2 million liability insurance. Additionally, our employees are insured under the WSIB (Workplace Safety Insurance Board). All One Alliance Roofing employees have completed Working at Heights training, and as such, are equipped with relevant fall protection equipment.

One Alliance Roofing is an Authorized Installer of roofing materials from various reputable manufacturers, including IKO, GAF, CertainTeed, Owens Corning, and BP (Building Products of Canada).

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We will get back to you ASAP!

For emergencies, Call 416-828-1300