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As it approaches its 40th anniversary, Durabuilt Windows and Doors( Durabuilt) continues to set the standard for high-performance window and door manufacturing in Canada. Recognized as ENERGY STAR Manufacturer of the Year 2025 and a 14-time winner of Canada’ s Best Managed Companies, Durabuilt has built its reputation on innovation, operational excellence, and a people-first culture that drives long-term performance.
Originally founded as a custom PVC window and door manufacturer, Durabuilt was among the first Canadian companies to introduce a uPVC window and door system in 1988. Since then, the company has evolved into a full-scope manufacturer serving residential, multi-family, commercial, and industrial markets across Western Canada.
CEO Harry Sunner, who took over the business with his father in 1995, has led Durabuilt’ s growth from 12 employees to more than 800 today, while maintaining a strong focus on culture, accountability, and long-term partnerships.
“ At the end of the day, this business has always been about the people behind it,” says Sunner.“ We’ ve built Durabuilt by surrounding ourselves with strong teams, trusted partners, and customers who expect us to show up and deliver, year after year. Our culture is grounded in accountability, innovation, and respect – for our employees, our partners, and the communities we operate in. That’ s what allows us to keep raising the bar and evolving as a business.” win
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