
Cossins Windows
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Custom vinyl window assemblies ready for installation.
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John Cossins
Manufacturing ManagerHelping custom builders coordinate structural framing, EWP design runs, and site drops for over 15 years.
Dave Windows
Architectural RepresentativeDedicated jobsite liaison managing on-site logistics, schedule updates, and rush framing fill-in orders.
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Company Profile
Cossins Windows has been family-run in Calgary since 1978. Now in our third generation, we manufacture vinyl, wood, and aluminum-clad windows in our local shop.
We build custom wood and clad window systems with clear hemlock interiors and custom exterior colors. We also carry entry doors, French doors, and skylights.
As a manufacturer-direct supplier, we manage lead times and quality, hosting an active northeast showroom for design consultation and warranty support.
Facility & Operations Gallery

Custom vinyl window assemblies ready for installation.

Traditional wood French entry door systems.

Showroom display of wood and clad window sections.
Key Yard Scale & Metrics
Google Business Contractor Feedback
Verified contractor accounts only. Ratings audited quarterly.
“We shifted our custom residential framing packages to Cossins Windows last season. Their takeoff estimators are meticulous—they spotted a load-bearing transfer discrepancy in our drawings that would have cost us thousands in framing corrections. Elite service.”
“Their crane truck operators are the best in the business. Staged three heavy framing drops on a steep, narrow hillside lot with zero damage to the trees or neighbor's fence. Very dependable logistics dispatch.”
“Top-notch independent supplier counter. They don't just scan tags—they actually understand engineered wood and local code requirements. Whenever I call, I get direct answers on dispatch times and pricing buffers.”
Yard Staged Info
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