About Tremblar Building Supplies
Local expertise. Quality products. Solutions you can trust.
Who Are We
Built on Experience.
Tremblar Building Supplies is a trusted provider of commercial openings and building solutions since 1975, growing from a small distributor into a market leader through a focus on operational excellence and customer service. We are proudly based in Oldcastle, Ontario, and serving Windsor, Essex County, and Chatham.
Our Mission
Focused on Solutions.
Our commitment to quality products, expert knowledge, and exceptional service has made us a partner of choice for contractors, architects, and facility managers.
We’re more than a supplier — we’re a local partner invested in your success.
What We Do
We are a trusted supplier of hollow metal steel doors, window frames and finished door hardware for contractors and developers. With decades of industry experience, we understand the unique demands of commercial, institutional, and industrial projects.
What Sets Us Apart
Whether you are bidding on a large-scale institutional development in Windsor, upgrading an industrial facility in Tecumseh, or managing a commercial build in Chatham-Kent, Tremblar provides the technical expertise and robust product availability your project demands. From initial takeoff to final delivery, we bridge the gap between architectural blueprints and structural reality.
Experienced team
Team of professionals with hands-on experience in commercial openings and building solutions.
Fast & Reliable
We respond quickly and deliver solutions that keep your projects on schedule and on budget.
Quality Products
Specialized products and solutions built to meet the unique needs of your commercial project.
Local & Committed
Based in Oldcastle, ON. Proudly supporting local contractors, businesses and community.
Brands Work With The Best
We partner with industry-leading manufacturers to bring you the best in quality and performance.
Tremblar’s Service Area
Ready to start a project with us?
Our team is ready to help you choose the right products and solutions for your commercial building.