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Durable, versatile, and low-maintenance, our fibreglass products offer a smart solution for modern home builds and renovations. Commonly used in exterior doors, fibreglass is known for its superior resistance to warping, cracking, and weathering—making it ideal for withstanding Canada’s diverse climate conditions. Our fibreglass doors are designed to mimic the look and texture of real wood while providing enhanced insulation, energy efficiency, and long-lasting performance. Whether you're looking for a sleek, modern design or a traditional woodgrain finish, we carry a range of styles to suit your home’s aesthetic and budget. Windsor Plywood is proud to offer high-quality, hard-to-source building materials with a focus on outstanding value and personalized service. With over 60 locations across Western and Central Canada and the Northwestern US, we’re here to help you choose the right fibreglass products to bring your vision to life.
Frequently Asked Questions
What Therma-Tru products does Windsor Plywood carry?
Windsor Plywood carries Therma-Tru fiberglass and steel exterior door systems. Therma-Tru pioneered the fiberglass entry door in 1982 and offers a comprehensive portfolio of entry and patio door solutions. Products include fiberglass doors in smooth and textured finishes, steel doors, and glass panel systems, with more than 80 percent of door and glass options ENERGY STAR qualified.
What makes Therma-Tru fiberglass doors energy efficient?
Therma-Tru fiberglass doors achieve superior thermal performance through polyurethane foam core insulation, thermally broken door frames that prevent cold transfer, and factory-applied weatherstripping systems engineered for a tight, consistent seal.
Can Therma-Tru doors be stained to look like wood?
Yes. Therma-Tru fiberglass doors with a wood-grain texture are designed specifically for staining and can be finished to closely replicate the appearance of a natural wood entry door. Smooth fiberglass and steel doors are designed for painting. Therma-Tru provides staining guidelines and recommended finishing products for each door texture to achieve the best result.
Are Therma-Tru doors pre-hung or slab only?
Therma-Tru door systems are available as pre-hung units complete with the frame, weatherstripping, and hardware preparation. This is the standard format for new construction and most replacement applications. Confirm with your local Windsor Plywood location whether slab-only options are available for situations where only the door panel needs to be replaced.
What is the Therma-Tru warranty?
Therma-Tru offers a limited lifetime warranty on their fiberglass door slabs against defects in material and workmanship under normal residential use. Glass and finish components carry separate limited warranties. Specific warranty terms vary by product line and must be registered after purchase.