Fibreglass Exterior Doors

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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.

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      Frequently Asked Questions

      What fiberglass door products does Windsor Plywood carry?
      Windsor Plywood carries fiberglass exterior entry doors from brands including Masonite, Therma-Tru, Codel, and Jeld-Wen. Fiberglass doors are available in smooth and wood-grain textured finishes, with options for decorative glass inserts, side lites, and factory-applied paint and stain finishes in a range of colours.
      What are the main advantages of fiberglass exterior doors?
      Fiberglass exterior doors do not rot, rust, warp, or crack through the freeze-thaw cycling and humidity changes common in Canadian climates. They provide superior thermal insulation compared to steel doors due to their polyurethane foam core. Wood-grain textured fiberglass doors can be stained to closely replicate the appearance of wood without wood's maintenance requirements. Most fiberglass door systems are ENERGY STAR qualified.
      Can fiberglass doors be stained to look like wood?
      Yes. Fiberglass doors with a wood-grain embossed texture are specifically designed to accept stain and closely replicate the appearance of natural wood entry doors. The staining process is similar to wood but requires fiberglass-compatible staining products. Manufacturers including Therma-Tru and Codel provide staining guidelines and recommended products for their specific door surfaces. Smooth fiberglass doors are designed for painting only.
      How do fiberglass doors compare to steel doors in security?
      Both fiberglass and steel exterior doors provide good residential security when paired with quality locksets and deadbolts. Steel doors have a slight advantage in impact resistance to forced entry. Fiberglass doors resist denting and do not conduct cold the way steel frames do, providing better thermal performance. For residential applications, the security difference between a quality steel and a quality fiberglass door is minimal when the lockset and strike plate are properly installed.
      What is the typical warranty on fiberglass exterior doors?
      Premium fiberglass door manufacturers including Therma-Tru and Masonite offer limited lifetime warranties on their fiberglass door slabs against defects in materials and workmanship. Glass and finish components typically carry shorter, separate warranties. Warranty coverage requires registration after purchase and applies only to residential use. Confirm current warranty terms with Windsor Plywood staff at the time of purchase.