Therma-Tru Fibreglass Entry Doors

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      Make a lasting first impression with our premium selection of exterior doors. Designed to combine curb appeal with durability, our exterior doors are built to withstand the elements while enhancing the look and security of your home. Choose from a variety of materials and styles, including solid wood, fibreglass, and steel doors—available in classic, craftsman, and modern designs. We also offer customizable options with decorative glass inserts, sidelites, and transoms to suit your unique entryway. Whether you’re building new or replacing an old door, our products are selected for their quality, energy efficiency, and long-lasting performance. As a proudly Canadian company with locally owned stores, Windsor Plywood specializes in hard-to-source products and one-on-one customer service. Visit your local store to explore our full range of exterior doors and get expert guidance to help you find the perfect fit for your home’s style and climate.

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      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.