Treated

Durable, dependable, and built for the elements, treated wood is a top choice for outdoor construction and landscaping projects. We carry a wide selection of treated lumber ideal for decks, fences, retaining walls, garden beds, and other exterior structures that need long-lasting protection from moisture, insects, and decay. Treated wood is infused with preservatives through a pressure treatment process, making it resistant to rot, fungal growth, and pest damage—perfect for withstanding Canada’s varied and often harsh climates. Available in multiple sizes and profiles, it provides structural strength and peace of mind for outdoor builds of any scale. As a proudly Canadian company, Windsor Plywood specializes in quality, hard-to-find building materials and provides expert, one-on-one service. Whether you're starting a backyard project or tackling a major outdoor build, treated wood delivers the resilience and performance you need for lasting results.