{"title":"Treated Fir","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-sheets-root=\"1\"\u003eStrong, stable, and built to endure the elements, treated fir combines the structural reliability of Douglas Fir with the protective benefits of pressure treatment. We offer high-quality treated fir lumber ideal for decks, outdoor framing, landscaping structures, fences, and exposed exterior applications where strength and resistance to decay are essential. Douglas Fir is known for its exceptional strength-to-weight ratio, straight grain, and minimal warping, making it a preferred choice for load-bearing and framing projects. When pressure treated, it gains enhanced protection against moisture, rot, insects, and fungal damage, making it suitable for Canada's demanding outdoor conditions. As a proudly Canadian company, Windsor Plywood specializes in durable, hard-to-find building materials and provides expert, personalized service. Whether you're constructing a sturdy framework or building an outdoor feature that lasts, treated fir offers the resilience, dependability, and quality you can trust.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"treated-fir-construction-plywood","title":"Treated Fir Construction Plywood","description":"\u003cp\u003eTreated Fir Construction Plywood is pressure-treated for improved decay resistance in applications where the sheathing may be exposed to moisture, ground contact, or high-humidity conditions. Standard fir construction plywood with added preservative treatment. Available at Windsor Plywood locations across Canada.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePressure-treated for improved decay resistance\u003c\/li\u003e\n\u003cli\u003eStandard fir construction plywood with preservative treatment\u003c\/li\u003e\n\u003cli\u003eAvailable in standard 4 x 8 ft sheets\u003c\/li\u003e\n\u003cli\u003eSuitable for high-moisture and ground-proximity applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eTreated Fir Construction Plywood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eTreatment\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003ePressure-treated (preservative)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eSheet Size\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e4 x 8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eThicknesses\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e9.5mm, 12.5mm, 15.5mm, 18.5mm -- confirm at your branch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eAvailability\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eIn-store\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eCommon Uses\u003c\/h4\u003e\n\u003cp\u003eUsed for wall and roof sheathing in high-moisture areas, below-grade applications, rim board, and any structural sheathing application where the panel may be exposed to moisture, insects, or ground proximity.\u003c\/p\u003e\n\u003ch4\u003ePro Tips\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUse corrosion-resistant (ACQ-compatible) fasteners with treated plywood. Standard fasteners corrode rapidly in contact with treatment chemicals.\u003c\/li\u003e\n\u003cli\u003eTreated plywood can be cut and installed with standard tools. Wear a dust mask when cutting -- treated wood dust should not be inhaled.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eIs treated plywood required for all sheathing?\u003c\/strong\u003e\u003cbr\u003eNo. Treated plywood is required where the panel will be in contact with or in close proximity to the ground, in high-moisture environments, or where specified by your local building code. Standard untreated sheathing is sufficient for typical above-grade wall and roof applications.\u003c\/p\u003e","brand":"Windsor Plywood","offers":[{"title":"Default Title","offer_id":50093158629674,"sku":"","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/8622\/9546\/files\/756-0120-Treated-Fir-plywood.jpg?v=1744080665"},{"product_id":"treated-fire-retardent-fir-sheathing","title":"Treated Fire Retardent Fir Sheathing","description":"\u003cp\u003eTreated Fire Retardant Fir Sheathing is pressure-treated with fire retardant chemicals for applications where fire-resistant construction is required by building code. Provides both structural sheathing performance and fire resistance in a single panel. Available at Windsor Plywood locations across Canada.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePressure-treated with fire retardant chemicals\u003c\/li\u003e\n\u003cli\u003eMeets building code fire resistance requirements\u003c\/li\u003e\n\u003cli\u003eStandard fir construction plywood with fire retardant treatment\u003c\/li\u003e\n\u003cli\u003eAvailable in standard 4 x 8 ft sheets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eFire Retardant Treated Fir Sheathing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eTreatment\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eFire retardant pressure treatment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eSheet Size\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e4 x 8 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eThicknesses\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e1\/2\", 5\/8\" -- confirm at your branch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 12px;background:#f5f5f5;width:40%;\"\u003eAvailability\u003c\/th\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eIn-store\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eCommon Uses\u003c\/h4\u003e\n\u003cp\u003eRequired by building code in specific applications including multi-family residential construction, commercial buildings, and areas where fire separation is required. Confirm fire-retardant sheathing requirements with your building inspector or designer.\u003c\/p\u003e\n\u003ch4\u003ePro Tips\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFire retardant treatment may affect fastener compatibility and long-term structural performance in high-temperature roof applications. Confirm the specific product rating and limitations with the manufacturer data sheet.\u003c\/li\u003e\n\u003cli\u003eDo not substitute standard sheathing where fire retardant sheathing is specified by code.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is fire retardant sheathing required?\u003c\/strong\u003e\u003cbr\u003eRequired by building code in specific multi-family, commercial, and institutional applications. Confirm requirements with your building designer or local building inspector.\u003c\/p\u003e","brand":"Windsor Plywood","offers":[{"title":"Default Title","offer_id":50093158826282,"sku":"","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/8622\/9546\/files\/756-0205-Treated-Fir-Fire-Retardent-2.jpg?v=1744080670"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/8622\/9546\/collections\/756-0205-Treated-Fir-Fire-Retardent-1.jpg?v=1746294975","url":"https:\/\/www.windsorplywood.com\/collections\/treated-fir\/plywood-sheet-goods.oembed","provider":"Windsor Plywood","version":"1.0","type":"link"}