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Strong, stable, and versatile, fir is a trusted choice for a wide range of building and woodworking applications. We offer premium fir lumber and products ideal for structural framing, furniture, doors, trim, and custom projects that call for both durability and natural beauty. Fir features a straight grain, minimal knots, and a warm, reddish-brown hue that finishes beautifully with stain or clear coat. Known for its excellent strength-to-weight ratio and dimensional stability, fir is easy to work with and ideal for both interior and exterior use—especially in Canadian climates where reliability matters. As a proudly Canadian company, Windsor Plywood specializes in hard-to-find wood species and expert advice tailored to your project. Whether you're renovating, building, or crafting something custom, fir offers the dependable performance and classic appeal to bring your vision to life.
Frequently Asked Questions
What is flat stock moulding and where is it used?
Flat stock, also called S4S (surfaced four sides), is smooth-planed lumber in standard widths used as trim, casing, panelling components, shelf edging, and general finishing work. It has no decorative profile. The clean, flat face is the design and it is particularly popular in craftsman-style and contemporary interiors.
What wood species are available in flat stock at Windsor Plywood?
Common species include pine, poplar, oak, maple, and MDF in painted grades. Species selection depends on the application. Poplar and pine take paint well and are cost-effective; oak and maple are used where the wood grain will be visible. MDF flat stock is the smoothest option for painted trim.
What sizes does flat stock typically come in?
Flat stock is available in standard nominal widths from 2 inches up to 12 inches and beyond, in various thicknesses. The actual finished dimensions are slightly under the nominal size after planing. Windsor Plywood can confirm available dimensions and lengths for specific project requirements.
Can flat stock be used for craftsman-style casing and trim?
Flat stock is one of the defining materials of craftsman-style trim. Craftsman casing typically uses wide flat stock with a back band detail, and craftsman baseboard uses flat stock with a cap moulding. The result is clean, architectural, and easy to execute compared to heavily profiled traditional trim.
Is flat stock suitable for shelving?
Yes. Wider S4S flat stock in species like maple, oak, or pine is a practical shelving material, particularly for built-in applications and shop shelving. It should be appropriately sized for the span and load. Unsupported spans longer than 24 to 32 inches in 3/4-inch material will sag under significant weight.