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Versatile and essential for countless interior finishing projects, our selection of flat stock offers clean lines and endless possibilities. Also known as S4S (surfaced four sides) lumber, flat stock is ideal for creating custom trim, casings, baseboards, window and door accents, shelving, or modern minimalist moulding. We carry a wide selection of sizes, profiles, and species—including MDF, pine, fir, hemlock, and more—so you can find the perfect material to suit your style and project needs. Whether you're building new or updating an existing space, flat stock provides a simple, refined look that works beautifully in both traditional and contemporary designs. As a proudly Canadian company with locally owned stores, Windsor Plywood offers hard-to-source materials, quality craftsmanship, and expert advice. Visit your local store to browse our full selection of flat stock and find exactly what you need to bring your vision to life.
Frequently Asked Questions
What types of moulding does Windsor Plywood carry?
Windsor Plywood carries a comprehensive range including baseboard, crown, casing, cove, trim, flat stock, architrave, cabinet moulding, floor mouldings, and finishing lumber. Profiles are available in solid wood species such as oak, maple, fir, and hemlock, as well as MDF and paint-grade composites.
What is the difference between wood moulding and MDF moulding?
Wood moulding shows natural grain and takes stain beautifully, making it the preferred choice when the natural material is part of the design intent. MDF moulding has a perfectly smooth, consistent surface ideal for painted applications and is generally more affordable. MDF should not be used in areas with moisture exposure.
How do I choose the right profile size for my room?
Scale to ceiling height. In rooms with standard 8-foot ceilings, baseboard in the 3-inch to 4-inch range and crown moulding around 3 inches reads proportionately. Taller ceilings support wider, more elaborate profiles. A common error is using undersized moulding that looks timid in a large room or oversized moulding that overwhelms a small one.
Can I mix different moulding profiles in the same home?
Yes, but maintain consistency within each room and coordinate the visual weight between adjoining spaces. The style category should be consistent throughout. Combining a contemporary flat-profile baseboard with an ornate Victorian crown moulding in the same room reads as unresolved. Windsor Plywood staff can help identify profiles that work together.
What is the best wood species for moulding in a high-traffic area?
Hard maple and oak are the most durable choices for mouldings that will take physical contact and wear, such as baseboards in hallways. Fir and hemlock are strong and take paint well. For areas that will be stained, choose a species that matches or complements your existing millwork and flooring.