Hemlock S4S Lumber

Hemlock S4S Lumber is a solid hemlock S4S (surfaced four sides) finishing lumber, unfinished -- ready for your choice of paint, stain, or clear finish. S4S lumber is surfaced smooth on all four faces, ready for finishing or installation without additional planing. Used for custom trim, furniture components, and any application where a square, smooth board is the starting point. Available at Windsor Plywood locations across Canada.

Features

• Solid Hemlock -- pitch-free and resin-free, accepts paint and stain more evenly than any other softwood
• Consistent pale colour with straight, fine grain -- produces a smooth, clean surface under both paint and clear finish
• Standard profile -- Interior trim, casing, baseboard, furniture components, and custom millwork
• Available at Windsor Plywood locations across Canada -- confirm stock at your local branch

Specifications

Common Uses

Cut and install as needed for your specific application. Hemlock is the preferred softwood for stained moulding. Its pitch-free surface means no bleed-through under paint and no blotching under stain.

Pro Tips

• S4S lumber is the starting point for any custom moulding or trim profile -- rout the edge profile you need with a router and the appropriate bit.
• For paint: apply directly -- no knot sealer needed. For stain: hemlock accepts stain evenly with a pre-stain conditioner. For clear finish: sand to 180-grit and apply water-based polyurethane or lacquer.
• Available in multiple species -- confirm sizes and stock at your local branch.

Frequently Asked Questions

What does S4S mean?
Surfaced Four Sides -- all four faces are planed smooth and square. The board is ready to use without additional planing or jointing.

Why choose hemlock over pine?
Hemlock is pitch-free -- no resin bleed under paint, no sticky sap. It also accepts stain more evenly than pine. Hemlock is the premium softwood choice when finish quality matters.