Hardwood S4S Lumber
S4S Lumber to Jumpstart Your Projects
Just as the name suggests, S4S (surfaced four sides) lumber is planed on all four sides, as compared to S2S wood, which is surfaced on two sides, and S3S, which is surfaced on three sides. The process of surfacing the wood removes any roughness, imperfections, and irregularities, resulting in wood that is uniform in size, shape, and texture.
S4S wood is ideal for woodworkers who don't own a planer, jointer, or table saw. When you want boards ready to go out of the gate, you can't go wrong with our collection of S4S lumber. We hand pick every piece to ensure the best possible wood for your project. Order today, and experience the difference our boards make in your project.

What is S4S Lumber?
S4S lumber is planed and jointed on all four sides before it gets to you, so it's flat, straight, and ready to work with right away. It's the perfect option if you don't have a jointer or planer, or if you just want to skip the prep work and get straight to building. We hand pick every piece to make sure you're getting quality wood, and we carry over 30 species in a range of thicknesses, from 1/4" thins to 1-5/8", to suit any project, whether you're building furniture, cabinets, cutting boards, or anything in between.
Frequently Asked Questions About S4S Lumber
The Wood Vault is a trusted source for S4S lumber, and we're well-positioned to answer your questions. Read on to learn more.
What is S4S lumber?
What is S4S lumber?
S4S lumber stands for “Surfaced Four Sides,” meaning the wood has been planed and smoothed on all four sides for a straight, consistent, and ready-to-use board. Unlike rough cut lumber, S4S wood requires little to no milling before your project begins.
What is the difference between S4S lumber and rough cut lumber?
What is the difference between S4S lumber and rough cut lumber?
S4S lumber is pre-milled, smooth, and dimensionally consistent, while rough cut lumber requires additional preparation such as jointing, planing, and ripping before use.
What can S4S lumber be used for?
What can S4S lumber be used for?
S4S lumber can be used for furniture making, cabinetry, cutting boards, shelving, home décor, trim work, woodworking projects, and DIY builds.
Is S4S lumber ready to use?
Is S4S lumber ready to use?
Yes, S4S lumber is often considered project-ready because it has already been surfaced on all four sides.
What wood species are available in S4S lumber?
What wood species are available in S4S lumber?
S4S lumber is available for all rough lumber species we carry, giving woodworkers access to a huge variety of domestic and exotic hardwoods.
What thicknesses does S4S lumber come in?
What thicknesses does S4S lumber come in?
S4S lumber is available in multiple thicknesses, including thin stock and thicker boards for furniture, cutting boards, and structural woodworking applications. Common options often include 1/4", 1/2", 3/4", and thicker selections.
Do you need a planer or jointer for S4S lumber?
Do you need a planer or jointer for S4S lumber?
No, one of the biggest advantages of S4S lumber is that it has already been surfaced and squared, making it ideal for woodworkers who do not own milling equipment like planers or jointers.
What sizes are S4S boards available in?
What sizes are S4S boards available in?
S4S boards are available in a range of widths, lengths, and thicknesses depending on the species and product selection. Many boards are sold in project-friendly sizes for furniture, cutting boards, hobby projects, and woodworking builds. If you need a custom size, reach out to us directly.
Why choose S4S lumber for woodworking projects?
Why choose S4S lumber for woodworking projects?
S4S lumber saves time, and helps ensure more consistent results because the boards are already straight, flat, and smooth.
Can S4S lumber be stained or finished?
Can S4S lumber be stained or finished?
Yes, S4S lumber can be stained, painted, oiled, or clear coated depending on the wood species and project goals.
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