How Do You Make a Bench for Dining Table?

To make a dining bench, cut a solid timber seat to your chosen length, build two leg assemblies from timber of the same thickness, join them with a stretcher or apron rails for rigidity, fix the seat to the leg frames from underneath, then sand and finish. A basic bench for a dining table needs a seat around 30cm to 40cm deep, a height of 45cm to 47cm, and a length that matches or slightly undershoots the table it sits at.

The whole build is achievable with a saw, a drill, a sander, clamps and a square. The joinery can be as simple as screwed butt joints with glue, or as considered as mortise and tenon, depending on what tools you have and how much you enjoy the process.

Getting the Dimensions Right

Start with the height. A dining bench should have its seat 27cm to 30cm below the underside of the table apron, and since most dining tables sit at 73cm to 78cm high, a bench seat at 45cm to 47cm works with almost all of them. Measure your specific table before cutting anything, because a table with a deep apron rail reduces the usable clearance.

Seat depth of 30cm to 40cm suits dining use. Deeper than that and people cannot get their feet under the table comfortably. Shallower than 28cm and the bench feels precarious.

Length depends on the table. A bench should be slightly shorter than the table’s clear span between legs so it can tuck fully underneath. Measure that gap, then subtract 2cm to 4cm. If your table has corner legs, the bench length is limited by the distance between them. If it has a trestle or pedestal base, you have more freedom.

Allow 45cm to 50cm of bench length per person. A 120cm bench seats two adults comfortably or three at a squeeze.

Choosing Timber

For the seat, solid hardwood in 25mm to 40mm thickness gives the best result. Oak, ash and beech are all readily available in the UK and machine well. Pine works and is considerably cheaper, but it dents easily and a bench takes more abuse than a tabletop.

If you cannot source a single wide board, glue up narrower boards edge to edge. Alternate the growth ring direction on each board so any cupping tends to cancel out rather than compound. Use a waterproof PVA or polyurethane adhesive and clamp across the joint every 20cm to 30cm.

For the legs, use timber of similar thickness to the seat, or slightly thicker for a sturdier look. A 45mm square leg section is a reasonable starting point for a bench up to 150cm long.

Buy your timber a few days before you build and store it in the room where the bench will live. Timber moves as it acclimatises to indoor humidity, and building with boards straight from a cold warehouse leads to gaps opening up later.

Building the Leg Assemblies

Cut four legs to the seat height minus the seat thickness. If your seat is 30mm and your target height is 45cm, the legs are 42cm.

Each end of the bench gets a leg pair joined by a horizontal rail near the top. This rail is what stops the legs racking sideways, and it does most of the structural work. Fix it with glue plus either dowels, a mortise and tenon, or screws driven through counterbored holes and plugged. Screwed joints are perfectly sound for a bench and much faster to execute.

Check each assembly for square as the glue sets. Measure the diagonals: if they match, the frame is square. Clamp it flat on a level surface and let the adhesive cure fully before handling.

For a splayed leg look, cut the top and bottom of each leg at a matching angle, typically five to ten degrees, and angle the rail joints to suit. Splayed legs look lighter and add stability, but they complicate every cut, so straight legs are the sensible first project.

Joining the Two Ends

The two leg assemblies need connecting, and this is where a bench either feels solid or wobbles.

The simplest approach is a single central stretcher running the length of the bench between the two leg rails, fixed at each end. This resists the bench folding along its length and is very effective.

An alternative is a pair of apron rails running along the underside of the seat, one near each long edge, fixed to the leg assemblies at both ends. This creates a box structure that is extremely rigid and also gives you more surface to fix the seat to.

For benches over 150cm, use both: apron rails and a central stretcher. Long benches flex noticeably in the middle when someone sits down, and the extra bracing removes that.

Fixing the Seat

Always fix the seat from underneath so no fixings show on the sitting surface.

Because solid timber expands and contracts across its width with seasonal humidity changes, the seat needs to be able to move slightly. Fix it with screws through slightly oversized holes or slots in the apron rails, or use proprietary tabletop fasteners. Screwing a wide solid seat rigidly to a frame at every point is how splits develop over a winter of central heating.

Position the seat centrally with an even overhang at each end, typically 2cm to 5cm. Overhang looks intentional and gives somewhere to grip when moving the bench.

Round over the seat edges before fixing. A bench edge sits directly under the back of the thigh and a sharp arris becomes uncomfortable within minutes. A small radius, even just a heavy sanding of the corner, transforms how it feels.

Sanding and Finishing

Sand through the grits: start at 80 or 100 to remove machine marks, move to 120, then 180, and finish at 240 for a surface that will take oil or wax evenly. Sand along the grain, not across it. Wipe the surface with a damp cloth between the final two grits to raise any compressed fibres, let it dry, then sand again lightly.

Pay particular attention to the seat surface and the edges, since those are the parts people touch.

For finish, hardwax oil is the practical choice for a dining bench: it is durable, easy to reapply, and repairs locally without stripping the whole piece. Apply thin coats with a cloth, allow the manufacturer’s recommended drying time, and lightly abrade between coats. Two or three coats on the seat, two on the frame.

Alternatively, a wax finish gives a softer, more traditional look but needs feeding more often. A lacquer gives the hardest surface but cannot be spot repaired.

Finish the underside as well as the top. An unfinished underside absorbs and releases moisture at a different rate from the sealed top, and that imbalance is what makes a seat cup.

Matching It to Your Table

A homemade bench will rarely match a factory finished table exactly, and trying too hard to match usually looks worse than embracing a difference. A bench in a contrasting timber or a painted frame with a natural timber seat reads as deliberate.

Consider pairing the bench with two chairs on the opposite side rather than a second bench. That gives the practical efficiency of a bench against the wall with the comfort of chairs where people linger. Our wooden dining chairs UK sale range includes designs that sit comfortably alongside a plain timber bench.

Think about the table too. A bench works best with a table that has no corner legs in the bench’s path, so trestle and pedestal bases suit them particularly well. If your current table fights the bench, our modern wooden dining tables UK sale selection includes base designs built with bench seating in mind.

If You Would Rather Not Build

Making a bench is satisfying and inexpensive in materials, but it takes a weekend and a reasonable set of tools. If the appeal is the space saving rather than the woodwork, a ready made bench delivers the same benefit immediately and with a factory finish that is hard to match by hand.

Ready made benches also come in sizes matched to standard tables, which removes the measuring risk. Our dining benches UK sale range covers most table widths, and for households replacing the whole arrangement our modern dining table and chairs sets UK sale collection includes sets with bench seating included. At Furniture in Fashion we offer free delivery to most UK mainland postcodes on our dining range.

Frequently Asked Questions

What height should a dining bench be?

Between 45cm and 47cm, which gives 27cm to 30cm of clearance under a standard dining table at 73cm to 78cm high. Check your specific table apron depth before cutting the legs.

How wide should a dining bench seat be?

30cm to 40cm suits dining use. Any deeper and it becomes difficult to get your feet under the table; any shallower and the bench feels unstable to sit on.

What thickness timber do you need for a bench seat?

25mm to 40mm solid hardwood works well for benches up to 150cm. Thinner boards will flex in the middle unless supported by additional apron rails or a central stretcher.

Can you make a dining bench without advanced joinery?

Yes. Glued and screwed butt joints with counterbored, plugged holes produce a bench that is entirely sound. The critical detail is bracing the two leg assemblies with a stretcher or apron rails so the frame cannot rack.

How many people fit on a dining bench?

Allow 45cm to 50cm of length per adult. A 120cm bench seats two comfortably, a 150cm bench three, and a 180cm bench three generously or four at close quarters.