Making a wooden worktop to measure goes roughly like this: you pick a hard, stable timber (oak, beech, ash or bamboo), you let the top acclimatise for 1 to 2 weeks in the room it is going into, you cut it to size using a guide rail, you cut the openings for the sink and the hob, and you finish every face with at least two to three coats of worktop oil (the underside and the sawn edges included). Then you fit it onto the base units with fixings that let the wood move, so slotted holes or generously oversized screw holes, and you seal the joint against the wall. A standard kitchen worktop is about 38 to 40 mm thick, 60 cm deep and sits at 90 cm high.
Sounds manageable, and it is. But the difference between a top that still looks crisp in ten years and one that splits or warps after a single winter is all in the details.
Below I take you through the whole project: choosing the timber, the sizes, how wood moves, cutting to size, gluing up your own top, oiling, fitting, maintenance, costs and the mistakes I see people make over and over.
Replacing a whole kitchen worktop? Then read my article on renovating your kitchen too. Here I am going deep on the timber itself.
Cut a ready-made top to size, or glue up your own?
There are two routes, and which one suits you depends on your tools, your experience and your patience.
Buy a ready-made solid top and cut it to size. You order a kiln-dried, glued-up top from a timber merchant or DIY store and cut it to length yourself. The staves (the strips running lengthways) have already been glued under high pressure and are often finger-jointed to limit warping. For 9 out of 10 DIYers this is the sensible choice: you get a flat, stable top and you only have to cut it, make the openings and finish it.
Glue up your own from boards or strips. You buy loose strips or boards and glue your own top from them. This gives you the most freedom (and the biggest saving), but you do need the tools, the experience and a dead flat workspace. If your top does not come out perfectly flat, you will see it and feel it every single day. Only do this if you have worked with wood glue and clamps before.
My advice: if this is your first wooden worktop, buy a ready-made top and practise the cutting and the oiling. Save the glue-up for the second one, or for a less visible top like a workbench or a shelf.
Which timber should you choose for a worktop?
For a kitchen worktop you almost always want a hard, deciduous timber. Soft conifers like spruce and pine are cheap, but they dent easily, pick up moisture and stains faster, and are a poor match for a surface you work on every day. For a workbench or a shed top, softwood is perfectly fine. For a kitchen, it is not.
| Timber | Hardness | Moisture resistance | Price bracket | Watch out for |
|---|---|---|---|---|
| Oak | High | Moderate to high | Mid | The classic, naturally moisture resistant thanks to tyloses; ring-porous |
| Beech | Moderate | Low | Low (cheapest) | Fine grained, nice and light, but moves quickly with damp and temperature |
| Ash | High | Moderate | Mid | Whitish pale yellow, yellows slightly in the light |
| Elm | Moderate to high | Moderate | Mid | Warm figure, priced between oak and walnut |
| Bamboo | High | Moderate | Low to mid | Once dried, harder and more stable than most timbers, naturally antibacterial |
| Walnut | Lower | Moderate | High (most expensive) | Rich dark brown, but relatively soft |
| Teak / iroko | Very high | Very high | High | Oily and water repellent, ideal where there is a lot of water |
(Sources: uwkeukenblad.nl, keukenloods.nl on the properties of kitchen worktop timbers)
A few things worth knowing:
- Oak is the most popular choice for good reason. It is hard, warm in colour and naturally fairly moisture resistant because the pores are blocked with tyloses. The downside: oak is ring-porous, which blunts knives faster. So always use a chopping board.
- Beech is the cheapest and lovely to work, but it “moves” more: it shrinks and swells more as temperature and humidity change. So make sure the indoor climate is stable.
- Bamboo is technically a grass, but once dried it is hard, stable and naturally antibacterial. A good, affordable option.
- Teak and iroko are naturally full of oil, which makes them the most moisture resistant options, ideal around a sink or in an outdoor kitchen. Pricey, though.
What sizes should you work to?
Standard sizes make your project easier and mean a sink and a hob will simply fit.
- Thickness: a solid wood kitchen worktop is usually 38 to 40 mm thick. That thickness looks solid and stops it sagging over long spans (source: uwkeukenblad.nl, bouwonline.com). For a lighter top (a desk, a shelf) 27 mm is fine.
- Depth: a kitchen worktop is standardly around 60 cm deep, so it sits just proud of the base units.
- Height: the top surface normally sits at about 90 cm. Set this to your own height rather than blindly following the standard. It works far better.
- Overhang: let the top project about 2 to 3 cm past the units at the front. It looks tidier and protects the cabinet doors (source: DIY sources on worktop dimensions).
How wood moves: this is the most important bit
Wood is a natural product that takes up moisture and gives it off again. That makes it swell and shrink, mostly across its width (across the grain) and far less along its length. This is called wood movement, and it is the number one cause of splits and warping in home-made tops.
Two things follow from that, and you will meet them again and again below:
- Let the top acclimatise. Lay it flat for at least 1 to 2 weeks in the room it is going into, so the wood settles to the indoor climate. Aim for a moisture content of roughly 8 to 12 per cent and a household humidity of around 50 to 65 per cent (source: houtinfo.nl / Centrum Hout on the hygroscopic properties of wood). Skip this step and your top will simply do its moving after you have fitted it.
- Never fix the top rigidly. The wood has to be able to swell and shrink without being pinned down. More on that under fitting.
What tools do you need?
- A (plunge) circular saw with a guide rail for dead straight cuts. A guide rail is not a luxury here, it is close to essential: freehand you will rarely get a clean, square cut.
- A jigsaw (or a router with a template) for the sink and hob openings.
- A drill for pilot holes, among other things so you can start a cut from inside the panel.
- A sander (random orbit) plus abrasive paper in rising grits.
- Clamps if you are gluing up your own, plus a biscuit jointer or dowels to line the strips up.
- A spirit level and a tape measure for levelling and marking out.
- Worktop oil or hardwax oil, a brush and cloths for the finish.
Cutting to size, step by step
- Mark out accurately. Measure the run of units, add your overhang and mark the cut line with a pencil and a square. Measure, then measure again.
- Cut with the guide rail. Clamp the rail on your line and cut in one smooth pass. Stick masking tape along the cut line if you want to limit tear-out on the top surface.
- Cut the openings for the sink and the hob. Use the template supplied with the appliance or the manufacturer’s paper pattern to mark the opening. Drill a pilot hole in each corner so your jigsaw blade can drop in. Then cut from that pilot hole rather than plunging the blade into the surface, so you do not damage the top (source: pmg.be on building your own wooden kitchen worktop). Support the waste piece so it does not break out at the end of the cut.
- Ease the edges. Break the sharp top edge lightly with abrasive paper or a round-over bit. A slightly eased edge feels nicer under the hand and holds the finish better than a razor sharp corner.
- Sand it back. Sand with the grain (along the length), start coarse and work up to fine. Sanding across the grain leaves scratches you will only spot once the oil is on.
Gluing up your own top from strips
If you want to glue up your own, here is the approach:
- Lay the strips out with the growth rings alternating, so facing opposite ways. That way the strips work against each other and the top stays flatter (source: pmg.be).
- Use the right glue. Indoors a D3 wood glue (moisture resistant) will do. For a top around a sink or in a damp room, go for D4, the most water resistant class. The wrong glue, one that cannot handle moisture, is a classic cause of joints letting go.
- Line the strips up with a biscuit jointer or dowels, roughly every 40 cm. That keeps the strips in one plane and still lets you nudge the position while you clamp (source: pmg.be).
- Clamp firmly and evenly, alternating above and below, so the top does not bow. Wipe off squeeze-out straight away.
- Leave it at least 24 hours before you take the clamps off and sand the top flat (source: pmg.be).
Finishing: oil or varnish?
This is the step that decides how long you enjoy your top. For a kitchen worktop you go for oil over varnish in virtually every case.
Why oil? Oil soaks into the wood and lets it breathe. A scratch or a stain is a local repair: sand it, re-oil it, done. With varnish you have a hard film sitting on top; damage that film and moisture creeps underneath, and you have to redo the whole top. On top of that, many worktop oils and hardwax oils are food safe and saliva resistant once cured, which is exactly what you want on a kitchen worktop.
A concrete example: according to the manufacturer, Osmo Hardwax Oil is resistant to saliva and perspiration once dry, meets EN 71-3 (safe for toys) and stands up to wine, beer, cola, coffee, tea, fruit juice, milk and water in line with DIN 68861-1A (source: osmo.com, osmonederland.nl). For the clear version two coats are generally recommended, and a litre covers roughly 24 to 48 m² per coat depending on the product (source: parketenmeer.nl).
Here is how you finish it:
- Make sure the top is dry, clean and finely sanded.
- Apply a thin coat of oil with the grain, let it soak in and wipe the excess off properly after the stated time. Laying it on too thick gives you a sticky surface.
- Repeat as per the instructions. Two to three coats is normal for a kitchen worktop, and more on the hardest working areas.
- Treat every face. This is the mistake I see most often: people oil the top surface only. But it is precisely the underside, the sawn edges and the openings that take up moisture. Give those just as much attention, and put at least three coats on the sawn edges and around the sink opening (source: carpentiermooren.nl, teakea.nl on finishing all round). Untreated underside = moisture taken up on one side only = a warped top.
- Seal extra carefully around the sink. The edges of the sink opening are the most vulnerable part of the whole top. Oil them well and seal the join between sink and wood with a suitable mould-resistant sanitary sealant.
Fitting it onto the base units
Now for the part where wood movement comes back around.
- Sit the top loose on the units and level it. Correct with packers where you need to, so the top does not rock anywhere.
- Fix it so the wood can move. Screw the top down from underneath through the fixing brackets or the cross rails of the units, but drill the screw holes wider than the screw, or use slotted holes. Put a washer under the screw head that is bigger than the hole. That lets the top swell and shrink slightly across its width without splitting (source: carpentiermooren.nl). So never wind a screw up tight through a snug hole.
- Leave a gap at the wall. Leave a few millimetres of play between the top and the wall so it can expand, then finish that joint with sealant (source: carpentiermooren.nl).
- Seal the joints. The joint at the wall, the joint around the sink and the one around the hob: sealing them neatly keeps moisture out.
Maintenance: keeping your top looking good
An oiled top is not maintenance free, but the maintenance is simple.
- Re-oil a bit more often at the start. In the first few weeks to a month the wood drinks up oil, so a few extra rounds help. After that, re-oiling once or twice a year is normal, or as soon as water stops beading nicely (source: uwkeukenblad.nl).
- Never let water stand. Standing water is wood’s biggest enemy. Wipe up spills and puddles around the sink straight away.
- Always use a chopping board and never put hot pans straight onto the top. Use a trivet.
- Avoid rings by not leaving wet glasses and bottles standing on bare wood.
Common mistakes
- Not letting the wood acclimatise. The top just does its moving after you have fitted it, and it warps or splits.
- Only treating the top surface. The underside then takes up moisture on one side only and the top cups or crowns.
- Screwing it down rigidly. No room to move means splits. Always oversized or slotted holes.
- The wrong glue. A glue that is not water resistant will let go over time, certainly around the sink. Go for D3 or D4.
- Not sealing the sink edge. Moisture creeps into the sawn edge and the wood swells and goes black there.
- No gap at the wall. The top cannot expand and pushes itself out of shape.
What does a wooden worktop to measure cost?
The price depends heavily on the timber and on whether you cut it yourself or have it made. The ranges below are indicative.
| Timber (solid top) | Price per m² |
|---|---|
| Beech | approx. €80 to €130 |
| Bamboo | approx. €100 to €200 |
| Oak (rustic) | approx. €120 to €180 |
| Oak (select) | approx. €180 to €250 |
| Ash / elm | between beech and oak |
| Walnut | approx. €250 to €350 |
| Teak / iroko | approx. €200 to €400 |
| Oak butcher block (end grain) | approx. €250 to €400 |
(Source: uwkeukenblad.nl, bobex.nl, 2026 prices)
Per linear metre, a solid wood top starts at around €200 (source: uwkeukenblad.nl). Having a top made fully to measure with the openings routed and fitted costs more, and the lead time at a timber merchant can run to several weeks. Budget around €20 to €40 of oil per treatment for the finish (source: uwkeukenblad.nl). On tools, the plunge saw with a rail is where most of the money goes. If you already own one, cutting and oiling it yourself works out considerably cheaper than having it made.
Frequently asked questions
How thick should a wooden worktop be?
For a kitchen worktop, 38 to 40 mm is standard. That thickness gives you strength and stops it sagging over the units (source: uwkeukenblad.nl, bouwonline.com). For a lighter top such as a desk or a shelf, 27 mm is usually plenty.
Which wood is best for a kitchen worktop?
A hard, deciduous timber. Oak is the most popular for its hardness, its looks and its natural moisture resistance. Beech is the cheapest but moves more, bamboo is hard and affordable, and teak or iroko is the most moisture resistant but more expensive (source: uwkeukenblad.nl, keukenloods.nl).
Do I need to oil the underside of the worktop as well?
Yes, absolutely. If you only treat the top surface, the underside takes up moisture on one side only and the top warps. Treat the top and the underside, and give the sawn edges and the openings extra attention (source: carpentiermooren.nl).
Is worktop oil food safe?
Many worktop oils and hardwax oils are food safe and saliva resistant once fully cured. Osmo, for instance, states that it meets EN 71-3 and DIN 68861-1A (source: osmo.com). Always check the product label to see whether the wood may come into contact with food.
Why is my wooden top splitting or warping?
Almost always because of wood movement: it has not been acclimatised, it has only been treated on one side, or it has been screwed down too rigidly. Let the wood settle for 1 to 2 weeks first, treat every face and fix it with slotted holes so it can swell and shrink (source: houtinfo.nl, carpentiermooren.nl).
Oil or varnish for a kitchen worktop?
Oil. It soaks in, lets the wood breathe and can be repaired locally. Varnish forms a hard film that lets moisture through once damaged, and then the whole top has to be redone. For a kitchen, oiled wood is far more practical.
Time to get started
Making a wooden worktop to measure is very doable as long as you let the wood acclimatise, finish every face and fit it so it can move. Do that and you have a warm, repairable top that will last for years and only gets better looking with the odd re-oil.
Want to be sure your sizes, openings and construction are right first time? Then work from a proper building plan. At Fred’s DIY Plans you will find clear plans for furniture and timber projects, so you start with confidence instead of improvising halfway through. Good luck with the build, and do send me a photo of the result.