# How to build a standing desk from a frame and desktop

Source: https://chairandposture.co.uk/blog/how-to-build-a-standing-desk
Published: 2026-10-12
Publisher: Chair and Posture

**In short:** Buy an electric frame sized for your top, choose a desktop at least 18 to 25 mm thick within the frame's width and depth limits, then assemble the frame upside down on the underside of the top. Use screws shorter than the top's thickness, fit the control box and handset, turn the desk upright with help, and run a reset before first use.

Building a standing desk usually means buying a frame and adding your own top. It lets you choose a desktop size and finish, reuse an existing desk top, or pick a frame with better motors than a ready-made desk at the same price. This guide covers choosing the parts, fitting them together and the checks before you use it. It is a general guide, so follow your frame's manual where it differs.

## Choosing a frame

Look at height range, motors and load. The height range must cover your seated and standing elbow heights; our [desk height tool](https://chairandposture.co.uk/tools/desk-height-fit) checks this. Dual motor frames with three-stage legs give the widest range and handle heavier loads. Our [single vs dual motor explainer](https://chairandposture.co.uk/blog/single-vs-dual-motor-standing-desk) covers the differences.

Check the frame's width adjustment and supported top sizes. Our [standing desk frames guide](https://chairandposture.co.uk/best/best-standing-desk-frames) compares frames using these figures.

[Compare standing desk frames](https://chairandposture.co.uk/best/best-standing-desk-frames)

## Choosing a desktop

Kitchen worktops, solid wood panels, plywood and ready-made desktop boards all work. What matters most is size, thickness and weight, because the top sits on a frame with a limited span and load.

Solid wood looks good but is heavy and can move with humidity, so leave it to acclimatise indoors for a few days before fixing it. Chipboard tops are light and flat but hold screws less well, so use the full set of mounting points. Plywood is stiff and light for its thickness, and a good choice for wide tops that might otherwise sag.

| Check | What to look for |
| --- | --- |
| Width | Within the frame's stated top width range |
| Depth | Within the frame's stated depth range, often 60 to 80 cm |
| Thickness | Usually 18 mm minimum; 25 mm or more for wide tops |
| Weight | Counts towards the load rating |
| Material | Stiff enough not to sag between the legs |

Desktop checks

## Tools and parts

You need the frame kit, the top, a drill driver with a low clutch setting, the correct bits, a tape measure and a pencil. A second person is needed to turn the finished desk over.

- Screws shorter than the top's thickness
- Drill driver and bits
- Tape measure and pencil
- Spirit level
- Blanket to protect the top
- A helper for turning the desk

## Assembly steps

Work on the floor with the top upside down on a blanket or the frame box to protect the finish.

1. Lay the top face down and mark its centre line.
2. Adjust the frame width so the leg feet sit evenly from each end, and centre it front to back as the manual suggests.
3. Mark screw positions through the frame's mounting holes.
4. Drill small pilot holes, using tape on the bit as a depth stop.
5. Screw the frame to the top, not over-tightening.
6. Fit the feet to the legs and tighten.
7. Fix the control box and handset, and clip all cables to the frame.
8. With a helper, turn the desk upright onto its feet.
9. Plug in and run the frame's reset procedure before first use.

Note: Check screw length before drilling. A screw longer than the top's thickness will break through the surface. Lift the finished desk with two people, as frames alone often weigh 25 kg or more.

## The first lift

Most frames need a reset before first use so the control box knows the lowest position. This usually means holding the down button until the desk reaches the bottom and stops. Our [reset guide](https://chairandposture.co.uk/blog/how-to-reset-a-standing-desk) covers common procedures. Then run the desk through its full range and listen for rubbing or uneven movement.

Check the top is level with a spirit level. Adjust the levelling feet if your floor is uneven. If the desk sways at standing height, our [wobble guide](https://chairandposture.co.uk/blog/standing-desk-wobble) explains what helps.

## Using an existing desk top

You can reuse a top from an old desk if it is within the size and thickness limits and has no old holes where the frame's screws need to go. Fill old holes or offset the frame slightly. Remove any drawers or modesty panels that would stop the frame fitting.

If you would rather skip building, our [electric standing desks guide](https://chairandposture.co.uk/best/best-electric-standing-desks) covers complete desks.

## Frequently asked questions

**Is it cheaper to build a standing desk?** It can be, especially if you reuse a top. It also lets you pick a better frame for the money.

**Can I use a kitchen worktop?** Yes, if it fits the frame's size limits and the total weight stays within the load rating. Worktops are heavy, so check the figure.

**How thick should a standing desk top be?** Most frames ask for at least 18 to 20 mm. Wider tops benefit from 25 mm or more to avoid sagging.

**Do I need to reset a new standing desk?** Most frames need a reset before first use. Check your manual.

## Buying guides on this topic

- https://chairandposture.co.uk/best/best-standing-desk-frames
- https://chairandposture.co.uk/best/best-electric-standing-desks
- https://chairandposture.co.uk/best/flexispot-standing-desks-compared