I would like to mount a computer under a desktop made from particle board, the desktop is 1/2 inch thick, the computer plus mount weighs about 25lbs. Would the particle board hold?

How could I mount the computer to the underside of the desk and ensure it doesn't fall and break?

  • Are you sure the top is only 1/2" thick? Are you estimating or measuring? That's quite thin for a desktop and will be challenging to mount to.
    – isherwood
    Oct 23, 2018 at 19:10
  • It's 1/2" thick, just verified. Nov 6, 2018 at 14:47

3 Answers 3


While there's no problem mounting things to particle board as others have described, 1/2" is just too thin to work with. I would mount another board under your desk using construction or wood glue, at least doubling the current thickness of the top.

After that has set up for a day, I'd mount with 3/4" screws (or longer, depending on final thickness), properly piloted.

I've mounted many things to 3/4" particle board from below, including dual coat hooks that my kids have used for years. 1/2" just doesn't offer enough grab. It's likely that the screws will pull out a layer of material when it all comes crashing down.


Most of the desks in cubicles and modular furniture are made of particle board and they are able to assemble and mount things with screws, so it should not be a problem. They use special coarse thread screws that are made for particle board.

furniture screw

They make all kinds of under desk mounts - here's one:

under desk mount

The thickness of the material will limit the length of screw you can use; with thin materials, you may need to use more screws for a given task. I'd say as long as you get four screws in, you'll be safe with a 25 pound computer.

  • 2
    This sounds good, but I'd add, use the thickest screw your computer mount supports and predrill the holes before screwing. Wrap your drill bit with tape just under 1/2 inch to be sure you don't drill too far.
    – Gary Bak
    Oct 23, 2018 at 17:38
  • I agree with your answer except that you'd almost never see screws in tension into such thin material. I wouldn't trust it, even with #14 screws.
    – isherwood
    Oct 23, 2018 at 19:34

The answers are good ..just in case you still worry, you also can drill through the board and use a screw, big washer and nut to secure. My tip: if your particle board is bigger than the computer, make sure it is supported by a good structure around it, or your board will bend over time.

  • Thanks everyone, I don't feel comfortable screwing the mounts into just the particle board, I'm gonna see if I can use bolts from the top down. The tables have trim that goes over the edges, I'll see if this trim can hide the bolts. Nov 6, 2018 at 14:49

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