ᐅ Why do some drawers stick in BILLY shelving units?

I recently assembled several Billy shelves from IKEA and noticed that some of the drawers stick unusually much. I am particularly interested in why this happens with some drawers but not all, even though they all seem to have been assembled the same way.

Could this be due to manufacturing tolerances of the parts, or do assembly errors play a decisive role? Maybe environmental factors such as humidity causing the wood to swell?

I would like to hear about your experiences, which causes you suspect or have confirmed, and if you have any tips on how to effectively solve this problem.

This is usually because the drawer slides are not perfectly aligned. Just check again to ensure that the rails are parallel and installed at the same height, then they will no longer stick.

Your observation is valid; there are several factors that can cause drawers to stick in BILLY shelving units.

First, manufacturing tolerances of the particleboard and the runners play a role—small deviations can result in the slide not functioning smoothly. IKEA primarily uses simple plastic runners, which can stick if slightly warped.

Assembly is also crucial: if the runners are not installed exactly parallel, at the same height, and at the correct distance, it can cause friction on the inside of the drawer or the guides themselves. Precise adjustment is therefore essential.

Another important factor is the impact of moisture over time. Wood swelling reduces the gap between the runner and the drawer body, increasing the likelihood of sticking. This can be a significant issue, especially in humid environments.

My recommendation: first, check all fastenings of the runners for exact alignment and measure if necessary. Afterwards, you can often fix the problem by lightly sanding the contact points or applying some silicone spray as a lubricant.

What I would be interested to know—is the sticking something you noticed only after extended use, or was it present from the beginning?

TEBILO schrieb:
I’m curious – did you notice if the sticking only started after extended use, or was it there from the beginning?

Thank you for the detailed reply! Actually, the drawers stick right after assembly, not after some time. I also had the impression that some drawers fit almost too tightly in the slides, while others move smoothly.

Additionally, I installed all the drawer slides at the same time but without precise measurement of the spacing. I assume this could indeed be the main issue.

What exactly do you mean by lightly sanding the contact points? Are there specific spots or parts one should watch out for?

When drawers stick, it is often due to a tight fit at the side or rear. Wooden doors and drawers sometimes expand slightly. Caution: only sand areas that lightly rub.

Silicone spray works well for this, as it significantly reduces friction.

I used to experience this quite often, and most of the time it was because I was a bit too hasty when assembling and didn’t tighten the screws on the drawer slides evenly.

Sometimes it’s just a small quirk of the shelving unit, but with a little care and patience, you can fix it. A bit of silicone spray here, a slight adjustment there – and the drawers glide smoothly like butter! 🙂

Of course, you want the result to look good as well, but don’t worry: almost everyone has had this issue with BILLY at some point.