ᐅ Kallax unstable after years despite minimal use – material defect?

Created on: 10 Apr 2021 09:27
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Dradan
Hello everyone,

I have had a Kallax shelving unit from IKEA for about 5 years, which I have used very gently and sparingly, mainly for storing lightweight items. However, I have recently noticed that the unit is becoming increasingly unstable – it wobbles, the joints seem to be loosening, and the load-bearing capacity appears to be reduced. The use has been very moderate, with no overloading or impacts.

Now I am wondering whether this could be due to a material defect or a structural weakness in the shelving unit, or if aging and environmental factors (humidity, temperature) might be playing a role.

Has anyone had similar experiences or can assess the cause of such instability after years of light use? Are there known quality issues with Kallax that develop over time?

I look forward to your insights and tips on diagnosing the cause or possible repair options.
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barda6
10 Apr 2021 12:06
Important: Check for moisture damage and loose anchors.

If the shelf was placed in a damp room, the particle board might have swollen.

Tighten screws and, if necessary, install plastic brackets for reinforcement.
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Dradan
11 Apr 2021 08:39
Thank you in advance for the helpful answers!

For context: The shelf has been placed in a relatively dry, temperature-controlled room from the start, with no direct sunlight or extreme temperature fluctuations. The floor is level.

I have checked the joints, and some screws could indeed be tightened slightly, but this had little effect on the overall stability.

A material defect could be possible if the panels are damaged on the inside – however, I do not see any external signs (no cracks or swollen areas).

What do you think about the option of replacing individual panels or adding extra reinforcements? Are there identical replacement parts for Kallax that can be used? Would this option make sense, or would it be better to replace the entire shelf?
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nubar
11 Apr 2021 09:15
Replacing individual panels in Kallax units is challenging because the system is based on prefabricated modules.

Reinforcements with brackets or additional wooden strips can help improve stability.

If the shelf still looks good visually, I recommend securing the weak points specifically with metal brackets.

Buying new should be the last option if repairs are uneconomical or technically difficult.
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bente
12 Apr 2021 16:40
Dradan schrieb:
A material defect could be possible if the panels are damaged internally – but I don’t see any visible signs on the outside

I find it really interesting how, with furniture, the internal condition can sometimes tell you more than the external appearance. Maybe the problem is truly 'invisible.'

I’m definitely keeping my fingers crossed that the issue can be resolved easily, and I think it’s great that you’re diving so deeply into this topic 🙂 Sometimes, these DIY projects end up being little success stories.
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nofomu
13 Apr 2021 10:12
Reinforcements with metal brackets or angle strips are a proven method.

Replacing individual panels is usually time-consuming and expensive.

If in doubt, buy new ones when the effort is too high or there is a risk of further weakening.