ᐅ My Kallax unit wobbles on the carpet – how can I stabilize it?

Hello everyone, I recently bought a Kallax shelf from Ikea and wanted to place it directly on the carpet in my living room. Unfortunately, the shelf wobbles quite a bit and tilts on one side, which is not only annoying but also raises concerns about its stability. The carpet itself is quite thick and has a rather uneven surface.

My question to you is: What practical and long-lasting solutions are there to level the wobbling or tilting of a Kallax unit on a thick carpeted floor? I prefer not to make major modifications to the furniture but rather small, reversible adjustments that also look acceptable. Has anyone had experience with this? Thanks in advance for your tips!

Hello KEENAN, the wobbling of a Kallax on a thick carpet is a very common issue because the feet of the shelf are usually not designed for soft surfaces. The carpet compresses unevenly, causing one side to sink more than the other.

A proven method is to attach small leveling pads or furniture glides made of firm material (e.g., felt, hard plastic, or cork) under the feet, either glued or screwed on. This increases the contact area and makes the furniture stand more stably. It is important that all the pads have the same thickness.

Another option is to place small wooden wedges or cut pieces of felt under the feet. You can sand or trim these until the shelf stands firmly. The advantage here is that it is reversible and does not damage the furniture.

I would also suggest checking whether you can use a thinner carpet underlay or possibly place a hard base under the shelf (e.g., a thin wooden board). This will distribute the weight more evenly.

If you like, I can provide more tips, especially about which materials work best with carpets. 🙂

Lenfa schrieb:
A proven method is to attach small leveling pads or furniture glides made of firm material (e.g., felt, hard plastic, or cork), which are either glued or screwed under the feet.

I can definitely confirm that. I have my Kallax standing on a relatively thick carpet and solved the issue like this:

1. First, clean all the feet thoroughly so that adhesive pads stick properly.
2. Then cut pads to the appropriate thickness depending on how much wobbling there is. I like to use self-adhesive felt furniture glides, which come in different thicknesses.
3. For stronger unevenness, it helps to glue several felt layers on top of each other—best with superglue to prevent shifting.
4. If that’s still not enough, you can cut a small wooden board (plywood or MDF) the size of the furniture feet. The pads go on top of the board, then the entire Kallax is placed on it.

Common mistakes are:
- Attaching pads only on one foot (always treat all feet equally!)
- Using pads that are too thin and don’t compensate for the problem

In summary: pads on all four feet and optionally using a solid board as a base make the furniture very stable.

Good luck with that!

klo40 schrieb:
Pads under all four legs and the option to additionally use a solid board as a base make the setup very stable.

Thank you for the detailed response. The idea of a small wooden board sounds interesting. What would be the best material for such a base? I was thinking of something very flat, maybe a maximum of 1 cm (0.4 inches) thick, since I don’t want the clearance underneath to be too high.

I’m also curious how well a wooden board would work on a high-pile carpet – I’m worried the board might wobble on the carpet itself or even sink into the pile due to the weight. Do you have any experience with this? Or would another base, like a thin rubber or plastic sheet, be more suitable?

KEENAN schrieb:
What would be best suited as a base for something like this? I was thinking of something very flat, maybe max. 1 cm thick, because I don’t want the ground clearance underneath to be too high.

I can relate to your situation well; I had something similar with an Expedit module (which is essentially the same as Kallax). I also wanted to avoid a base that was too thick, since I didn’t want the shelf to sit too high visually.

In the end, I used a thin plywood board (about 8 mm (0.3 inches)) combined with self-adhesive anti-slip pads under the four corners of the shelf. This works very well because the board distributes the weight better, and the pads prevent slipping.

If the carpet pile is very high, I initially worried the board might sink in, but the weight keeps it stable. I even placed very thin foam rubber strips under the board on the carpet to slightly increase the pressure area and reduce sinking – that worked perfectly.

What I would recommend is to start by testing a thin wooden board or a plastic sheet combined with pads or small felt glides under the feet. This often provides very good stability without damaging or altering the furniture.

Hope this helps! It’s not a big project but really adds to the comfort – good luck! 🙂