ᐅ KALLAX as a Room Divider in a Loft – Stability Issues!

Created on: 29 Dec 2024 17:03
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Lurineo
Hello everyone,

I am considering using an IKEA KALLAX shelving unit as a room divider in my loft. The shelving unit is very flexible and looks stylish, but I am concerned about how stable it will be in the long term, especially when placed freestanding in the middle of the room.

My specific question:

What known stability issues exist when using KALLAX shelving units as room dividers, particularly when set up freely without wall anchoring? Are there proven methods or improvements to secure the shelving against tipping and wobbling?

For a loft living space, the unit will naturally be subject to some stress, such as leaning or placing items on it – I want it to stand as securely as possible and pose no safety risk.

Thanks for your experiences and tips!
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Domau0
29 Dec 2024 19:01
Regarding the plywood: The most effective method is to glue the plywood across the entire surface using wood glue and additionally secure it to the carcass panels with short wood screws about 3-4 cm (1¼-1½ inches) long.

It is recommended to place the screws along the edges of the back panel at intervals of approximately 10-15 cm (4-6 inches), but not too close to the edge to avoid splitting.

If you are skilled with tools, you can also install small angle brackets on the inside to provide extra support for the plywood.

Important: Always pre-drill before screwing to prevent damage to the panel material.

By gluing and screwing, you achieve a uniform surface that effectively prevents twisting.
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KAULIS
29 Dec 2024 19:26
Lurineo schrieb:
The idea of stiffening the back panel sounds good, but what is the best way to attach the plywood sheet?

I can only agree with Domau0 here. Additionally: make sure the sheet is precisely cut so that there are no gaps between it and the cabinet frame. Any space could cause warping over time.

Besides using wood glue and screws for fastening, the screws should be fitted with washers to protect the material.

If possible, prepare the sheet beforehand by sanding the edges so it fits cleanly and flush.
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lisku
29 Dec 2024 19:45
Secure the plywood panels with glue and screws, period. Pay close attention to this, otherwise it will be unstable. If possible, connect multiple shelves together. This provides greater stability.
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Kinbu
30 Dec 2024 08:04
Hello Lurineo,

You’ve already received some very specific suggestions, which is great! I would like to add that stability also depends on the underlying surface. Especially with parquet flooring or smooth floors, the KALLAX can easily slide.

A non-slip underlay—whether felt pads with adhesive rubber or a special anti-slip mat—is highly recommended in such cases.

If you have pets or children, you should also consider securing it to the wall or ceiling. Better safe than sorry. 🙂
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Davidleo
30 Dec 2024 09:37
Wow, using the KALLAX as a room divider right in the middle of the loft is brilliant! 🙂 I have the same shelf myself and can confirm that you really need to reinforce it for stability.

Important: Heavy items on the bottom! I store my books on the lower shelves and plants and decorations on top, which makes the unit more stable and less likely to tip over.

Also, make sure to allow enough time to secure the back panel – that really makes a difference.

Looking forward to seeing how your project turns out!
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Elijah42
30 Dec 2024 10:12
All reinforcement tips apply. I also strongly recommend connecting the modules. Even with a 4x4 unit, individual modules can wobble due to shear forces.

Connection brackets or wooden dowels between modules significantly improve this.