ᐅ KALLAX too small after room renovation – is it possible to shorten it?

Hello everyone,

I am currently facing the following issue and hope to get some experience or advice: I have an IKEA KALLAX shelving unit that I bought some time ago, perfectly fitting my living room. Now, after remodeling the room and slightly reducing its size, I’ve realized that the shelving unit is too wide to remain in the planned spot without affecting other furniture.

My specific question is: Is it generally possible to shorten the width of KALLAX units? I mean, can a large KALLAX shelving unit be reliably and stably reduced in size afterward without compromising its stability or appearance? I have considered cutting off side panels or shelves, but I am unsure due to the construction and materials used.

Has anyone done this before or can provide typical advice on what to watch out for? The goal is, of course, to minimize effort while not risking a fragile structure afterward. Thanks in advance!

baxterdan schrieb:
Is it generally possible to shorten KALLAX shelves in width? I mean, can I reliably and stably resize a large KALLAX shelf later on without compromising its stability or appearance?

KALLAX shelves are not really designed to be shortened, as they are made from engineered wood panels that are glued together in specific dimensions and reinforced with special strips for stability. Simply cutting the side panels will significantly affect the stability. The shelves are intended as upright modules held together by the fixed number of compartments.

If your main concern is appearance, you might be able to remove individual modules by taking the shelf apart. However, this is not without some risk of minor damage, since the panels are often firmly glued or screwed together.

If you absolutely need a narrower width, the most stable solution would probably be to buy a new, smaller KALLAX or switch to a different shelving unit with a different construction.

If you are skilled in DIY work, you can of course trim one side, but you will need to carefully seal the cut edges and restore stability with additional reinforcements—such as metal brackets or internal bracing.

In summary: Yes, it’s technically possible and more demanding than it may seem at first, but feasible for an experienced DIYer. Just without any guarantee of a perfectly stable or visually flawless result.

In short: KALLAX is not a lightweight shelving board but a compressed wood-based panel.

Cutting is only possible with saws that produce a clean cut; otherwise, it splinters heavily.

Afterwards, you should seal the cut edge with acrylic or wood filler.

Stability: The side panels are load-bearing. You will need reinforcements if you shorten them.

baxterdan schrieb:
Is it basically possible to shorten KALLAX shelves in width? I mean, can I later reduce the size of a large KALLAX shelf easily and securely without compromising stability or appearance?

Hi,

I dealt with a similar issue some time ago when I wanted to modify my KALLAX extension. The main challenge lies in the side panels’ construction – they are coated with melamine resin, which is very sensitive at the cut edges and tends to chip or tear easily if you don’t work very carefully.

Here are some steps I would consider if you feel confident about shortening it:

1. Disassemble the shelf as much as possible into individual parts (side panels, shelves, back panel). It’s best to remove the back panel completely before making any cuts.

2. Measure twice, cut with a fine jigsaw blade (ideally a very fine-toothed blade for laminate or engineered wood). Try to use a guide rail or some kind of straight edge to ensure a clean, straight cut.

3. Seal the edges – commercially available edge banding is great if you find a matching strip, alternatively you can use laminate adhesive and press on an edging strip. This requires a steady hand to avoid a messy finish.

4. You will need to replace the lost stability with additional reinforcements. I added metal corner brackets on the inside, which greatly improve stiffness. Without these reinforcements, the shelf quickly becomes unstable.

5. You can either shorten the back panel accordingly and reinstall it or omit it altogether depending on how much stability you gain from other structural elements.

Safety note: Make sure the entire structure stands securely and doesn’t tip over. KALLAX is quite stable, but a shortened shelf without a back panel or reinforcements can wobble or creak under load.

If you can’t disassemble the components cleanly, I’d recommend buying a new unit or rebuilding modularly using smaller KALLAX shelves placed side by side.

If you like, feel free to share detailed measurements and photos here – then I can offer more targeted advice. 🙂

Nathanaelk schrieb:
Sealing edges – standard edge banding works great here

I can only agree with that! And hey, too much DIY always sounds impressive at first, but once the saw is sharp, trimming actually turns into a little adventure in the furniture jungle :-)

If you decide to shorten the shelf, be sure to consider the appearance carefully after cutting. I once did a leak fix on an IKEA shelf with colorful patterned edges – in the end, it looked like a one-of-a-kind piece from a design studio.

P.S. If the shelf ends up a bit too short, it might rattle a little – then lots of felt pads under the board will help keep it steady. Good luck and don’t get discouraged!