ᐅ Corners of Kallax units chipped – how to reinforce them?

Hello everyone,

I recently noticed that some of the corners on my Kallax shelving unit have broken off. More specifically, these are the inner edges at the joints between the individual shelf compartments. This loss of stability is frustrating, as it weakens the unit and affects its appearance.

My question is: What is the best way to reinforce these broken Kallax corners? Are there practical and discreet repair methods that will hold up over time? It is important to me to avoid fully disassembling the shelf or doing major modifications. A solution using readily available materials would be ideal.

I would appreciate any advice on repair materials, techniques, or sustainable reinforcements!

Hey,

first of all, great that you’re not just letting it go – furniture definitely deserves a second life! 🙂

For chipped Kallax corners, a combination of wood glue and reinforcing brackets or small wooden corner strips often helps. Just place them inside the corner, glue them on, and let it dry well. If the corner has really broken off, carefully use small wood screws to secure it properly.

Sometimes, attaching a wooden board to the back of the shelf with screws can also add extra stability.

Good luck! And don’t worry, it sounds worse than it actually is 😉

Apply wood glue to the break, then attach an angle bracket on the inside. Do not place screws too close to the edge.

Wesley schrieb:
Often a combination of wood glue and reinforcing brackets or small wooden corner strips.

That’s quite accurate, but I would like to add some technical details:

1. Before repairing, thoroughly clean the break area, removing dust and loose wood fibers.
2. Apply wood glue (usually PV system adhesive) generously, ensuring the joint is fully saturated.
3. For extra strength, not only metal brackets but also small wooden dowels or veneer strips glued onto the break surface are suitable.
4. Screws provide good holding power, but pre-drilling is necessary to prevent plywood from splitting.
5. If appearance is not an issue, the corner can also be reinforced with edge profiles made of aluminum or plastic.

One more important note: If the shelf load increases due to stored items, additional reinforcement of the cabinet is recommended, such as strengthening the back panel.

Hello,

I support the tips with wood glue and small brackets. An important aspect is also to clamp the repair breaks well. Use ratchet straps or bar clamps so that the glue joint cures properly and has no play.

If accessibility is an issue, it can help to insert small screws through the back panel from the inside – especially with Kallax units, where the back panel is usually just slotted in and therefore provides little stability.

Another option is to attach a thin wooden board inside as a “corner reinforcement” and fix it well with glue. This board acts like a clamp and distributes the load.

Good luck!

LISGAU45 schrieb:
How can you best stabilize these damaged Kallax corners? Are there practical and preferably discreet repair methods that will also last in the long term?

I am generally skeptical about light repairs if the load-bearing structure of the shelf is compromised.

The stability of Kallax largely depends on the structural corner joints. Simply gluing or using small brackets usually won’t prevent further damage under load in the long run.

My suggestion:

- Check if you can replace individual modules.
- Alternatively, you can reinforce the damaged corners with small, professional corner braces used in furniture construction.
- Adding a thicker back panel made of MDF, screwed in place, significantly increases overall stability.

If you want lasting stability, somewhat “invisible” repairs are difficult. Good stability usually requires some level of accessibility and possibility for intervention.

What exactly is the scenario—what is stored in the affected compartments? Heavy items or mostly decorative? This is important for the load.