ᐅ After flooding, KALLAX connections break – any solutions?

Hello everyone,

Since the last flood, I have been experiencing a serious problem with my IKEA KALLAX shelves. Due to the moisture and swelling, the joints between the individual frame components have repeatedly cracked or warped, significantly affecting the stability. I believe the main issue lies with the thin connecting plates made of particleboard or MDF.

Has anyone dealt with similar water damage to KALLAX shelves? What practical solutions are there to permanently reinforce or at least better protect these connections? I would appreciate any tips for repairing or preventive measures, as I would prefer not to replace the shelves.

Thanks in advance for your help!

When the joints fail, reinforcement is the only solution: for example, with metal angle brackets. You screw them on the inside.

Also, make sure to store the shelves in a dry place, otherwise the wood will continue to swell.

Oh yes, KALLAX and water are not friends – pretty much like me and cold coffee 😄.

Jokes aside: Your idea to reinforce the joints is excellent. I would also recommend using silicone sealant in particularly stressed areas, as it provides some protection against moisture. You can also nicely paint the metal corner brackets from Leote, so they don’t look so much like a construction site. 🙂

Regarding the technical issue: KALLAX shelves are made from pressed wood fiber materials (MDF/particleboard) with thin edge profiles. When exposed to water, the material swells and loses strength, which explains the breaking of the joints.

For the solution, I recommend:

1. Thorough drying for at least 2 weeks in a well-ventilated area
2. Removal of damaged furniture boards and replacement with dimensionally stable plywood or solid wood reinforcements
3. Strengthening the joints with metal brackets or wooden dowels, well glued with water-resistant wood glue

Be sure to use protective wood sealants to prevent further swelling.

It is pointless to replace only the damaged areas if moisture remains in the wood. Drying and protection are essential. Afterwards, reinforce or replace the fasteners.

I would like to provide a short guide on how to repair damaged KALLAX joints:

1. Remove all damaged connector plates or edges.
2. Let the furniture air dry for several days, ideally in low humidity and with good air circulation.
3. Cut new reinforcements from sturdy plywood or multiplex panels to replace the thin plates.
4. Glue them in place using waterproof wood glue and additionally secure them with small screws or brackets.
5. After drying, apply a wood preservative finish that repels moisture.

Common mistakes: drying time too short, insufficient securing of the reinforcements, and no surface treatment.