ᐅ After Water Damage: Has Anyone Successfully Dried Their KALLAX?

Hello everyone,

I’m currently facing a somewhat unusual problem and hope to find some experience-based advice here: After a water damage incident at my home, my IKEA KALLAX shelving unit filled with water. The shelves have absorbed a lot of moisture, some of them have swollen slightly, and I’m wondering if anyone has successfully dried their KALLAX after such damage without permanently compromising its stability or appearance.

I’m particularly interested in what methods you used (air drying, special dryers, hot air, etc.), how long the process took, and if you know any tricks to restore the material as close as possible to its original condition.

So far, I have carefully used fans and tried to keep the damp surfaces as open as possible, but I’m sure there are more targeted tips.

I would really appreciate any feedback or experiences you can share! Thanks in advance.

Kartan schrieb:
I am especially interested in which methods you used (air drying, special dryers, hot air, etc.), how long the whole process took, and if you know any tricks

Basically, it is important to act quickly with a water-damaged KALLAX shelf to limit swelling. The ideal approach is a combination of sufficient air circulation (e.g., with fans) and controlled heat (max. 40-50°C (104-122°F)) without direct heat exposure to avoid warping.

I have personally dried shelves made of engineered wood after water damage: the drying process usually takes several days up to a week, depending on the amount of moisture and indoor climate.

A very effective addition is using dehumidifiers to lower the relative humidity in the room. It is also important to place the furniture in as dry and well-ventilated areas as possible and to remove the shelves so air can reach all sides.

I would rather avoid using heat guns or hair dryers, as they can damage the surface. Patience and gentle drying are crucial here.

Fareo65 schrieb:
I would rather avoid hot air guns or hairdryers, as they can damage the surface.

I agree, no one wants a warped shelf that suddenly looks like a dreamy surfboard 😉

I once had a similar issue with a self-built wooden shelf – I simply placed it in a sunny spot, set up two fans on it, and occasionally moved it around. It was a slow process, but in the end it actually worked. Just check it regularly and, if possible, slightly disassemble the furniture.

Oh, and don’t forget: when you put everything back, leave a bit of space to allow some air circulation. This way, water won’t penetrate so easily next time. 🙂

Hello Kartan,

to answer your question thoroughly: drying KALLAX shelves after water damage is technically not complicated, but there are some important points to consider since they are made from a combination of particleboard and melamine coating.

1. Moisture absorption: The material soaks up water, causing it to swell. It is important to remove the water from the material within the first 24-48 hours, otherwise damage like blistering or delamination may occur.

2. Drying methods:
- Fans to increase air circulation are essential.
- Dehumidifiers reduce the surrounding humidity.
- Warm, but not hot air (around 30-40°C (86-104°F)) helps speed up evaporation but should be applied carefully to avoid warping the material.
- Avoid prolonged direct sunlight, as the surface may become brittle.

3. Duration: Depending on the extent of the damage and environmental conditions, the process can take 5-10 days.

4. Mechanical treatment: After drying, it can help to gently sand the surface with fine sandpaper if small waves or unevenness have formed, to make it smooth again.

Finally, I would ask: Were you able to determine how much the material has swollen? Are you continuing to use the shelf under load, or do you plan a repair or replacement? These factors decisively influence the appropriate course of action.

Noahlu schrieb:
Were you able to determine how much the material has swollen?

Thank you all for the tips so far! Fortunately, the swelling is limited; some edges on the shelves have slightly separated, but the surfaces are mostly still quite flat. The shelf isn’t currently bearing much weight—just storing lightweight items for now.

chen67 schrieb:
simply placed in a sunny spot

is difficult for me since the room gets very little direct sunlight. Also, I’m trying to keep the room as dry as possible due to possible upcoming renovation work in the apartment.

Fareo65 schrieb:
dehumidifier

is a good suggestion—I got one yesterday and it has been running since then. I’m keeping the temperature moderate to avoid damaging the shelf.

Noahlu schrieb:
Whether you plan a repair or replacement

– No decision yet, depending on whether the shelves dry out completely and remain flat. I’ll monitor over the next few days and might do some light sanding once the moisture is gone.

Do you have any advice on whether I can lift the shelves out to speed up drying, or if I should rather take the whole shelf apart? Thanks!