ᐅ KALLAX doors warped after being stored in the basement – is this normal?

Hello everyone, a few weeks ago I bought a KALLAX shelving unit from IKEA and fitted it with the matching doors. After purchasing it, I stored the furniture in the basement to set it up in the living room at a more convenient time. Now I have noticed that the doors have warped and no longer close properly. My question is: Is it normal for KALLAX doors to warp after being stored for a long time in the basement? I suspect that the indoor climate in the basement (perhaps too humid or too cold) plays a role. Has anyone had similar experiences or can explain if this behavior is typical for KALLAX doors and possibly the technical reasons behind it? I would appreciate any tips and explanations, as I would like to know whether I can return the item due to this issue or if this is considered normal.

Ikeix schrieb:
Is it normal for KALLAX doors to warp or bend after long-term storage in a basement?

KALLAX doors are generally made from MDF and have a lacquered or foil surface. MDF can swell and warp when exposed to moisture, especially if the furniture is stored in a basement with high humidity. Basements often have an unstable microclimate: fluctuations in temperature and humidity negatively affect wood-based materials such as MDF.

I recommend storing the doors in a dry, temperature-controlled room before reuse to allow the material to acclimate. Severe warping is likely due to moisture absorption, which is usually not considered a manufacturing defect but rather caused by environmental conditions.

In summary: warping after storage in a basement is a known issue and can be regarded as normal, provided there is no other mechanical damage.

RETRAVIS schrieb:
Basements often have an unstable microclimate

That’s exactly what I suspected! I once stored my KALLAX doors in an unheated garage storage room, and after a few weeks one door warped slightly. Honestly, that annoyed me quite a bit because you usually consider those doors to be quite sturdy.

Maybe it helps not to store the doors directly in the basement but in a room with a stable temperature and humidity. I find it unfortunate that such a practical piece of furniture can be so sensitive when stored in a basement. I hope you find a solution – sometimes drying and slowly acclimating the doors can help. 🙂

If the doors are warped, replace them. Storing them in a damp basement is problematic. MDF is sensitive to moisture.

Hello Ikeix,

I would like to add that MDF doors, especially for KALLAX, are not very thick and are therefore particularly sensitive to changes in humidity. Basements are unfortunately not ideal storage locations, as the humidity levels are often higher there, which can lead to warping over time.

My recommendation is to store the doors for at least 48 hours in a dry, warm room before installation, if possible. This allows the material to adjust to the environment.

If the doors are already significantly warped, the damage usually cannot be reversed. An exchange with the retailer may be possible, but there is no guarantee if external moisture is the cause.

I hope you find a suitable solution! Good luck.

Ikeix schrieb:
Is it normal for KALLAX doors to warp or bend after extended storage in the basement?

To address the issue systematically, here is a brief guide:

1. First, check the humidity level in the basement. Relative humidity above 60% can already affect MDF.

2. If possible, store the doors in a heated, dry room at 20–22°C (68–72°F) with 40–55% humidity. This minimizes the risk of further deformation.

3. Inspect the doors for cracks or bubbles on the surface, which indicate moisture damage.

4. Depending on the severity of the warping, repair is usually not possible. An exchange through IKEA is generally difficult if the storage conditions were not ideal.

5. For the future: doors and sensitive components should not be kept in unheated and damp storage areas.

Summary: Warping is quite common under these conditions but can be avoided with proper storage.