ᐅ After installation on an uneven floor, my KALLAX unit never stands completely straight – is leveling possible?

PLOMA schrieb:
The first step is a precise measurement, for example using a digital level

Exactly. Without accurate measurement, it is impossible to make reliable adjustments. Additionally, check for localized unevenness in the floor, such as joints or slight waves.

If the floor is very uneven, the shelving unit should also be secured to the wall to prevent tipping. Screws or angle brackets fixed directly to the frame are simple and effective.

Materials suitable for shimming include plastic or sanded wood; these are affordable and can be adjusted by sanding.

Thanks in advance for the many helpful tips.

KUDAISY schrieb:
If you want, I can also give tips on how to additionally secure the shelf to the wall to prevent tipping.

That would be great, as I do have a wall behind it and definitely want to make sure the shelf is stable and won’t tip over.

Giagau schrieb:
As a simple solution, I would recommend furniture glides with felt pads or small washers

How stable are these solutions when moving items in and out of the shelf, for example? Don’t they come loose quickly? Or should they be glued or otherwise fixed in place?

giga59 schrieb:
That would be great since I actually have a wall behind and definitely want to make sure the shelf is secured against tipping.

Sure! Regarding wall mounting: IKEA offers special safety kits that include brackets, anchors, and screws. These are attached to the top of the shelf frame and then screwed into the wall. It’s important to use anchors suitable for your wall type (e.g. concrete, drywall).

If you have some DIY skills, you can also install angle brackets yourself, which additionally prevent the shelf from tipping forward even if it’s slightly uneven.

If you plan to upgrade the shelf feet (for example, with furniture glides), you should adjust them first and only then secure the shelf to the wall to ensure optimal stability.

Concerning securing the glides: there are models with threads that can be screwed directly into the shelf leg, or glides with adhesive that stick better. A combination of mechanical fastening and adhesive is the most reliable.

giga59 schrieb:
How stable are these solutions when moving items in and out of the shelves, for example?

I have personally experienced that simple felt pads without any attachment tend to slip after a while. A secure fastening (either screw-in furniture glides or those with threaded screws) provides lasting stability. This has worked very well for me, and I can use the shelving unit without concern—even if the floor is slightly uneven. It is really important to match the height precisely.

Adjustable furniture feet help prevent floor tipping. They are sturdy and easy to install. Alternatively, cut shims from wood or plastic.

giga59 schrieb:
How stable are such solutions when moved... don’t they come loose quickly?

That depends on the materials used. Adjustable feet with threaded connections are mechanically very secure, but with adhesive felt gliders, you should check the adhesive beforehand. In renovations and dusty environments, the adhesive wears out more quickly.

Additionally, you can secure the feet with double-sided mounting tape to prevent slipping.

Another method is to install small rivet screws or anchors in the floor for the feet to rest on – however, this is more labor-intensive and only advisable for significantly uneven floors.

If you’d like, I’m happy to help you choose suitable products if you provide the approximate unevenness in millimeters.