ᐅ KALLAX placed on a stone floor – is it necessary to use a base or padding underneath?

Hello everyone, I am currently planning to place a KALLAX shelf from IKEA directly on my stone floor in the living room. I am wondering if it is necessary to use some kind of underlay to protect the floor or the furniture itself, or if the KALLAX can be placed directly on the floor without anything in between without causing damage or affecting its stability. Does anyone have experience with this, especially on smooth stone floors? I know that for some furniture pieces, felt pads are recommended, but I don’t want to give a general recommendation without knowing if it is really necessary in this case or if the KALLAX’s construction prevents any issues. Thank you very much for any helpful answers!

Good question, Jafiix. I doubt that you necessarily need to put something under the KALLAX since it doesn’t have feet but a continuous base plate. However, I would check how smooth the stone floor is and whether it might be slippery. The stability could be affected if the shelf stands on a particularly smooth stone surface, especially when loaded. You also ask if the floor could be damaged — here, it would be important to look more closely at the edges of the KALLAX. Are they rounded or rather sharp? Hard edges could scratch the stone, especially if there is some moisture or abrasion involved. So, in short: slipping and scratching risks would be my main concerns. Have you tried placing the shelf there temporarily to see if it slips?

Hello Jafiix, I can say from personal experience that when placing a KALLAX on a stone floor, an underlay is definitely recommended, but not necessarily felt—it’s better to use something rubberized or non-slip mats. The shelf unit has a continuous base that distributes weight well, but it can easily slide due to moisture or dust particles. Especially if you have children or pets, movement could pose a safety risk. Additionally, an underlay protects the stone floor from micro-scratches that can develop over time. A simple rug or rubber pads under the corners can help a lot. Just make sure the underlay isn’t too thick, so the shelf doesn’t wobble.

Hello everyone, I would like to explore this topic in more detail, as there are several relevant aspects to consider when placing a KALLAX shelf unit directly on a stone floor.

First, the material properties of the stone floor: stone is generally hard but often somewhat porous – this can vary depending on the type of stone and its sealant. While placing the KALLAX directly on the floor does not pose an immediate risk of scratching, uneven pressure along the edges and point loads (e.g., from heavy items on the shelf) can cause fine cracks or dents. Additionally, the surface is often smooth, which increases the risk of slipping.

As mentioned, the KALLAX does not have individual feet but stands on a continuous base panel. This design helps to distribute pressure evenly and avoid pressure points, but it is also important to check whether the base panel is sufficiently level to prevent wobbling or imbalance.

In my experience, depending on the location, a soft rubber or high-quality felt underlay works best. These underlays offer several advantages:
1. Prevent slipping due to good grip
2. Protect the floor surface from scratches and pressure marks
3. Compensate for minor unevenness

If the stone floor has already been treated with a non-slip sealant, using an underlay might not be necessary, but this is rather uncommon.

I’m interested to know: How long do you plan to keep the shelf there, and will it be heavily loaded? Also, is the floor completely level, or are there minor uneven spots?

Hector schrieb:
Good question, Jafiix. I doubt that the KALLAX absolutely needs a base – after all, it doesn’t have legs but a continuous bottom panel.

You’re right, the bottom panel is continuous; however, the edges are somewhat sharp, which made me concerned about scratches and pressure marks on the stone floor.

Surela schrieb:
How long do you plan to keep the shelf there, and will it bear a lot of weight? Also, is the floor completely level or are there slight irregularities?

Thanks for your detailed analysis! The shelf is intended to remain permanently and will be loaded with several books and decorative items, so it will be under medium to heavy load. The floor is mostly level, but there are minor uneven spots in one or two places.

Charles schrieb:
For a KALLAX on a stone floor, some kind of base is definitely recommended, though it doesn’t necessarily have to be felt [...].

Specifically, I’m wondering if a thin felt pad would be sufficient or if it’s better to use rubberized anti-slip pads? Or are there other materials you would recommend? Thanks very much for your advice!

Hello Jafiix, I think you have clearly defined your question, which makes it much easier to give advice.

From my experience as someone who has several shelves standing on stone flooring, I can say that I always use protective pads, especially when the furniture will remain in place for a long time and is loaded. It’s not only about protecting the floor but also about the durability of the furniture.

Sometimes you get used to the current condition and only notice scratches or pressure marks once they accumulate. I understand the wish to keep things as “minimalistic” as possible without any additions, but with an almost invisible felt pad, you will feel much safer afterward.

Alternatively, I have also used rubber adhesive pads with friends, which work similarly well without being slippery. I would definitely recommend using something to avoid unpleasant surprises with the floor later or the shelf becoming unstable. I wish you the best of luck!