ᐅ Is a Kallax shelf adaptable for new inserts after painting?

Created on: 15 Oct 2024 08:37
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chensusann
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chensusann
15 Oct 2024 08:37
Hello everyone,

I am considering painting my IKEA Kallax shelving unit to better match the look of my living room. One of my questions is: How adaptable does a Kallax remain after painting if I want to add new inserts later on? Specifically, I’m wondering whether the standard insert sizes still fit well or if the paint layer creates tolerances that make fitting the inserts difficult or even impossible.

Do you have any experience with whether the inserts can still be freely combined after painting, or should I know exactly which inserts I want to use permanently before painting? I am also interested in tips on the best type of paint to ensure the surface remains durable and the fit is not compromised.

Looking forward to a thorough discussion and all practical advice. Thanks!
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klo61
15 Oct 2024 09:10
Hello chensusann,

First of all, a great project with the Kallax! Your question about whether the piece of furniture remains adaptable for new inserts after painting is absolutely valid.

In general, the paint layer can be several tenths of a millimeter thick. This can make installing and removing inserts more difficult, especially with tight fittings. You should keep this in mind when planning.

My tip: If you plan to swap inserts flexibly later on, you should either apply very thin paint layers or gently sand the inside surfaces of the compartments after painting to maintain the original dimensions.

The choice of paint also matters: acrylic paints are relatively thin and flexible and work well with wood. Oil-based paints can be thicker and less flexible and are generally not recommended if flexibility is important.

In summary: yes, you can paint your Kallax and still use different inserts later, but be mindful of the tolerances added by the paint layer and work accordingly carefully.
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Dilen
15 Oct 2024 11:27
Hello chensusann,

I would like to follow up on your detailed question about the Kallax after painting:

The Kallax is designed so that the inserts are usually manufactured with very tight tolerances – they are often plug-in modules that rely solely on a mechanical fit, without any play. Painting – especially if you use a roller or brush instead of just spraying – increases the material thickness on all sides. This can easily add several tenths of a millimeter, up to about one millimeter (0.04 inches) at critical points.

An important point is also how you proceed:
- You should definitely remove all inserts before painting.
- Ideally, apply a thin primer first, followed by a thin layer of paint using a fine spray method.
- If the paint is applied too thickly, extra work may be necessary afterwards (e.g., careful sanding of the edges of the compartments).

Another factor is the moisture content of the material. Paint on wood creates a protective layer, but the dimensions can still change due to moisture influences. After painting, the wood is better protected, but this also affects inserts that fit into individual compartments.

In my experience, if you plan to change your inserts regularly, I recommend checking the measurements carefully again after painting and, if necessary, adjusting the inserts slightly, for example by gentle sanding or small corrections, so that nothing gets stuck. Alternatively, you might decide to use only one type of insert permanently and tailor the paint application accordingly.

Can you tell me which type of inserts you prefer (e.g., wood, plastic, or metal)? That could also influence the approach.
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chensusann
15 Oct 2024 12:03
Dilen schrieb:
Can you say which inserts you prefer (e.g., wood, plastic, or metal)?

Good question, Dilen. I mostly use the standard IKEA inserts from the Kallax range, so wood and some particleboard, no metal systems. The inserts are mainly meant to be organizers for small items or shelf inserts for books. I’m also considering adding some plastic boxes that are slightly adjustable in size.

I tend to keep the inside of the shelf as “neutral” as possible after painting, meaning not heavily treated, to preserve this variety. Basically, a "moderate" coat of paint that looks good but doesn’t limit flexibility.

If I understand your analysis correctly, a precise sanding process after painting is a kind of “measure” to ensure a perfect fit? That sounds a bit labor-intensive but probably necessary if you want to stay flexible.
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RENMA
16 Oct 2024 07:59
Summary regarding the question "Is Kallax adaptable for new inserts after painting?":

- The paint layer directly affects the internal dimensions of the compartments. Typical paint thickness ranges from 0.1 to 0.3 mm (0.004 to 0.01 inches) per side, but this can vary depending on the type of paint and application method.

- Especially with tight fits, this layer can already cause issues when inserting standard inserts.

- Precise sanding after painting can compensate for dimensional tolerances. A uniform final finish is essential for this.

- The type of paint is also important: a fine acrylic paint is recommended, as it tends to build up less and remains more flexible.

- For modular use, it is advisable to document the measurements carefully before painting and recheck them afterward.

Conclusion: Without rework, problems may occur. Those who want to use the inserts flexibly should plan for dimensional changes caused by paint layers and choose materials or techniques accordingly.
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gregto
16 Oct 2024 10:14
I would like to add to this, especially regarding the type of paint and surface finish.

For Kallax, I generally recommend a matte or satin finish paint that is applied thinly and protects the surface from abrasion. If you want to remain flexible with inserts, a very thin spray-painting process is preferable. The advantage of this is that the dimensions are hardly affected.
RENMA schrieb:
A uniform final finish is essential for this.

I fully agree – it is crucial to carefully inspect after painting and, if necessary, touch up with fine sandpaper.

A small tip: If you are unsure, you can first cover the shelf with white chalk or test paint, which can be easily removed again, to get a feel for the coating thickness.