ᐅ Painting a Billy Bookcase After Assembly – Best Approach?

Hello everyone, I am planning to repaint my already assembled Billy shelf to give it a more modern look. I want to achieve a smooth, durable finish that lasts a long time – not just a simple fresh coat, but one that is resistant to scratches and moisture. My question is: what are the best steps to follow for such a project? Specifically, I am interested in how to properly prepare the shelf (sanding, cleaning), whether I need to completely remove the original finish of the Billy shelf, and which type of paint is recommended (e.g., acrylic paint, polyurethane paint, spray paint). Also, do I need to apply a primer before painting, and if so, which one? Are there any experiences regarding painting directly on particleboard, or is a special intermediate layer necessary? I appreciate any detailed advice!

Hello and thank you for the detailed question, it makes advising easier. Your considerations are already very good, so I will go through them step by step:

1. Preparation: The Billy shelf typically has a melamine coating, which is smooth and very durable. Before painting, you must sand this surface, preferably with fine sandpaper (grit 180-220), so the paint adheres properly. Completely removing the coating is usually not necessary; just roughening it is enough.

2. Cleaning: After sanding, be sure to remove dust and greasy residues with a damp cloth, possibly using a special degreaser.

3. Primer: Since you are painting on melamine or particleboard, I recommend using a plastic primer or adhesion primer specifically, to help the paint stick better and prevent peeling.

4. Paint choice: For furniture, I recommend polyurethane paints or high-quality acrylic paints, as they are durable and impact-resistant. Spray paints are more suitable for smaller projects or decoration, not for large surfaces, as they often cause unevenness.

5. Application: It’s best to work with a roller or paint sprayer to achieve an even result. Let it dry in between and lightly sand.

6. Protection: Finally, a clear coat sealant can provide additional protection for the paint.

Hope this helps you for now!

Sand the melamine, apply a plastic primer, then paint with acrylic or polyurethane (PU) lacquer in 2-3 coats. Don't forget to sand lightly between coats.

In addition to the previous explanations: The melamine surface of the Billy shelf is particularly smooth and has very good abrasion resistance. Therefore, the adhesion primer is very important. A simple wood primer is not sufficient; special adhesion promoters for plastics must be used.

The preparation initially involves fine sanding (grit 220), followed by the removal of fine sanding dust and thorough cleaning with alcohol or a silicone-free cleaner. After that, applying a two-component plastic primer is recommended, as it is best suited for melamine and particleboard.

For the paint choice, a solvent-based two-component polyurethane (PU) furniture lacquer is ideal due to its hardness and scratch resistance. Water-based acrylic lacquers are an alternative but are less durable.

Finally, a matte or satin clear coat that is UV-resistant is recommended to prevent yellowing.

In summary: Good preparation, special primer, painting with a two-component lacquer, and finishing with a clear coat. This sequence ensures long-term success.

I painted my Billy last year: sanding, primer, then 2 coats of acrylic paint. It holds up well, and I didn’t use any clear coat. That was enough for me.

ju_ren schrieb:
Hält gut, aber keinen Klarlack gebraucht.

This works well, especially with light use. However, if the shelf is used more frequently or exposed to moisture, applying a clear varnish as an additional protective layer is definitely worthwhile.