ᐅ What to do if BILLY shelves sag under load?

In short: Reinforce with battens or a central support. Keep the weight at the bottom.

No miracle solutions, the shelves are thin. Buy replacement shelves made from thicker boards, if available.

It’s interesting to see how often reinforcements are recommended here. But honestly, is it still cost-effective or practical if you basically have to rebuild the shelf?

Maybe it’s better to choose a different shelf that is inherently more stable, rather than fixing a problem with makeshift solutions?

Are there any specific tests or long-term studies showing how long the BILLY shelves last before they fail? I suspect most users simply accept the issue and do nothing about it.

Curtis schrieb:
Is it still economical or practical if you basically have to rebuild the shelf?

I agree; it’s hardly worth it if you have to change the structure so much. BILLY is an inexpensive shelf, not a heavy-duty cabinet.

KUDAISY schrieb:
Additional center support: The easiest way to increase load capacity is to install a vertical support in the middle of the shelf.

I think the idea is okay, but honestly, it looks like a makeshift fix when you suddenly split up the shelf.

If you want something truly permanent, you might want to consider a metal shelving unit or a different brand where the shelves are more stable from the start.

BILLY is more suitable for people who don’t store heavy items or just use it for decoration.

Still, the classic “books never get lighter” is spot on. If you know the weak points, you can work around them, but it’s always a compromise.

KUDAISY schrieb:
You can, for example, screw wooden strips to the front and back underneath the shelves or use metal angle brackets.

Thanks, KUDAISY, that actually sounds like a sensible approach.

I’m also wondering if a central support might be visually impractical, since I’d like to use the shelf as a room divider.

Gofoman schrieb:
If you want something really durable, you might want to consider a metal shelving unit or a different manufacturer.

That’s true, but the BILLY is affordable, sturdy enough for lighter loads, and fits well in the room. I’m leaning toward reinforcing it with wooden strips and maybe some additional bracing on the sides without limiting the open space in the middle.

Does anyone have instructions for such side reinforcements or tips on which type of wood works best?

Also, I’m interested to know if painting or surface treatment is particularly worthwhile to visually match the strips to the shelf.

Taklo56 schrieb:
Has anyone already found instructions for such side reinforcements or tips on which wood is best suited?

Yes, I’m happy to help!

For side reinforcements, I recommend clear, dimensionally stable strips made of pine or spruce, 15x30 mm (0.6x1.2 inches) are often ideal. You can screw these to the inside edges of the shelf rails – this stiffens the side panel and provides additional support for the shelves.

Important: Pre-drill holes to prevent the wood from splitting, and use screws that are short enough so they don’t come out the front side.

Regarding the finish: Painting with a suitable white acrylic paint (like the shelf) gives a nice seamless look. Alternatively, you can use wood stain if you want to preserve the wood tone.

If you like, I can provide a detailed step-by-step guide including a materials list and tool recommendations.

This is not difficult and noticeably improves the load-bearing capacity without needing a central support.