ᐅ What modifications can I make to BILLY shelves to improve their stability?

I would simply recommend not building the shelves higher than 180 cm (71 inches), as the stability of BILLY decreases above this height. Additionally, heavy loads should be stored at the bottom to keep the shelf’s center of gravity low.

To improve the stability of BILLY shelves, I recommend a combination of wall mounting and internal reinforcement. It is important to first identify the type of wall in order to select the appropriate anchors, as special cavity anchors are required for drywall or hollow walls to properly distribute the load.

A step-by-step approach could be as follows:
1. Assemble and align the shelf
2. Secure the back panel with stronger screws or even replace it with a 6 mm (1/4 inch) thick plywood sheet
3. Attach the shelf to the wall at the top and at least two points (top and middle)
4. Install internal metal brackets to support the shelves and prevent lateral twisting
5. Attach non-slip pads to the feet to prevent slipping

Common mistakes include choosing anchors that are too coarse or missing middle fixings, which can lead to instability.

sinhau schrieb:
Attach the shelf at the top and at least at two points (top and middle) on the wall\

Thank you, that sounds very reasonable. I have a drywall and wonder: Is it enough to fix the shelf using cavity anchors, or should I additionally screw a wooden batten behind the shelf, which is then anchored to the wall? Which option provides better stability?

Ponelo schrieb:
I have a drywall and wonder: Is it enough to fix the shelf with cavity anchors, or should I also screw a wooden batten behind the shelf, which is then anchored to the wall?

That’s a very good question. For drywall, cavity anchors are generally fine if they are properly sized and you can fasten them to solid points (e.g., studs behind the wall). However, adding a wooden batten behind the shelf provides a larger surface area and distributes the load more effectively. You can secure the batten with several anchors, which increases the overall stability.

In practical terms, the wooden batten acts like a sturdy bridge between the shelf and the wall. Additionally, you can screw the shelf directly onto it, which offers more support than just using metal brackets.

kulau schrieb:
You can secure the batten with several dowels, which increases overall stability.

I agree, but you should first check whether attaching the batten might cause the shelf to warp if the shelf itself is not perfectly straight. I would therefore first verify the flatness and then measure whether the batten is properly leveled. Otherwise, it’s a waste of effort.