ᐅ Why are the back panels coming loose on my BILLY bookshelf?

Hello everyone, I have an IKEA Billy bookshelf that I have owned for several years. I’ve noticed that the back panels are starting to come loose in several places. They seem to be detaching from the main structure and in some areas are bowing or shifting. The bookshelf has not been placed in a damp location or directly against a wall with high moisture exposure. My question is: why are the back panels coming loose on my Billy bookshelf? Has anyone else experienced this or can explain the cause? Thank you very much for your help!

Most of the time, this is due to moisture or the back panel not being properly fitted. Check if the small nails or strips are still firmly in place. If the back panel is loose, simply reattach it.

Hello Bi-da, the issue with the backing panels coming loose in BILLY shelves is quite common, especially when moisture is involved. Temperature fluctuations can also cause the material to warp and the backing to become loose. It is important to check whether the backing panel was positioned correctly during assembly and if the fastening was properly applied. Often, the backing panels are fixed only with small nails, which can loosen over time. Regularly inspecting the backing panels and securing them with appropriate nails when necessary can help. If there is moisture, it is also advisable to place the shelf in a drier location.

The back panel of the BILLY shelf is usually made of very thin particleboard or hardboard, which is quite susceptible to moisture and warping. As a result, the back panels tend to come loose when the wood swells or deforms. Additionally, they are only attached with small nails that can loosen over time. Another cause can be imprecise assembly, such as incorrect alignment or improper nailing. In such cases, it is necessary to carefully reattach the back panel, possibly using new nails or small screws to ensure long-lasting stability.

Check whether the shelf is standing on an uneven floor. This can create stress that pushes the back panel out of position. Sometimes, even a small shim under the shelf can help to fix the problem.

Thanks in advance for the quick responses! I have checked the nails and the fitting; the nails still seem to be in place, but the back panel is already showing some swelling. It almost looks like moisture has been absorbed, even though the shelf is placed in a dry living room. Can this happen due to the indoor climate? I last heated the room during winter, but it wasn’t humid. Is it possible that temperature affects the back panel?