Hello everyone, I have noticed that some of my Billy shelves warp noticeably shortly after assembly. The side panels no longer appear completely straight, and sometimes the shelf seems to fit crookedly into the corner. I would like to understand why this happens. Is it due to the properties of the material, humidity, or could there be certain errors during assembly that should definitely be avoided? I followed the instructions for assembly and tightened the screws by feel. It would be great if someone with experience could explain the reasons for this common warping.
Hello Raphael, warping of BILLY shelves mainly has two causes: First, the material is particleboard with a melamine coating, which is very sensitive to moisture. When humidity levels fluctuate, the dimensions can change, causing warping. Second, the assembly also plays a role: if connector screws and dowels are tightened too much or unevenly, it can strongly warp the panel. I recommend tightening the screws by hand first, aligning all parts, and then evenly tightening them. Are you sure all the back panels were installed correctly? They are very important for stability.
Parbo schrieb:
Firstly, the material is particleboard with a melamine coating, which is very sensitive to moisture. Thank you for the information! How much does humidity actually affect warping? I have assembled the shelf in the basement, where it can be more humid than in the living area. Does that have such a strong impact already?
SINTAR schrieb:
Make sure the shelf is placed in a dry location and not directly against an exterior wall. It is actually placed against an exterior wall, so maybe I combined two problem factors. Are there specific tolerances from IKEA or recommendations on how far away it should be from an exterior wall?
Hello Raphael, very good question! I’m happy to explain this again. Chipboard absorbs moisture and swells as a result. If you place the shelving unit in a damp basement or near an exterior wall with cooler air, it affects the wood-based panels. IKEA does not provide exact tolerance specifications for this, but generally, a gap of 5–10 cm (2–4 inches) from the wall should be maintained to allow air circulation and moisture to escape.
Additionally, it is important to properly fasten the back panel, as it stabilizes the shelving unit and prevents warping. The unit should also be placed on a level surface. All these factors combined influence the risk of deformation.
Additionally, it is important to properly fasten the back panel, as it stabilizes the shelving unit and prevents warping. The unit should also be placed on a level surface. All these factors combined influence the risk of deformation.
It's great that you pay attention to such details! 🙂 I once had my BILLY shelf in the basement and noticed the same thing: the sides were warped! But after I moved it to a drier room and checked the screws, everything fit together perfectly again. Just keep an eye on that, and it works really well! You can do it 😉
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