ᐅ How can I convert Ikea Besta into a storage bench?

Hello everyone, I would like to modify my Ikea Besta cabinet to create a practical bench with storage. I am particularly interested in the following points: How can I increase the stability of the Besta so that the bench can hold weight reliably? What type of seating surface is recommended, without appearing too bulky or reducing the storage space? And which materials are best suited to achieve an attractive look without compromising functionality? I would also appreciate tips on fastening, suitable dimensions, and possible additional reinforcements. Who has experience with these kinds of modifications and can share detailed insights?

You achieve the best stability by reinforcing the legs or adding additional cross braces. For the seat surface, a thick wooden board or sturdy plywood is suitable, preferably with foam padding. Make sure to securely fasten the board with brackets or screws.

To increase stability, the Besta carcass should be additionally supported at the front with a sturdy wooden strip or metal brackets, as the original material is mainly designed for shelving purposes and does not handle point loads at seating height very well. A suitable seat surface would be a plywood board with a minimum thickness of 18 mm (0.7 inches), covered with foam padding and a durable upholstery (e.g., faux leather or linen) – this keeps the surface comfortable and easy to maintain. The board is best attached using angle brackets on the inside of the Besta to minimize loss of storage space. Finally, rubber feet or non-slip pads can be installed to protect the floor contact points.

Interesting, vinli. You wrote:

vinli schrieb:
To increase stability, the Besta cabinet frame should additionally be supported at the front with a sturdy wooden strip or metal brackets, since the original material is mainly designed for shelving purposes and does not optimally withstand point loads at seat height.

Are you making this statement generally, or do you have specific load tests to support it? I ask because many people simply tighten the Besta screws and hope it holds. Maybe a solid substructure is more effective than just reinforcing the cabinet frame. What do you all think?

Also: How does the height of the bench compare to the standard Besta? Does anything need to be adjusted to keep it ergonomic?

The assessment is based on the material properties of particleboard and the typical use of Besta as storage rather than seating furniture. Point loads, especially dynamic ones like sitting, can cause long-term stress and damage. Although there are no official load tests from Ikea for a bench function, several DIY enthusiasts in relevant online communities have reported damage when no reinforcements were installed.

Regarding ergonomics: A seat height of around 45 cm (18 inches) is considered optimal. Besta shelves usually have a height of about 38 to 40 cm (15 to 16 inches). An additional padding or useful height through upholstery can therefore be helpful to enable comfortable seating. Adjusting the legs or adding a supporting frame are possible ways to achieve this.

In addition to vinli: For the seat panel, I recommend plywood or birch plywood, as they offer high stability with relatively low weight. Additionally, brackets or metal profiles are important to better distribute the load – if possible, they should support both the front and the inside. The seat cover can be attached effectively using L-brackets, which provide both stability and easy installation. Regarding the cover: a removable cover is practical in case the bench needs cleaning.