ᐅ How can I securely install IKEA PLATSA units on drywall partitions?

Hello everyone,

I am currently planning to install IKEA Platsa cabinets in a room with drywall partitions and am facing the challenge of how to mount these relatively heavy pieces of furniture as securely and stably as possible. I am especially interested in which fasteners and installation techniques are recommended to ensure long-lasting load capacity without damaging the drywall or putting too much stress on the cabinet walls.

Does anyone have experience with special wall anchors, reinforcement measures behind the wall, or the use of additional mounting plates? I would also like to know roughly how much weight can be safely supported on a typical drywall with standard stud framing.

Thanks in advance for your help!

Hello kinsu,

Regarding your question about securely mounting IKEA PLATSA units on drywall partitions, there are some important points to consider.

Drywall partitions are generally not designed for heavy loads, as they usually consist only of gypsum boards attached to wooden or metal studs. For heavy furniture like PLATSA, the safest method is to screw directly into the studs—the load-bearing profiles or wooden posts. Only there can the weight be properly supported.

If the position of the studs does not match the intended mounting points on the PLATSA unit, it is advisable to install additional reinforcement before assembly. For example, one or more backing panels (OSB or plywood, at least 18 mm (0.7 inches) thick) can be fixed behind the gypsum boards and attached to the wall. The furniture can then be securely screwed onto these panels.

Regarding anchors, you should avoid using regular drywall anchors for load-bearing furniture applications. Heavy-duty anchors or metal toggle bolts can help as supplements but are not sufficient on their own if there is no load-bearing substructure.

To safely support the weight of a single PLATSA unit, I would estimate no more than 20–30 kg (44–66 lbs) per mounting point on a metal or wooden stud, using at least two to three screws per cabinet panel.

Please let me know if you already have a substructure installed and how thick the wall is, so I can offer more specific advice.

Hello kinsu,

I can only agree and add that the exact position of the wall studs is crucial. I always recommend locating them with a reliable deep scanner and metal/wood detector to find the optimal points for screws.

For PLATSA, which are often modular and can have a high self-weight, using so-called heavy-duty wall anchors is also advisable if the screw cannot be placed exactly into a stud. However, this should only be a supplement, as I would not rely on anchors alone for these pieces of furniture.

Additionally, I have had good experiences with mounting rails or special steel angle brackets installed in the wall and screwed to the furniture – this helps distribute the load better and increases safety.

If the wall is very thin, check whether reinforcement is advisable, as standard drywall panels are only about 12.5mm (0.5 inches) thick and cannot bear heavy loads.

Summary and specific recommendations:

- Always fasten directly into the studs (metal or wood) whenever possible
- If stud positions vary or walls are thin: reinforce using sturdy wood or OSB panels behind the surface
- Use screws at least 5 x 60 mm (at least 3 per furniture section)
- Heavy-duty anchors only as supplementary support, not as main fasteners
- Precisely locate studs before installation using a suitable detector
- Plan for a weight capacity of about 20-30 kg (44-66 lbs) per fastening point
- Optionally use mounting rails or angle brackets to better distribute the load

This approach ensures a safe and durable fastening.

Domau0 schrieb:
If the position of the studs does not align with the intended fixing points in the PLATSA system, it is advisable to install additional reinforcement before assembly: for example, one or more reinforcement panels (OSB or plywood, at least 18 mm (3/4 inch) thick) behind the drywall surfaces, which are connected to the wall.

Thanks for the advice! The wall has a standard thickness of 12.5 mm (1/2 inch) with metal studs spaced 62.5 cm (25 inches) apart – but the PLATSA units are meant to be positioned somewhat flexibly, so I can’t always align them exactly with the studs.

What is the best way to install such a reinforcement panel? Should it be screwed behind the wall or just clamped? Is it possible to do this without fully opening up the wall? I appreciate any tips, as I do not plan a full renovation.

kinsu schrieb:
How should I best install such a reinforcement board? Is it screwed behind the wall or just clamped in?

Basically, the reinforcement board must be securely and permanently connected to the stud frame. This means you need to open the drywall and remove the plasterboard panels where you plan to attach the furniture. Then, screw OSB or plywood panels (at least 18 mm thick) directly onto the metal or timber studs. After that, the drywall is refitted or a cover is designed so the cabinet can be mounted cleanly later.

There is no reliable method to insert the reinforcement board behind the drywall just by “clamping” without opening the wall. Otherwise, the wooden board won’t support the load, increasing the risk of damage.

If you really want to avoid opening the walls, a large mounting panel on the outside of the wall can also be used to carry the furniture, but this is usually not aesthetically ideal.

If you need more tips, feel free to ask!