Guide13 minmin read·Published: 23 August 2026

How to Assemble a Wardrobe: Mistake-Free Installation

Wardrobe assembly instructions with a tool list, professional tips and safety advice. Avoid typical mistakes and decide whether DIY or an assembly service is worth it.

How to Assemble a Wardrobe: Mistake-Free Installation

You're standing in front of a flat-pack box, the screws are lying scattered on the floor and the drawing in the assembly instructions looks more like a puzzle than a help. After a move, exactly what you'd need now is often missing: space, time and a second pair of hands. Goodwardrobe assembly instructionstherefore has to do more than just show pictures of screws. It has to show you how to work safely, precisely and without unnecessary detours in a Swiss home.

The market reflects this situation. In 2022, Swiss private households spent around13.66 billion Swiss francson furniture, interior furnishings, household appliances and day-to-day housekeeping, while the furnishings retail sector generated3.72 billion francsin sales, of which2.39 billion francs with furniture. Online sales in the furnishings retail sector amounted to0.92 billion francs, more than twice as much as in 2018.Diese Schweizer Marktdatenshow why final assembly increasingly takes place only at home.

Why assembling a wardrobe often takes longer than planned

The most common mistake happens before the first screw is turned. The wardrobe is still packed up in the living room, but someone has already laid out the back panel, leaned a side panel against the wall and opened the fittings. Later, parts are missing, the wrong panel ends up at the wrong end and the carcass doesn't fit into the alcove. In an older apartment, crooked walls, uneven floors and narrow stairwells are added to the mix.

Time pressure makes the problem worse. After a move, clothes, files or dishes should disappear from the boxes as quickly as possible. If you squeeze the assembly in between two other tasks, you work without concentration and often tighten screws too early. That doesn't automatically make the carcass more stable. On the contrary, a misaligned joint can only be corrected later with additional effort.

Practical rule:First measure, sort and prepare the assembly area. Then comes the first screw.

The Swiss furniture sector has changed considerably in recent years. According to the information summarised in theUmzugsstatistik-Angebot des Bundesamts für Statistik, the moving behaviour of the permanent resident population is recorded annually. At the same time, according to the available industry figures, furniture sales fell between 2012 and 2022 from5.52 billion to 2.39 billion francs. Today, furniture is more often ordered online, delivered, replaced or reassembled in a new home. If you organise transport and assembly separately, you therefore need to check the space and access before delivery.

Ein frustrierter junger Mann betrachtet ratlos eine Montageanleitung beim Aufbau eines neuen Schranks in seinem Wohnzimmer.

Don't measure the intended alcove at just one point. Walls are rarely exactly parallel, ceilings can slope and the floor can be higher in one corner. Especially with a tall wardrobe, this preparation determines whether the carcass can be fitted and properly aligned without force. If the delivery, stairwell or room access are unclear, an earlyPlanung des Möbeltransportshelps more than improvised assembly on delivery day.

Tools and preparation before you start

A wardrobe cannot be saved by applying as much force as possible. The right preparation prevents you from damaging edges, mixing up fittings or having to dismantle the carcass halfway through. Work through the following check before you open any boxes.

Tools and work surface

For a simple shelving unit, a suitable Phillips screwdriver, an Allen key included in the delivery, a measuring tape and a spirit level are usually sufficient. For a large wardrobe with drawers, a rubber mallet, a pencil, small pliers and a cordless screwdriver with adjustable torque are also useful. The cordless screwdriver speeds up assembly, but must not drive the screws into the chipboard in an uncontrolled way.

Lay out a soft, level surface. A blanket or polystyrene sheets protect painted surfaces and edges from scratches while the carcass is being turned. Swiss assembly guides also recommend working as close as possible to the final location, so that the finished piece of furniture no longer has to be pushed through narrow doorways or across delicate floors.Die Hinweise zur Schrankmontage auf einer weichen Flächeare particularly relevant in practice with heavy carcasses.

Eine Infografik mit vier Schritten zur Vorbereitung und den benötigten Werkzeugen für einen erfolgreichen Schrankaufbau.

Check space and parts

Plan for a clear assembly area where all side panels can lie flat. Doors, back panels and drawer fronts must not disappear beneath other panels. Also keep the later pivoting path clear. A carcass may fit on the floor and still hit the ceiling, a lamp or a window sill when being stood upright.

Then sort each fitting according to the fittings list. Group identical screws together without mixing the groups. Check:

  • Panels:Do the quantity, side, top edge and drilling pattern match the drawing?
  • Fittings:Are the bolts, dowels, cam locks, hinges, screws and nails all there?
  • Tools:Does the screwdriver fit the screw head exactly, and is the spirit level to hand?
  • Assembly location:Is the floor clean, level and free of cardboard boxes or tools lying around?
  • Access:Can the finished carcass be stood upright without touching the wall or ceiling?

TheSchweizer Montageanleitung für einen dreitürigen Schrankrecommends checking all fittings and parts against the list before starting and following the specified sequence. That sounds trivial, but it prevents most abandoned assembly attempts.

The actual assembly process for the carcass and fronts

With a three-door wardrobe, assembly does not begin by pushing large panels together, but with the side panels. First check the visible and hidden edges. The drill holes for hinges, centre panels and plinth show you which part belongs on the left and which on the right. Bolts and dowels go into the holes provided. A Swiss set of instructions names screwing the bolts into the side panels as the first assembly step.

Work through the drawing in its given order. Manufacturers do not arrange the steps at random. A connection that will later be covered by a centre panel may have to be fitted beforehand. With special connection systems, hangers or mounting plates must also be fitted before the carcass is closed.

Join the carcass without tension

Lay one side panel on the prepared surface and position the bottom, top and centre panel. Bring the parts together straight, without forcing them with a hammer. Initially tighten connections only enough to hold the components in place. Only once all the panels are seated and the diagonals are correct should you tighten everything fully.

The back panel stabilises the carcass, but it is not a tool for pulling it straight. If the back panel sits in only one corner, the carcass is usually out of true. Align the components, check that the shape is square and then fasten the back panel according to the instructions. Small nails or screws belong in the designated positions. If you drive them in while the panel is under tension, the edge can break out.

With rows of holes, accuracy counts. A Swiss assembly guide specifies for certain drill holes adrill bit with a 4.5-millimetre diameterThat is no arbitrary recommendation. A larger hole can leave the fitting sitting loose, while a smaller hole can split the material or cause the joint to jam.Die Anleitung zu Korpus und Boxshows just how closely the right tool and a precise fit are linked.

Eine illustrierte Anleitung in vier Schritten zum Aufbau eines Schranks mit Holzteilen, Schrauben und Scharnieren.

Back panel, doors and recess

Once the back panel is fixed in place, carefully stand the carcass upright. Work with a second person, especially with tall or wide wardrobes. Doors should only be attached to the carcass once it is standing securely and is properly aligned. Insert the hinges into the pre-milled recesses, fasten the mounting plates and only then adjust the fronts. A door that hangs crooked when first mounted is not necessarily damaged. Often it is simply a matter of adjusting the hinges.

In a recess, measure the width, depth and height at several points. The Swiss rule of thumb is to measure the recessat three points per axisAlso allow forat least 2 cm of clearance to the wall and ceilingso that the carcass can be manoeuvred in and aligned.Die Hinweise zum Einbauschrank in Schweizer Wohnungenare particularly helpful in older buildings, where wall and ceiling surfaces are rarely perfectly straight.

Once upright, check the relevant edges with a spirit level. Don't just wedge something underneath as a makeshift fix – use the adjustable feet supplied by the manufacturer or a suitable levelling solution. Only when the carcass stands stable and plumb should you fine-tune the doors, drawers and interior fittings.

Typical mistakes and how to spot them immediately

A wardrobe can be fully screwed together and still not work properly. That's why you should check after every major assembly step whether the back panel, carcass, doors and fittings are correctly positioned. In an older flat, uneven floors and walls often only become apparent when the fronts go on.

The five most common early mistakes

The back panel is the wrong way round.An unexpected overhang, covered drill holes or a back panel sitting outside the groove all give the mistake away. Undo the fastening, check the orientation and align the panel before adding further nails or screws.

The carcass is out of square.Doors don't run parallel, gaps change and one corner of the back panel sticks out. Often the carcass is resting on an uneven surface or the connections were tightened too early. Lay it on a level, soft surface, loosen the connections slightly and realign it.

The screws are overtightened.With chipboard, edges can break out, fittings can be pressed into the surface and threads can lose their grip. Tighten hand-tight first, then check the fit. A cordless screwdriver set to low torque gives you more control than full power.

Eine Anleitung für typische Fehler bei der Schrankmontage mit Lösungsvorschlägen für einen korrekten und stabilen Möbelaufbau.

The doors don't close.Uneven gaps, rubbing fronts or inconsistent spacing usually result from a carcass that isn't properly aligned or from incorrectly adjusted hinges. Check the carcass first, then adjust the hinges individually. Only ever change one screw at a time so that you can see the effect clearly.

A fitting doesn't fit.If a bolt, cam or dowel only goes in under pressure, check the part number, the drilling pattern and which side of the panel you're working on. Force damages both the hole and the fitting. Especially with replacement deliveries, it's worth comparing against the fittings list.

When you should stop

A cracked panel, an incorrectly supplied fitting or a damaged drill hole is a clear reason to stop. Photograph the condition, keep the packaging and the fittings list, and note which assembly step was affected. In Switzerland, movable goods are generally covered by atwo-year warranty period.Die Serviceinformationen von IKEA Schweizalso place assembly and furniture services in this same context.

The deadline does not replace a careful inspection. Damage caused by improper assembly can make a complaint more difficult. So do not continue using the furniture until the cause has been identified. With a tall wardrobe, an unfamiliar wall in an older building or recurring fitting problems, professional assembly is often the more sensible choice.

Safety and the decision to hire professionals

A tall wardrobe belongs fixed to the wall, especially with heavy doors, children in the household or uneven floors. The anti-tip device prevents the furniture from tipping forward when loaded. In an older apartment, it is not only the height of the wardrobe that matters, but also whether the wall and floor allow proper alignment.

Place the wardrobe in its intended spot and push it up against the wall. With the systems described in the Swiss assembly instructions, the grub screw inside the unit is then tightened. Afterwards, check all screws and the function of the anti-tip device.Die Anleitung zur Kippsicherungexplicitly describes this checking step.

The right fixing depends on the wall. Concrete, solid brick, hollow brick, aerated concrete and drywall require different plugs and screws. With an unfamiliar wall in an older building, a specialist should assess where a secure anchor can be made. Before drilling, it must also be clear whether electrical or water lines run through the drilling area.

Many accidents happen during DIY work, particularly due to falls. ThePräventionshinweise der Suva zum Heimwerkenshow why protection, secure footing and preparation are part of assembly.

DIY or assembly service

Self-assembly is suitable for a small, lightweight wardrobe with a manageable set of fittings and easy access. A professional is the better choice when the carcass is heavy, very tall, custom-made or located in a narrow niche. Missing tools, a narrow stairwell, an uncertain wall or an upcoming move also speak in favour of getting support.

Criterion Self-assembly Assembly service
Costs No separate assembly fee, but your own time and tools required The service price depends on the provider and the scope of services
Complexity Suitable for simple carcasses with clear instructions Advisable for heavy wardrobes, many fronts or difficult alignment
Safety You are responsible for wall fixing, lifting and tools yourself The assembly team handles the build and the stability check
Time Flexible, but hard to plan without experience One provider quotes for a two-person team from ZurichCHF 199 per hour. TheKostenübersicht für Möbelaufbaushows how differently assembly prices are calculated in Switzerland
Living situation Good with open space and straightforward access Advantageous in older buildings, narrow stairwells, during a move or when time is short

Prices are for comparison only and are not a binding quote. Clarify in advance whether transport, carrying, wall fixing and packaging disposal are included. If you have to lift a tall carcass on your own, DIY does not automatically save you money. With an uncertain wall in an older building or a piece of furniture that only fits by force, assembly should stop and be assessed by a specialist.

Your next step after assembly

A wardrobe is only finished when it can be used reliably in everyday life. Check all screws without blindly tightening them. Check whether the drawers run straight, the doors open freely and the anti-tip device is firmly in place. Then align the carcass once more with the spirit level and only remove protective films when no further adjustments are needed.

In the first few weeks, a quick check after filling the wardrobe is worthwhile. Weight changes the load on shelves, drawers and hinges. If a front drops or a joint develops play, readjust it early rather than letting the problem grow until the next move.

If the wardrobe doesn't fit into the alcove, if the wall mounting remains unclear or if you don't have a second person to help, professional assembly is the more sensible choice. For further room planning, for example after a renovation, theRenovierung Schlafzimmer Anleitungfrom Bickel & Sohn Interior Design offers additional guidance on sequence and design.

Old furniture shouldn't simply be left in the hallway. Before replacing it, clarify whether the piece should be transported, passed on or disposed of properly. Information onEntsorgung von Möbelnhelps you plan this final step right from the start.

If you assemble the wardrobe yourself, work with a parts list, a soft surface, the correct sequence and a final safety check. If transport, carrying and assembly all come together, you can arrange delivery directly into the room and optional furniture assembly withTIXPI. Before booking, check the transparent price and provide full details of the alcove, floor, wall mounting and your preferred assembly date.

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