How to Assemble a Sliding Door Wardrobe
A clear walkthrough for building a sliding door wardrobe: frame, tracks, door alignment and common mistakes, plus when a second pair of hands matters.
Sliding door wardrobes make good use of space, but they are among the more demanding flat-pack builds. The frame is large, doors are heavy and the track must be exactly level for the doors to glide. Understanding the order of work helps you decide whether to tackle it or book help.
Before you start
Check the space
Measure the room's ceiling height against the wardrobe's height, remembering that a tall wardrobe built flat can be difficult or impossible to tilt up in a low room. Check skirting boards, coving and uneven floors, as these affect where the unit sits.
Plan for two people
Large side panels and mirrored doors are heavy and awkward. A second person makes the build safer and quicker, and avoids bowed panels.
Lay out and count
Sort panels by the labels in the booklet, count fixings and check for damage. Keep mirrored or glass doors wrapped until needed.
The typical build order
- Base and sides. Fix the side panels to the base or bottom rail, using cam locks and dowels. Keep fixings loose until the frame is square.
- Top panel and fixed shelves. These give the frame rigidity. Check diagonals; equal measurements mean the frame is square.
- Internal dividers and rails. Fit hanging rails and shelves following the plan, taking care to put drawers' runners straight.
- Back panels. The thin back panels hold the structure square. Nail or fix them with the supplied pins, working from one corner and checking squareness as you go.
- Stand it up. With two people, tilt the frame upright and slide it to its final position, adjusting feet to level it.
- Tracks. Fit the top and bottom tracks. They must be parallel and clean; a dent or loose screw affects the glide.
- Doors. Hang doors on the top track first, then locate on the bottom track. Adjust the wheels so the doors are vertical and meet evenly.
Getting the doors right
Level is everything
If the wardrobe is not level, doors will drift open or catch. Use a spirit level and adjust the feet or pack shims under the base. Fix this before hanging doors.
Adjusting the wheels
Most designs have height adjustment at the top or bottom wheels. Make small changes, test the slide and repeat. If a door rubs, check that the track is straight and free of debris.
Mirrors
Mirrored panels can be heavy and fragile. Handle them with gloves where possible, lift with two people and follow the manufacturer's instructions.
Common mistakes
- Overtightening cam locks, which strips holes in chipboard.
- Fitting the back panel before the frame is square.
- Building in the wrong place so the finished wardrobe will not go upright.
- Skipping the wall fixing for tall units. See fixing a wardrobe to the wall.
- Hanging doors before levelling.
Time and cost
Allow several hours for a first-time build and expect an experienced assembler to need around two to five hours, depending on size. Costs for large sliding door units are typically higher than for simple hinged wardrobes. See how long flat-pack furniture takes and typical assembly costs.
A troubleshooting guide for doors
| Symptom | Likely cause | What to try |
|---|---|---|
| Doors roll open by themselves | Wardrobe not level | Level the feet and shim the base |
| Doors rub the frame | Frame out of square | Loosen and re-square before retightening |
| Doors jump off the track | Wheel height wrong | Adjust the wheel screws and re-hang |
| Gap between doors uneven | Wheels not matched | Adjust each door's wheels equally |
| Stiff movement | Debris in track | Wipe and clear the runner |
Mirrored doors: take extra care
Mirrored panels are heavy and unforgiving. Get a second person, use gloves, and place them against a wall with a blanket beneath. Do not bump them against metal edges when fitting the wheels. If one cracks, stop and ask the supplier for a replacement rather than trying to continue.
Working in small rooms and alcoves
Sliding wardrobes are often built in alcoves where the floor and walls are far from square. Measure the width at top, middle and bottom before you start, and check the ceiling height at both ends. If the gap varies by a few millimetres, the manufacturer's adjustment screws may cope, but anything larger may need trim panels or packing. Where the floor slopes, pack under the feet instead of tightening the frame to force it.
Tools worth having
A spirit level, a tape measure, a screwdriver with a decent bit set and a mallet cover most of the work. A second person for lifting the doors is more useful than any extra tool. For a general tool list see tools needed to assemble flat-pack furniture.
Frequently asked questions
Can one person build a sliding door wardrobe?
It is possible with patience, but tilting the frame and hanging heavy doors is far safer with two people. If alone, consider help for those stages.
Why do my doors keep sliding open?
The wardrobe is probably not level, or the track is slightly out. Check the floor, adjust the feet and recheck the track and wheels.
Do I need to fix it to the wall?
Tall wardrobes are often recommended to be secured to the wall for stability. Follow the manufacturer's instructions, and choose fixings suited to your wall type.