Fitted sliding wardrobes, the bits the showrooms don't tell you
Summary: Fitted sliding wardrobes save floor space, but they only work when the room, track system, depth, and door ratio are planned together. The showroom bit is easy; the bowed walls and parallel tracks are the real job.
A fitter once told me about a sliding-door wardrobe that arrived 1.2 cm too wide for the alcove. The opening had been measured at 2.42 m at floor height, but not at head height, where the original 1930s plaster bowed inward by just over a centimetre. The carcass went in fine. The top track wouldn't seat. They ended up planing the back edge of the top rail at midnight with a borrowed block plane, which is not in any catalogue brochure I've ever read.
Sliding wardrobes look like the easy answer. No swing clearance, clean lines, a mirror or panel to face the room. In a bedroom that's already too small they let you stand a wardrobe in front of a bed without losing 60 cm of walking space. That part is real. The rest of the story is mostly the part the showroom skips.
What the door system actually wants from you
A sliding-door wardrobe is two products bolted into one. There's the carcass behind, which holds your shelves and rails and drawers. Then there's the door system on top, which is a track at the floor and a track at the ceiling (or at the top of the carcass), with two or three door panels riding between them on rollers and guides.
The door system has opinions.
It wants the two tracks to be perfectly parallel. Out by 3 mm over a 2.4 m run and the doors run rough; out by 6 mm and they'll jam in one direction and gap at the other. It wants the top track screwed into something solid, which in a fitted wardrobe usually means a header rail running the full width above the doors, not the ceiling itself unless your joists happen to land in the right place. It wants the front face of the carcass dead flat, because the bottom track sits on it.
That's why the cheap end of the market still sells you a unit that "fits" a 1.5 to 2.5 m opening with adjustable rails and looks fine in the box but works like a stuck drawer six months in. The tracks aren't engineered for your wall. They're engineered for a tolerance.
Sliding versus hinged: when each one wins
Hinged doors are mechanically simpler. Two hinges, a magnet, done. They open fully so you see the whole interior at once, which matters more than people admit. You can stand at the wardrobe with both doors flung wide and survey everything you own. With sliders you see, at most, two-thirds of the interior at any one time, because one door panel is always covering something.
Sliders win on three things. Floor space (no swing arc, so you can put a bed or a chair right in front). Width (you can have a wardrobe 3 m wide that still opens; a hinged equivalent would need 60 cm of swing room per door). And mirror panels, which most people want bigger than a hinged door allows.
Hinged wins on visibility, on cost (track systems run 200 to 600 euros on top of the carcass), and on quiet. Even the soft-close sliders make a small thunk when they meet the dampers. Hinged doors with proper Blum hinges close silently.
If you've got a 1.8 m wide alcove against a wall with the bed parallel, hinged is fine. If you've got a 2.6 m wall opposite the bed and you want mirrored fronts, sliders.
What "fitted" actually changes
A sliding-door wardrobe sold flat-packed at a big-box store is a freestanding box. You build it, you stand it up, you slide it where you want it. There'll be a gap of a few centimetres between the top and the ceiling, and gaps at the sides, and a plinth at the bottom that's exactly 10 cm tall whether your skirting wants it that way or not.
A fitted version uses your room as the carcass. The end panels go floor to ceiling and wall to wall. The top is closed off with a header that meets the ceiling. The plinth steps over the skirting or replaces it. Inside, the same drawers and rails, but the outside is gap-free and looks built-in.
Going fitted adds about 15 to 25 percent to the panel count, because of all the scribed end pieces and the header. It also adds a measuring step. You're now matching panels to a room that probably isn't square, and 1990s new-builds are no better than 1900s terraces in this regard. I've measured a "rectangular" alcove that was 3.8 cm wider at floor than at picture rail. That gets cleaned up with a scribed filler strip down the side, but only if you knew to order one.
Cost: what you actually pay for
UK quotes for built-in wardrobe sliding doors from the chain fitters land in a wide range. I rang four firms last autumn for a 2.8 m wide alcove with three mirrored panels, internal hanging plus a five-drawer bank, and got back: Sharps at 7,400 pounds, Hammonds at 6,200, a Yorkshire local fitter at 4,100, and a Derby joiner at 3,400 with a six-week wait. The price gap is mostly door system (the chains use proprietary tracks) and brand markup.
Pre-cut materials with the same spec come in around 1,300 to 1,800 euros for a unit of that size. That's 18 mm birch ply or melamine carcass, oak or mirrored door fronts, a decent track system (Hettich or Hawa), soft-close, three drawers on Blum runners. You're paying for the parts and the cutting. Assembly is your weekend.
Where the saving comes from isn't really the labour. It's the door system. Buying a Hawa Junior or Hettich TopLine track on its own and matching it to your panels costs maybe 350 euros. The same hardware embedded in a chain-fitter quote shows up as part of a 6,000 pound line item.
Three things to decide before you order anything
The depth. Standard is 60 cm. If your hangers don't fit (some women's coats need 62 cm, some kids' clothes only need 50 cm), build the carcass to the hangers, not to the catalogue.
The track ratio. Two-door tracks let you see half the interior at a time. Three-door tracks let you see two-thirds. If you've got more than 2.4 m of width and you mostly want to dig around inside, go three doors.
Whether to fit it now or in six months. If you're moving in soon and you don't yet know what you'll store, build the carcass with adjustable shelves and one short hanging rail, leave the drawer bank for later. Most regret happens because someone designs the interior in the abstract.
If you're staring at a wall and a bed and trying to work out how the doors will run without taking out your shins, that's the kind of measure-and-build problem knuslabs.com was built around.
If you're planning the same kind of project, start with built-in closet concepts or compare it with online cabinet maker workflow. For adjacent planning detail, read What Sharps wardrobes actually cost (and why) and Shaker fitted wardrobes, and the tiny rules that make them look right.