How Much Should Sliding Wardrobe Doors Overlap?

Sliding wardrobe doors should overlap by roughly 25mm to 50mm where they meet in the middle, with 30mm to 40mm being the figure most systems are designed around. The overlap exists so there is no visible gap into the wardrobe when the doors are closed, and so the panels have somewhere to sit when one slides behind the other. Too little and you see a line of daylight into the interior. Too much and the doors block more of the opening than they need to.

The calculation is straightforward. For a two door opening, each door width equals the opening width plus the overlap, divided by two. So a 1800mm opening with a 40mm overlap needs two doors of 920mm each. For three doors, add two overlaps to the opening width and divide by three. Getting this right at the measuring stage saves a great deal of adjustment later.

Why the Overlap Exists at All

Sliding doors do not sit in the same plane. They run on separate channels within the track, one slightly in front of the other. That offset is what allows them to pass, and it is also why the meeting point needs a deliberate overlap rather than a butt join. If the panels finished flush against one another, any movement in the track, any settlement in the floor or any slight bow in a panel would open a visible gap.

The overlap also hides the edge of the rear panel. On mirrored and glass fronted doors especially, a well judged overlap conceals the frame edge and keeps the closed wardrobe reading as one clean face.

Getting the Measurements Right

Start by measuring the opening width in three places: at the floor, at mid height and at the top. Use the smallest figure. Openings in British homes are very rarely perfectly parallel, particularly in older properties, and working from the widest measurement is how people end up with doors that will not travel the full run.

Then measure the height in three places along the width and use the smallest again. Sliding systems need clearance at the top for the track and at the base for the guide channel, so check the manufacturer allowance before ordering panels.

Finally, consider the number of doors. Two doors on a wide opening means each panel is heavy and only half the interior is ever accessible at once. Three doors on the same opening are lighter, easier to move and give better access, at the cost of an extra overlap eating into the visible width. For openings above about 2400mm, three panels are usually the better arrangement. Ready built modern sliding wardrobes UK sale units come with the panel widths and overlaps already resolved, which removes this arithmetic entirely.

What Happens When the Overlap Is Wrong

Too little overlap shows itself immediately. You get a thin vertical line of shadow down the centre of the wardrobe, dust finds its way in, and the doors look as though they have been forced to fit. In bad cases the panels can pass each other without meeting properly at all, leaving the wardrobe permanently slightly open.

Too much overlap is less obvious but more irritating in daily use. Every extra millimetre of overlap is a millimetre of interior you can no longer reach when the door is slid fully open. On a wardrobe with a hanging rail running the full width, a heavy overlap can leave a section of garments awkward to get at.

There is also a visual consequence. A wide overlap creates a thick vertical band down the centre of the wardrobe front, which draws attention to the join instead of letting the doors read as a continuous surface.

Overlap on Mirrored and Glass Doors

Mirrored panels are the least forgiving. A reflection makes any misalignment at the meeting point obvious from across the room, because the two mirrors will not reflect the same thing. Aim for the upper end of the recommended overlap on mirrored doors, and take extra care that the track is dead level so the vertical edges stay parallel.

Glass panels behave similarly, with the added consideration that the edge of a glass door catches light. A slightly generous overlap keeps that edge tucked behind the front panel where it belongs. If you want the light bouncing benefit of reflection without relying on the wardrobe doors to deliver it, a separate bedroom mirrors UK piece gives you the effect with none of the alignment risk.

Track Alignment Matters as Much as Overlap

A correct overlap on a badly fitted track still looks wrong. The top track must be level along its full length and the bottom guide must sit directly beneath it. If the two are out of line, the doors lean slightly, the overlap tapers from top to bottom and the panels rub as they travel.

Check with a long level rather than a short one, and shim the track rather than forcing screws to pull it straight. On uneven floors, level the track to itself rather than to the floor, then close the gap at the base with a slim trim or fillet.

Most rollers offer a few millimetres of height adjustment. Use it to fine tune the vertical alignment at the meeting point once the doors are hung, and expect to revisit the adjustment after a few weeks of use as everything settles.

Sliding or Hinged for Your Room

Sliding doors earn their place where floor space is limited, because nothing swings out into the room. In a narrow bedroom with a bed close to the wardrobe, that can be the difference between a room that works and one that does not. The compromise is access: you can never open the whole front at once.

Hinged doors give full access to the entire interior and are simpler to fit and adjust. Where you have 600mm or more of clear floor in front of the wardrobe, a 3 door wardrobe UK with hinged fronts is often the more practical choice. Both approaches sit alongside each other in our modern wardrobes UK sale selection, and the right answer depends far more on the room than on the mechanism.

If a full bedroom refresh is on the cards, it is worth looking at the storage and the surrounding pieces together. The bedroom furniture range at Furniture in Fashion is arranged so that matching a wardrobe with a chest and bedside units is straightforward, with free delivery to most UK mainland postcodes.

A Quick Checklist Before Ordering

Measure width and height in three places each and use the smallest. Decide on two or three panels based on the opening width. Apply an overlap of 30mm to 40mm. Check the track and base clearance allowances. Confirm there is nothing on the wall face, such as a light switch or radiator pipe, that the doors will foul as they pass. Five minutes on that list prevents the most common problems entirely.

Frequently Asked Questions

Can sliding wardrobe doors overlap too much?

Yes. Excessive overlap reduces the width of interior you can reach with the door fully open and creates a heavy visual band down the centre of the wardrobe. Stay within 50mm unless the system specifies otherwise.

How do I calculate door width for three sliding doors?

Add two overlaps to the opening width, then divide by three. For a 2700mm opening with a 40mm overlap, that gives three doors of 926mm each.

Do sliding doors need a gap at the bottom?

They need a small clearance for the guide channel, typically a few millimetres. The exact figure depends on the track system, so check before cutting or ordering panels.

Why do my sliding doors not meet evenly at the top and bottom?

Almost always because the track is not level or the bottom guide is not directly under the top track. Adjust the rollers first, and if that does not correct it, recheck the track alignment.

Are sliding doors suitable for a small bedroom?

Yes, and they are often the best option, since no floor space is needed for a door to swing. The trade off is that only part of the interior is accessible at any one time.