How to Install Sliding Wardrobe Doors: Step-by-Step

Sliding wardrobe systems are an excellent way to maximise usable floor space in bedrooms, alcoves, and utility areas. Whether you are building built-in storage from scratch or updating an existing cabinet frame, understanding how the underlying hardware fits together is essential. By following a structured approach to measuring, levelling, and mounting the tracks and running gear, you can achieve a smooth, quiet glide every time.

Preparation and Accurate Measuring

Before cutting any tracks or ordering door panels, you must take precise measurements of the opening. Openings in domestic properties are rarely perfectly square, so taking multiple readings is vital.

• Measure the Width: Measure the top, middle, and bottom of the opening. Use the smallest measurement if the walls taper inward, or consider packing the side jambs to create a true rectangle.
• Measure the Height: Check the height from the finished floor level to the underside of the ceiling or wardrobe top in at least three places (left, centre, and right).
• Check Plumb and Level: Use a long spirit level to check the floor, ceiling, and side walls. If the floor runs out of level significantly, fit a horizontal timber base plinth first to provide a level foundation for the bottom track.

Cutting and Fixing the Tracks

Most standard systems rely on a top guide track and a bottom load-bearing track (or a top-hung track with a bottom floor guide). When installing wardrobe sliding doors, precise track alignment prevents doors from binding or jumping out of their channels.

1. Cut the Tracks to Length: Measure the top and bottom widths carefully. Mark the aluminium tracks and cut them using a fine-toothed hacksaw or a mitre saw equipped with an aluminium cutting blade. Clean away any metal swarf or burrs with a file.
2. Fix the Top Track: Position the top track flush with the front edge of the cabinet header or ceiling opening. Pre-drill fixing holes at roughly 400 mm intervals and secure it using suitable wood screws.
3. Position the Bottom Track: Place the bottom track loosely on the floor or base panel. Do not screw it down permanently yet; you will need to plumb the door panels vertically before securing the track to ensure the doors hang straight.

Fitting Rollers and Running Gear to Door Panels

The running gear hardware must be mounted securely onto the back or edges of each door panel. Always follow the hardware manufacturer’s specified offsets for screw placement.

• Top Guide Rollers: Screw the guide brackets onto the top rear of the door panels. These spring-loaded or wheeled guides keep the door aligned inside the top channel.
• Bottom Roller Carriages: Fit the bottom rollers into the pre-routed recesses or screw-on brackets near the bottom corners. Most quality bottom rollers feature an adjustment screw that lets you raise or lower each side of the door independently.
• Dust Strips and Bumper Seals: Slide or stick pile draft excluders along the outer vertical edges of the doors to cushion the impact against side walls and keep dust out of the wardrobe interior.

Hanging and Aligning the Doors

When installing sliding wardrobe doors, install the rear-most door first, followed by the front door.

Angle the top of the rear door up into the back channel of the top track, push it upward against the spring-loaded guides, and gently lower the bottom wheels into the matching rear groove of the bottom track. Repeat the process for the front door using the front channels. Once both doors are in place, use a spirit level against the door edges. Turn the adjustment screws on the bottom rollers to raise or lower the corners until the doors sit completely plumb against the side walls. Finally, fix the bottom track permanently into position.

Adding Soft-Close Dampers

Many modern sliding systems accommodate retrofitted or integrated soft-close dampers. These units catch the door a few centimetres before the end of its travel and pull it silently into the closed position.

Mount the damper units inside the top track channels at both ends. Attach the corresponding trigger pins to the top edge of each door panel. Test the travel manually by gently sliding the door towards the jamb; adjust the trigger pin depth until the damper catches reliably without excessive resistance.

Sliding Wardrobe FAQs

How much overlap should there be between sliding doors?

A standard overlap is between 25 mm and 50 mm. This ensures there is no visible gap into the wardrobe when viewing the unit from an angle, while allowing enough clearance for handles or vertical profile grips.

Why are my sliding doors not running smoothly?

The most common causes are debris in the bottom track, incorrect roller height adjustment causing the door to drag, or the top and bottom tracks not being parallel. Clean the track groove thoroughly and check that the bottom rollers are engaging the track properly.