How to Install a Concertina Door | Hang It Level, Latch It Firm

A concertina (accordion) door is one of the quickest ways to divide a room, close off a laundry nook, or hide a pantry — and it doesn’t require carpentry experience. The whole job takes a DIYer about an hour with basic tools: a saw, a drill, a screwdriver, and a tape measure. What matters most is getting the track perfectly centered and leaving enough clearance at the floor so the panels glide without dragging. The steps below follow the official installation guides from LTL Home Products and Pillar Products, so they match what you’ll find inside the box.

What You’ll Need Before You Start

Most concertina door kits come with the overhead track, pivot brackets, glides, screws, and the door panels themselves. You’ll also need a few tools and supplies from your workshop:

• Hacksaw or fine-tooth saw (for cutting track and door panels)
• Power drill with Phillips bit
• Tape measure and pencil
• Level
• 3/4″ flathead or track screws (included in most kits)
• Track lubricant or petroleum jelly for smooth glides

Measure Twice, Cut Once: Getting the Opening Right

Standard concertina doors are designed for an 80-inch-tall opening. If your opening is shorter, you’ll need to cut the excess off the bottom of the panels using a hacksaw. Stack the panels and cut them together so the bottom edge stays even across the whole door.

The overhead track is cut to a specific length: 1/8 inch shorter than the width of the opening. That tiny gap lets the track seat cleanly inside the jamb without bowing. Measure the opening width in three places (top, middle, bottom) — use the narrowest measurement so the track doesn’t bind.

Steps to Install a Concertina Door

The sequence matters here. Installing in the wrong order can mean unscrewing the track and starting over, so follow these steps the first time through.

1. Mount the Track with a Pivot Screw

Position the cut overhead track centered over the opening. Drive one screw through the center pre-drilled hole — this is a temporary pivot, so don’t tighten it all the way. You should be able to swing either end of the track out of the opening. This pivot method is straight from the LTL Via Folding Doors instructions and saves you from holding the whole track in the air while loading panels.

2. Slide the Top Glide Rings Into the Track

Before you fix the track permanently, slide all the top glide rings into the channel. Decide which direction the door will fold open (left-hand or right-hand) before you put them in — changing it later means unloading and reloading every glide. Each panel gets one glide ring, so count them against the number of panels in your kit.

3. Secure the Track to the Header

Rotate the track back into alignment with the opening. Using 3/4″ track screws, drive a screw through every pre-drilled perforation in the track. Use a level to check that the track is straight across its full length — a crooked track will make the door bind every time you slide it. Tighten all screws fully.

4. Hang the Door Panels

With the pivot screw still loose enough to swing one end out, pivot the track outward so you can seat each panel’s top roller into the channel. Slide the panels together near the center pivot screw. Do not force any panel — the force limit on most concertina doors is 10 kg (about 22 lbs) of vertical pressure. Excessive force can dent or break the panels.

5. Anchor the First Panel to the Jamb

Slide the entire door assembly against the non-opening side of the opening — this is the side that will stay fixed. Locate the six pre-drilled holes on the anchor panel (the end panel with no handle). Drive 3/4″ screws through the top, middle, and bottom holes to anchor the panel to the jamb. The other end of the door will remain free to open and close.

6. Install the Handle and Fixing Channels

On the closing side, insert the handle through the panel perforations and secure it with the push pins or Screws (B) included in your kit — the Pillar Products Havana instructions use pins, while other brands use small machine screws. If your model includes a separate fixing channel, align it against the jamb on the closing side and secure it evenly at top, middle, and bottom.

7. Mount the Magnetic Latch Striker

Place the magnetic latch striker plate against the metal strip built into the free edge of the door. Close the door fully so the striker plate marks the jamb where it hits. Remove the plate, drive 3/4″ flathead screws through it into the jamb at the marked spot, then test the latch. You should hear a clean “click” when the magnet engages. No click means the striker plate is misaligned — loosen it, shift it slightly, and retighten.

The One Detail Beginners Get Wrong

The most common mistake in concertina door installation is skipping the floor clearance. The door needs roughly 5mm (about 0.2 inch) of space at the bottom so it glides without scraping the floor. If you cut the panels too short, the gap looks bad; if you skip the gap entirely, the door drags and wears out the bottom guides. Test the door after hanging the first panel: if it touches the floor, trim a sliver off the bottom with the hacksaw and test again.

Comparing Concertina Door Brands and Installation Features

How to Fix a Door That Binds or Wobbles

If the door doesn’t slide smoothly after installation, check three things in order. First, ensure the track is centered over the opening — off-center tracks cause the panels to jam against one jamb as they glide. Second, lubricate the top glides with a track lubricant or a thin dab of petroleum jelly; dry glides create friction that makes the door feel heavy. Third, inspect the track for scratches or chips — even a small burr can stop a glide dead. If you find one, file it smooth with a fine metal file.

For wobble at the bottom, check that you have the correct floor clearance. Too much space and the panels swing free; too little and they drag. Adjust by adding a felt pad under the bottom guide (if your model has one) or trimming a hair off the panel bottom.

Keep the Door Running Smoothly for Years

Concertina doors need almost no maintenance, but a little care extends their life. Don’t lean anything against the panels — the lateral force can dent them permanently. Apply track lubricant once a year or whenever the door starts to sound gritty. If the magnetic latch weakens over time, the striker plate is almost always the fix: tighten it or reposition it by 1–2 mm. Avoid applying more than 10 kg (22 lbs) of vertical force to any panel; that kind of pressure can snap the hinge connectors between panels and requires a full disassembly to repair.

For most homeowners, the whole installation takes about one hour from unboxing to the first test slide. If you’re choosing between models for your project, take a look at our roundup of the best concertina doors to compare build quality, materials, and price before you buy.