How to Repair a Cabinet Door: Step-by-Step Guide

July 31, 2026

Repairing a cabinet door generally involves the 3D readjustment of hinges, replacing defective concealed hinges, or filling stripped screw holes in the carcass.

A sagging, catching, or completely detached furniture door is a typical wear-and-tear issue. Frequent opening, the heavy weight of MDF or chipboard, and accidental overload cause screws to loosen or the base material to give way. This guide is aimed at fitters and ambitious DIYers, explaining the technical steps required to diagnose and repair cabinet doors.

Key Installation Data:

Difficulty level: Easy to medium
Time required: 10 to 30 minutes per door
Focus: Adjustment, material repair, fitting replacement

Required Tools and Materials

For a professional repair, you do not need specialist equipment, but precise hand tools are essential to avoid damaging the delicate cross-head drives of the fittings.

Cross-head screwdriver (size PZ2 for most European fittings)
Cordless screwdriver with matching bits (PZ or TX)
Wood drill bit (Ø 8 mm or 10 mm)
Wood glue and matching fluted dowels (for stripped holes)
Alternatively: stainless steel hinge repair plates
New chipboard screws (typically 4 x 16 mm or 3.5 x 15 mm)
Folding rule or calliper

Diagnosis: What Is the Exact Issue?

Before reaching for your tools, the exact source of the fault must be identified.

The door hangs crooked or rubs against the base: The hinge has settled. A readjustment of the adjustment screws is usually sufficient.
The door does not close flush: The closing angle is incorrect, or a soft-close damper is obstructing it.
The screws spin freely: The thread inside the chipboard is destroyed. The screw holes need to be rebuilt.
The hinge is broken: The fitting must be completely replaced.

Guide 1: Adjusting a Cabinet Door Precisely

If the cabinet is fitted with modern concealed hinges, alignment is carried out via the cruciform mounting plate on the carcass and the hinge arm. Much like tuning an instrument, adjusting the door gaps requires millimetre-precise turns until the door closes cleanly and smoothly.

Step 1: Height Adjustment

Slightly loosen the two vertical fixing screws on the carcass mounting plate (do not remove them completely). Now slide the door up or down by the required millimetres. Tighten the screws hand-tight again using a PZ2 screwdriver.

Step 2: Lateral Adjustment (Door Gap Alignment)

Observe the gap between two doors. If it is uneven, turn the front adjustment screw on the hinge arm.

Clockwise turn: The door moves towards the centre of the carcass (the gap becomes smaller).
Anticlockwise turn: The door moves outwards (the gap becomes larger).

Step 3: Depth Adjustment

If the door stands proud of the carcass at the top or bottom when closed, use the rear adjustment screw on the hinge arm (often an eccentric screw). Turning it moves the door towards or away from the carcass. An optimal gap between the door and carcass is around 1.5 mm to 2 mm, preventing the edges from rubbing against each other during opening.

Guide 2: Repairing Stripped Hinge Screw Holes

When chipboard screws no longer grip because the core material around the hole has crumbled, simply tightening them will not work. You need to restore the base material. There are two common and durable methods.

Method A: Drilling Out and Dowelling (The Joiner Method)

This is the sturdiest way to restore the tensile strength of the timber material.

Dismantling: Remove the door completely. Detach the mounting plate from the carcass.
Drilling out: Neatly drill out the stripped hole using a wood drill bit (e.g. 8 mm). Pay attention to the drilling depth. With a standard carcass thickness of 16 mm or 18 mm, do not drill all the way through. Use a depth stop on your drill bit.
Inserting the dowel: Apply a small amount of wood glue into the hole. Tap a matching wooden dowel (e.g. 8 x 30 mm, trimmed beforehand if necessary) flush with the surface.
Curing: Allow the glue to dry completely (at least 2 to 4 hours, depending on the type of glue).
Refitting: Position the mounting plate again, mark the centre of the dowel, and drive the chipboard screws directly into the dense dowel wood.

Method B: Using a Repair Plate (The Quick Solution)

When the material has broken away over a larger area, a stainless steel repair plate distributes the load over a wider surface.

Positioning the plate: Place the flat metal plate over the damaged area on the carcass or door.
Securing the hinge: Screw the hinge tight through the pre-tapped threaded holes in the plate.
Fixing the plate: Secure the plate to undamaged areas of the chipboard using several short screws (e.g. 3.5 x 15 mm).

Guide 3: Replacing a Concealed Hinge

If the mechanism of the hinge is bent or the internal spring is broken, a replacement part is required. When purchasing a new fitting, you must observe three technical parameters to ensure full compatibility.

1. The Cup Diameter

Measure the large recess in the cabinet door. The standard European dimension is 35 mm. On very small or lightweight doors (e.g. in bathroom cabinets), a 26 mm cup is occasionally used.

2. The Overlay Type (Cranking)

This is the most frequent mistake when buying replacement hardware. Check how the door sits against the carcass:

Full overlay: When closed, the door covers the carcass side panel almost entirely (approx. 15 to 16 mm overlay). The hinge arm is straight.
Half overlay (twin overlay): Two doors share a single central carcass divider. Each door covers only half the front edge (approx. 7 to 8 mm overlay). The hinge arm has a slight crank (bend).
Inset (internal): The door does not sit over the carcass edge but sits flush within the side panels. The hinge arm has a pronounced crank.

3. The Opening Angle

Standard doors open at an angle of 95° or 110°. For corner units or cabinets with internal drawers (where a full-extension runner is used and the door must swing completely clear of the opening), you will require wide-angle hinges with 155° or 165°.

Note for other cabinet types: If you are not working on a standard side-hung door but an upward-opening flap, standard concealed hinges are not suitable. You will need dedicated flap stays or a gas strut for heavy flaps. When replacing such stays, pay close attention to the specified rating in Newtons (e.g. 250 N); otherwise, the flap will either drop shut on its own or prove very difficult to close.

Avoiding Common Door Fitting Mistakes

Incorrect screws: Never use countersunk screws for mounting plates designed for pan-head or round-head screws. The countersunk head will expand and crack the metal eyelet of the plate.
Excessive torque: If you leave your cordless screwdriver in drill mode, you will instantly strip the screw threads in soft chipboard. Use the torque limiter (clutch) on a low setting.
Mixing soft-close and push-to-open: If you retrofit hinges with integrated soft-close damping, an existing push-to-open (tip-on) mechanism will no longer work. These systems counteract one another and must not be combined.

Occasionally, the structural core of a cabinet is so severely damaged that repairing the doors is no longer viable. When carcass side panels are swollen from moisture or repeatedly torn out, replacing the furniture fittings or upgrading individual carcass components is often the sensible course of action. When revitalising an entertainment unit, installing fresh fittings designed for a sideboard for TV or a lowboard for TV ensures clean alignment. The same applies to heavily used bedroom wardrobes; fitting heavy-duty hardware suited to a 2-person wardrobe permanently eliminates the issue of sagging doors.

Frequently Asked Questions (FAQ)

Why does my cabinet door keep springing open on its own? This is often caused by an incorrect depth adjustment. If the door is pressed too close against the carcass on the hinge side, a levering effect is created that pushes the door back open. Increase the gap to approx. 2 mm using the rear adjustment screw on the hinge arm.

Can I simply use longer screws for stripped holes? Only to a very limited extent. As carcass sides are usually only 16 mm to 19 mm thick, a significantly longer screw will inevitably break through the outer face of the cabinet panel. Use thicker screws instead (e.g. 4.5 mm instead of 3.5 mm), provided they fit through the mounting plate holes, or repair the hole with wooden dowels.

How do I retrofit soft-close damping to cabinet doors? To prevent harsh slamming when closing, you do not necessarily have to replace the entire hinge. Clip-on damper modules are available for many standard hinges. Alternatively, you can drill separate door dampers into the carcass (e.g. using a 10 mm drill bit) or mount them using surface-mount adapter housings.

Related Hardware Components for Cabinet Making

When you are already repairing or upgrading your furniture, it is worth looking into functional additions. In the kitchen, the storage space behind freshly aligned doors can be optimised with a dish drying rack for wall units. If you are working on office furniture or pedestal units, adding a desk cable tidy will keep wiring neatly organised once doors and panels are properly aligned.