How to Fix a Sagging or Misaligned Cabinet Door

A cabinet door that gaps, sags, scrapes against an adjacent door, or swings open on its own is one of the most fixable problems in a kitchen or bathroom. In most cases, the entire repair takes less than 10 minutes and requires nothing more than a Phillips screwdriver.

A cabinet door that gaps, sags, scrapes against an adjacent door, or swings open on its own is one of the most fixable problems in a kitchen or bathroom. In most cases, the entire repair takes less than 10 minutes and requires nothing more than a Phillips screwdriver. The key is understanding which type of hinge you have and which adjustment screws control which direction.

This guide covers both European concealed hinges (the adjustable cup hinges used in virtually all cabinets built since the 1990s) and traditional face-frame hinges common in older kitchens.

What You Need

• Phillips screwdriver #2 — the only tool needed for most European hinge adjustments
• Replacement European cabinet hinges — if a hinge is cracked, bent, or the soft-close mechanism has failed
• Hinge mounting screws wide-thread — for stripped screw holes in particleboard cabinet boxes
• Wood glue and toothpicks — for filling stripped hinge holes before re-driving screws
• Magnetic cabinet catches — replacement catches for doors that won’t stay shut
• Cordless drill and bit set — for removing old hinges and driving new mounting screws when replacing hinges

Identify Your Hinge Type

Before adjusting anything, confirm what type of hinge you have.

European concealed hinges (also called cup hinges, Blum hinges, or 35mm hinges) are standard in virtually all kitchen and bathroom cabinets built since the early 1990s, and in most flat-pack furniture from any era. They mount entirely on the inside of the cabinet. The cup presses into a round hole in the door back; the mounting arm clips or screws onto a plate inside the cabinet. These hinges have three adjustment directions built in.

Traditional face-frame hinges are visible from the outside and have no built-in adjustment. If you have these, fixing misalignment means shimming, bending the hinge slightly, or relocating the hinge.

Overlay vs. inset hinges. Overlay doors cover the face frame; inset doors sit flush inside the frame opening. Overlay doors have more tolerance for adjustment because the edge is covered by the door face. Inset doors must be adjusted more precisely because gaps show on all four sides.

Adjusting European Concealed Hinges

European hinges have up to three adjustment screws, each controlling a different dimension. The exact position and style of screws varies by brand (Blum, Grass, Salice, Häfele are common), but the three adjustments are consistent across all of them.

Open the door fully to access the hinge. You’ll see the mounting arm connecting the cup (in the door) to the plate (on the cabinet side). On most hinges, one screw is visible at the end of the arm closest to the door, and one or two screws are where the arm meets the mounting plate.

Side-to-Side Adjustment

This screw moves the door left or right and is the most commonly needed adjustment. It’s usually the screw at the outer end of the hinge arm — the one closest to the door when looking at the open door.

Turn clockwise to move the door toward the hinge side. Turn counterclockwise to move the door away from the hinge side.

Example: If the left edge of the door is gapping away from the cabinet frame but the right edge is hitting the adjacent door, adjust the side-to-side screw to bring the whole door leftward. Adjust top and bottom hinges in equal amounts to keep the door parallel.

Make half-turn adjustments and close the door to check the gap after each adjustment.

Up-and-Down Adjustment (Height)

On some hinges, there’s a dedicated height adjustment screw. On others, height is adjusted by loosening the two screws that hold the mounting plate to the cabinet side and physically sliding the plate up or down.

Loosening and sliding method: Use your screwdriver to loosen (but not remove) both screws on the mounting plate. Grasp the door and push it up or down to the desired position. Hold it in place and retighten the screws. This requires either a second person to hold the door, or working with one hinge at a time (leaving the other hinge attached normally to keep the door in position while you adjust).

Adjust all hinges by the same amount — moving only one hinge on a three-hinge door will twist the door.

In-and-Out Adjustment (Depth)

This controls how far the door sits from the cabinet face — whether it sticks out too far or sits recessed relative to adjacent doors. The adjustment screw is typically at the back of the mounting arm, where the arm slides into the mounting plate.

Turn clockwise to move the door outward (further from the cabinet). Turn counterclockwise to push the door inward (closer to the cabinet face).

This adjustment is most often needed when a door sticks out beyond its neighbors or when a pair of doors don’t sit flush with each other.

Fix: Stripped Hinge Screw Holes

Hinge screws in particleboard cabinet boxes (the material used in virtually all flat-pack and most factory-built cabinets) strip out more easily than in solid wood. Once stripped, the screw turns without gripping and the hinge becomes loose.

Toothpick and glue repair (best method):

1. Remove the hinge from the stripped location.
2. Clean wood dust and debris from the hole.
3. Apply a small amount of wood glue to 3–4 wooden toothpicks.
4. Insert the glue-coated toothpicks into the hole, packing it full. Break them off flush with the surface.
5. Allow the glue to cure for at least 2 hours (overnight is better for particleboard, which absorbs glue more slowly than solid wood).
6. Re-drive the original hinge screw. The glue-and-wood fill has restored solid material for the screw threads to grip.

Longer screw method (faster): Replace the stripped screw with a longer one — 1-1/4 inch instead of the original 3/4 or 1 inch. The longer screw reaches past the stripped material into fresh board. For particleboard, use wide-thread screws designed for the material; they grip far better than standard wood screws in particleboard.

Hinge plate relocation (for badly damaged areas): If the screw hole area is too damaged for either method, you can move the mounting plate up or down by 1/2 inch to reach undamaged material. The slight position shift is usually not noticeable once the door is re-hung and adjusted.

Traditional Hinges: Shimming and Adjustment

If you have traditional face-frame hinges (visible from the outside), your adjustment options are more limited because these hinges have no built-in adjustment screws.

Tighten loose screws first. Most traditional hinge problems are just loose screws. Tighten all hinge screws firmly with a manual screwdriver (feel for resistance — screws in old wood should grip). If any spin without gripping, fill the holes with toothpicks and glue as described above.

Shim a hinge to correct a sagging door. If the door sags toward the bottom on the latch side, the hinges may be mortised slightly too deep (pulling the hinge side of the door too close to the frame). Correct this by shimming the hinges outward: cut thin cardboard shims (a business card works) to fit behind the hinge leaf. Remove the hinge leaf from the face frame, place the shim in the mortise, and re-mount the hinge. The shim moves the door outward slightly, which tilts the latch side upward.

Bending the hinge. In some cases, traditional hinges can be very slightly bent to correct door alignment. This requires removing the door, supporting the hinge leaf on a flat surface, and tapping with a hammer to create or remove a small amount of bow. This is a last resort — hinge metal is tempered and can crack if bent aggressively.

Replacing a Damaged European Hinge

If a hinge is cracked, the soft-close mechanism has failed, or the cup has pulled out of the door, replacement is straightforward.

Match the specifications: Measure the cup diameter (almost always 35mm for residential cabinetry) and the overlay type (full overlay, half overlay, or inset). The overlay determines the angle the hinge opens to when the door is fully open — 110 degrees is standard for most residential cabinets. 170-degree hinges are used for corner cabinets or when full access is needed.

Bring the old hinge to the hardware store or search the back of the arm for a part number. Blum, Grass, and Salice hinges are interchangeable in many configurations, but it’s easiest to replace with the same brand and model.

Remove the old hinge cup from the door (usually held by two screws) and the mounting plate from the cabinet. The new hinge’s cup drops into the existing hole and is secured with the same screws. The new mounting plate attaches to the same locations as the old one — if the screws are stripped, use the toothpick repair.

Once installed, use the three adjustment directions to dial in the fit.

When Gaps Are Caused by a Racked Cabinet Box

If all the hinge adjustment in the world won’t bring a door into alignment — or if multiple doors across the cabinet run are all misaligned in the same direction — the cabinet box itself may be out of square.

Check by measuring the diagonal dimensions of the cabinet opening: measure corner to corner in both directions. If the measurements are not equal, the box is racked. Racking is caused by settlement, improper installation, or the cabinet fastening to an out-of-plumb wall.

Correcting a racked cabinet box involves loosening the cabinet’s fasteners to the wall, squaring the box with a clamp or strap, and re-fastening. This is more involved than hinge adjustment but is necessary for persistent alignment problems that hinge adjustments can’t cure.

Related Reading

• How to Fix a Broken Cabinet Shelf Pin
• How to Fix a Broken Drawer Slide
• How to Paint Kitchen Cabinets