How to Fix Cabinet Hinges: Easy Repair & Adjustment Guide

Cabinet doors that stick, sag, or fail to close squarely are common issues in busy kitchens and utility rooms. Over time, frequent opening and the natural movement of timber and composite carcasses cause fittings to shift or work loose. Fortunately, learning how to fix cabinet hinges rarely requires specialist joinery tools or complete unit replacements. With a standard Pozi screwdriver and an understanding of modern concealed hinge mechanics, you can restore smooth, level door movement in just a few minutes.

Diagnosing the Cabinet Hinge Problem

Before adjusting any hardware, determine the underlying cause of the issue. Most cupboard faults fall into two categories: mechanical misalignment or failing fixings.

• Misaligned or Sagging Doors: The hinge mechanism is intact, but the adjustment screws have drifted, causing uneven gaps or binding against neighbouring doors.
• Stripped Screw Holes: The mounting plate or hinge cup screws turn freely without biting into the MDF or chipboard carcass.
• Worn or Damaged Components: The internal spring has snapped, the soft-close piston has failed, or the arm is bent beyond practical adjustment.

How to Adjust Concealed Cup Hinges (3-Way Adjustment)

Modern standard European concealed hinges (typically featuring a 35 mm cup) incorporate three adjustment points. Knowing which screw controls which movement makes it straightforward to fix cabinet hinges that are out of line.

1. Lateral (Side-to-Side) Adjustment

The front-most screw on the hinge arm shifts the door left or right across the face of the cabinet. Turning this screw clockwise moves the edge of the door closer to the carcass edge, while turning it anti-clockwise increases the reveal. Adjust both hinges equally to keep the door plumb.

2. Vertical (Height) Adjustment

Vertical adjustment is usually located on the mounting plate fixed to the cabinet wall. Loosen the top and bottom screws slightly, slide the door up or down to align with adjacent drawer fronts or doors, and then securely re-tighten the fixings.

3. Depth (In-and-Out) Adjustment

The rear screw on the hinge arm allows you to adjust the gap between the back of the door and the front edge of the cabinet carcass. Loosen the screw to pull the door forward or push it deeper, preventing the door from rubbing against the carcass face when opening.

Repairing Stripped Screw Holes in Chipboard

When you need to fix hinge on cabinet units where the screws have pulled completely out of the carcass wall, adjusting the mechanism will not solve the issue. Chipboard is particularly prone to blowing out around high-stress areas.

1. Use Hinge Repair Plates: Stainless steel hinge repair plates offer a durable, permanent solution. These plates fit between the carcass and the original mounting plate, bridging the damaged core and screwing into fresh, undamaged board nearby.
2. Timber Dowels and Wood Glue: Clean out the enlarged hole, fill it with a quality PVA wood adhesive, and tap in a snug hardwood dowel or matchsticks. Allow the glue to cure fully for 24 hours, trim it flush with a chisel, drill a pilot hole, and re-insert the fixing screw.

When to Replace the Hinge Mechanism

If the internal tension spring has cracked or the soft-close mechanism has lost damping resistance, it is best to replace the fitting entirely. Standard kitchen cabinets generally use 35 mm concealed hinges with either a full overlay, half overlay, or inset configuration. Measure the cup diameter and the distance between the carcass fixing holes to ensure a drop-in replacement with matching geometry.

Frequently Asked Questions

Why does my cabinet door keep dropping after adjustment?

If a door slips down repeatedly, the mounting plate screws may have stripped the internal thread of the carcass pre-drilled holes, or the adjustment lock screw is worn. Inspect the pilot holes and fit larger gauge wood screws or a hinge repair plate.

Can I replace old standard hinges with soft-close hinges?

Yes, provided the cup diameter (typically 35 mm) and mounting offset match your existing doors. Soft-close concealed hinges fit standard cabinet configurations and can be swapped directly using existing drillings.