Hardware Guide for Replacing Kitchen Doors & Drawers

Refreshing tired cabinetry by fitting new fronts is one of the most cost-effective ways to modernise a home. However, successful kitchen cabinet doors and drawers replacement depends entirely on the fittings behind the scenes. Without the correct hinges, mounting plates, and runner mechanisms, even premium fronts will sag, catch, or sit out of square. This practical guide covers the essential hardware considerations to ensure your project runs smoothly from initial measuring to final adjustment.

Choosing the Correct Concealed Hinges

Most modern UK kitchens use concealed cup hinges (often referred to as Euro-style hinges). When ordering fronts or sourcing new hardware, you must verify cup dimensions and opening angles:

• Hinge Cup Diameter and Depth: The industry standard is a 35 mm diameter cup hole drilled 11.5 mm to 12.5 mm deep. Always check that the boring pattern (the distance between screw holes beside the cup, typically 45 mm or 48 mm) matches your selected hinge.
• Crank and Overlay: Full overlay hinges sit the door fully over the cabinet carcass edge (usually covering 15–18 mm of an 18 mm carcass). Half overlay hinges are used where two doors share a single central divider. Inset hinges position the door flush inside the carcass frame.
• Opening Angle: Standard base and wall units typically use 105° or 110° hinges. Corner units, larder cupboards, or units with internal pull-out wirework often require wide-angle 155° or 165° zero-protrusion hinges to allow internal trays to slide clear.

Upgrading and Fitting Drawer Runners

A project involving replacement kitchen cabinet doors and drawers is the ideal time to upgrade standard roller runners to modern soft-close mechanisms. Selecting the right runner depends on your existing carcass depth and drawer construction:

Undermount vs. Side-Mounted Ball Bearing Runners

Undermount runners are concealed beneath the drawer box, providing a clean, professional aesthetic and excellent weight capacity. However, they require precise drawer box dimensions, specific bottom-recess clearances, and pre-drilled hook holes at the rear. Side-mounted ball bearing runners are more forgiving during retrofits, fitting directly into a standard 12.7 mm (½ inch) gap between the drawer box side and carcass wall.

Determining Runner Length

Measure the external depth of your drawer box (or the internal usable depth of the carcass), not the old drawer front. Runners typically increase in 50 mm increments (e.g., 350 mm, 400 mm, 450 mm, 500 mm). Selecting a runner too long will prevent the front from closing flush against the carcass face.

Aligning New Handles and Knobs

Proper handle positioning ties the entire renovation together. When completing a kitchen cabinet door and drawer replacement, consistency across all units is critical:

• Centre-to-Centre Hole Spacing: Standard bar and D-handles use standardised hole centres spaced in 32 mm increments (such as 96 mm, 128 mm, 160 mm, or 192 mm). Always measure between the centres of the two screw holes, not the total length of the handle.
• Drilling Templates: Use an adjustable drilling jig or construct a simple MDF template. Drilling from the front face through to the back can cause blowout on the reverse side; pressing a sacrificial block of timber firmly against the back of the panel prevents tear-out.
• Screw Lengths: Standard M4 handle screws are typically supplied at 25 mm lengths, suitable for 18 mm thick doors. For thicker shaker-style frames or 5-piece doors where the fixing passes through a joint, 30 mm to 40 mm snap-off screws may be required.

Fine-Tuning and Final Alignment

Once all fronts are mounted, use the three-way adjustment cams on the hinge arms to perfect the gaps (reveals):

1. Depth Adjustment: Moves the door in or out relative to the carcass face, ensuring the soft-close buffers engage evenly.
2. Lateral (Side) Adjustment: Shifts the door left or right to achieve equal 2–3 mm gaps between adjacent doors.
3. Height Adjustment: Loosens the mounting plate screws to level the horizontal top and bottom lines across the entire run of units.