How to Replace a UPVC Door Handle – Step-by-Step Guide

Introduction

Replacing a UPVC door handle is a straightforward repair that most homeowners can complete in under 15 minutes.

This guide walks you through the process safely and correctly.

Tools Required

• Screwdriver

• Tape measure

• Replacement handle (correct PZ and size)

Step 1: Remove the Existing Handle

1. Open the door.

2. Unscrew the fixing screws on the inside handle.

3. Remove both handle plates.

4. Remove the spindle.

Step 2: Check Measurements

Before installing the new handle, confirm:

• PZ size

• Screw centres

• Backplate length

• Door thickness

Never assume sizes are standard.

Step 3: Install the New Handle

1. Insert the spindle through the lock.

2. Position both handle plates.

3. Insert fixing screws.

4. Tighten securely (do not overtighten).

Step 4: Test the Lock

• Ensure smooth handle movement.

• Check key operation.

• Confirm door locks correctly.

If movement feels stiff, recheck alignment.

When to Replace the Multipoint Lock Instead

If the handle is fine but:

• Door won’t lock

• Key turns but no engagement

• Locking points don’t move

The issue may be the gearbox or multipoint lock, not the handle.