Skip to content
Home » Save Money By Installing a New UPVC Door Lock on Your Own

Save Money By Installing a New UPVC Door Lock on Your Own

UPVC (unplasticized polyvinyl chloride) doors are a popular choice for exterior doors due to their durability, weather resistance, and security. However, UPVC door locks can wear out over time. Replacing the lock yourself can save money compared to hiring a locksmith. This guide will walk you through the process of installing a new lock on a UPVC door.

Materials Needed

New multipoint lock designed for UPVC doors
Screwdriver set
Tape measure
Sandpaper (optional)
Masking tape (optional)

Step 1: Remove the Old Lock
Start by removing the interior handleset and exterior key cylinder. This will expose the screws holding the old multipoint lock in place. Use a screwdriver to remove the screws and carefully pull the lock body out of the door. Be careful not to damage the UPVC door frame.

Step 2: Enlarge the Cavity If Needed
Test fit the new lock in the door cavity. UPVC doors are designed to fit standard sized locks, but if the new lock is slightly larger, you may need to enlarge the cavity. Wrap sandpaper around a block of wood and gently sand out the cavity. Work slowly and check the fit often until the new lock slides in.

Step 3: Mark the New Screw Holes
Line up the new lock in the cavity and use a pencil to mark where the new screw holes are located. Remove the lock and use a drill to pre-drill these holes into the UPVC door frame. Go slowly to avoid cracking the door frame.

Step 4: Secure the New Lock
Insert the new lock into the cavity and align the screw holes. Use masking tape to hold the lock in position if needed. Drive the screws securely into the pre-drilled holes to anchor the lock body in place. Do not overtighten.

Step 5: Reinstall Cylinder and Handleset
Slide the new key cylinder into the exterior side of the lock. It should click into place. Next, reinstall the interior handleset by sliding it onto the spindle and securing with the set screw. Check that the handle rotations properly operate the lock cam.

Step 6: Test the New Lock
With the lock installed, test it thoroughly. Lock and unlock the door from both sides several times using the key and interior handle. Make sure the locking points engage and retract smoothly. The door should operate identical to when the original lock was new.

Tips for DIY UPVC Lock Installation

When buying a replacement lock, take the old lock to the hardware store to ensure the same fit.
Clean out old screw holes thoroughly before installing screws in the same spots.
Lubricate the lock’s interior mechanisms periodically with powdered graphite to keep the lock operating smoothly.
Alignment is critical. If screw holes do not line up, enlarged holes can compromise security.
Prevent cracking by pre-drilling screw holes and using a screwdriver with a torque limiting clutch.
Watch online tutorials for visual guidance if you get stuck during the UPVC door lock replacement process.

Replacing worn out locks on UPVC doors can be a straightforward DIY project. With the right tools and preparation, you can avoid the expense of a locksmith. Just take care not to crack or bend the UPVC frame when installing the new lock body and hardware. Thoroughly test operation once complete, and your UPVC door will once again provide reliable security.