Lock Replacement

Damaged lock or a door that will not lock in Brussels? Adjustment, repair, cylinder or full mechanism replacement after assessment. Call 0495 205 400.

Google reviews
In short

A sticking lock does not necessarily need complete replacement. Janssens checks door alignment, the cylinder, lock case and locking points, then recommends adjustment, repair or replacement according to the fault found.

Illustration of a mortise lock case being replaced in the edge of a door
A faulty lock case, latch or transmission is not necessarily fixed by replacing the cylinder alone. AI-generated illustration.

Find the fault before choosing a new lock

A stiff key may indicate a cylinder problem, but the door may also have dropped or the bolt may be rubbing against its keep. Replacing the lock without checking the door can leave the problem unresolved. Describe the behaviour with the door open and closed, without forcing a mechanism that catches.

  • Door alignment problem: adjustment of the door or keep may be appropriate when the mechanism itself works.
  • Lost keys or faulty cylinder: replacing only the cylinder may be enough when the rest of the lock is compatible and sound.
  • Damaged lock case, bolts or multipoint mechanism: the affected component or mechanism may need repair or replacement.
  • After a break-in: the door, frame and fixings also need assessment. A new lock cannot repair a weakened frame.

Our door troubleshooting guide helps you describe the fault. If you are locked out, mention that door opening is needed as well; opening and replacement parts should be identified separately in the quote.

Compatibility matters more than a brand name

We check the lock format, dimensions, opening direction and locking points. For a multipoint lock, the mechanism reference and measurements matter. A photo of the faceplate on the edge of an open door helps prepare the assessment; do not dismantle the lock to take it.

The proposed hardware must suit the door, use and budget. Extra locking points alone do not establish the resistance of the complete door. Any certification must apply to the exact product and installation conditions. Share any written requirements from your insurer before ordering.

Quote, parts and final checks

Ask for travel, labour, parts, VAT and any timing supplement to be itemised. Compatibility and availability are confirmed before installation. Older or unusual parts may need ordering; any temporary securing option is assessed separately.

After the work, we check the key, handle and locking points with the door open and closed. Ask for the installed reference, the number of keys supplied and the applicable warranty terms.

Arrange an assessment

Call 0495 205 400 or use WhatsApp with your municipality, symptoms and photos of the fittings. Do not send key cuts or access codes. Janssens serves Belgium from Schaerbeek; availability, travel and timing are confirmed for your address.

Examples of interventions

Examples of interventions

Door opening
Brussels
En route
Locked out
Schaerbeek
Ongoing
Lock replacement
Waterloo
Completed
Cylinder installation
Leuven
Completed
Multipoint lock
Ixelles
Completed
Key duplication
Wavre
Completed
Vehicle opening
Etterbeek
Completed
Registered companyVAT BE0712.625.742

A selection of your reviews

Manually selected five-star Google reviews, displayed according to the available language. Reviews with one to four stars are not included in this selection.

These reviews come from our Google business listing; we do not independently verify the associated service. Read all reviews on Google for the full picture.

★★★★★
I'm very satisfied! Exceptional work, fast and good customer service! Highly recommended!
Guido T. Google reviews
★★★★★
Fast service, very helpful and managed to get my door open.
Ogulcan A. Google reviews
★★★★★
Great service. Very friendly staff. Efficient and fast. Highly recommended.
Youssef E. Google reviews
★★★★★
Great service! Many thanks for the excellent work!
Renan S. Google reviews

Frequently asked questions

Does a sticking lock always need replacement?
No. An alignment or keep problem may need adjustment; a fault limited to the cylinder may allow cylinder-only replacement. We inspect the lock case and locking points to identify the affected component.
How can I prepare a lock replacement quote?
Provide the municipality, symptoms and photos of accessible fittings without dismantling them. Mention any opening required.
Is every replacement part available on site?
Brand alone is not enough: dimensions, model and version determine compatibility. We check availability of the appropriate part. Older or unusual references may need ordering, with any temporary solution assessed separately.
Does a multipoint lock guarantee door security?
The number of locking points alone does not establish the resistance of the complete door. The door, frame, cylinder, fixings and installation also matter. Any certification must match the exact reference and installation conditions.