Locked Out

Slammed your door with keys inside? Don't panic! Availability, arrival time and price are confirmed by phone; non-destructive methods are preferred when the mechanism allows.

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In short

Locked Out in Brussels or Brabant? Janssens is available 24/7; arrival time and price are confirmed by phone. Non-destructive methods are preferred when the mechanism allows — 0495 205 400.

Janssens locksmith during a night emergency call-out in Brussels

Fast intervention

Arrival subject to availability confirmed by phone

The technician closest to your location is dispatched as a priority. No call center: you speak directly to the locksmith who will handle your job.

Method adapted to the lock

Bypass, lock picking, decoding: our technicians master all three non-destructive opening methods. Cylinder drilling is only used as a last resort, with your prior approval.

Available 24/7

24/7 availability, confirmed by phone according to the situation.

Free quote by phone

The price quoted by phone includes travel, labor, and standard parts. If a cylinder replacement proves necessary, the additional cost is communicated before any work begins.

Locked Out right now?

Don't stay locked out! Call us, we arrive subject to availability confirmed by phone.

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How does it work?

1. You call us

Briefly describe your situation. We give you a precise arrival time. Mention the cylinder brand and door type if you know them — it speeds up preparation.

2. We arrive quickly

Our locksmith arrives with the necessary equipment and contacts you before arrival to confirm the exact address.

3. Quote before intervention

We give you the exact price before starting. You approve, then we intervene. If the on-site diagnosis reveals a different issue, a revised quote is provided with no obligation.

4. Problem solved

The technician completes the accepted work and tests the result with you.

Our commitments

Non-destructive methods preferred
Arrival subject to availability confirmed by phone
Available 24/7
Price before dispatch
Terms communicated
Terms communicated

Frequently asked questions

Can you open a slammed door using non-destructive methods when the mechanism allows, to avoid damaging it?
Yes. We prefer non-destructive techniques when the mechanism condition allows. If a destructive method is necessary, it is explained before the job. Call 0495 205 400 and describe the lock for an assessment.
How long does it take to open a slammed door?
Opening a slammed door typically takes 5 to 15 minutes depending on the lock type. Travel time depends on location, traffic and availability and is confirmed by phone.
How do I know the price to open a slammed door?
Call us at 0495 205 400 for a free immediate quote. The price depends on the time (day/night) and lock type. We give you the exact price by phone before intervention, no surprises.
What should I do while waiting for the locksmith after slamming my door?
Stay near your home to greet us. Do not try to force the door yourself, you risk damaging the lock and increasing the cost. From our experience, we often see damage caused by DIY opening attempts. If possible, let a neighbour know while you wait.

Door slammed shut: how we get you back inside quickly

A gust of wind through the hallway, a moment of distraction while taking out the rubbish, and the door clicks shut behind you. Keys still on the kitchen table. We handle this scenario multiple times every day across Brussels — from apartments in Saint-Gilles to townhouses in Woluwe. It is by far the most common locksmith emergency, and fortunately, one of the quickest to resolve.

What actually happens when a door slams shut

When a door closes on its own, only the spring latch (the angled bolt that retracts when you push the handle) holds it shut. The lock has not been turned with a key, which means the deadbolt and any multipoint locking bars remain disengaged. This distinction matters because it determines whether a simple bypass technique will work — and in most cases, it will.

The bypass technique: fast and using non-destructive methods when the mechanism allows

Our technician slides a thin, flexible tool — typically a mica sheet or a purpose-built bypass strip — into the gap between the door and the frame, right at the level of the spring latch. A few controlled movements push the latch back, and the door swings open. No scratching, no drilling, no parts to replace. The entire process typically takes 5 to 10 minutes. You would struggle to tell anyone had been there at all.

What you should and should not do while waiting

  • Check windows first — a tilted bathroom window or an open fanlight on the ground floor might save you a call. Never climb to reach upper-floor windows, though; the risk is not worth it.
  • Do not try a bank card — despite what you may have seen online, sliding a card into the gap rarely works on modern doors and almost always damages the card or the door frame.
  • Do not shoulder the door — forcing it open can warp the frame, bend the hinges, and turn a simple ten-minute job into an expensive repair. We regularly see doors damaged this way.
  • Stay nearby — if you live in an apartment building, wait in the lobby or with a neighbour. We call a few minutes before arrival so you know when to come to the door.

When it is not as straightforward

From our experience, roughly one in ten slammed-door calls involves a lock with an automatic deadbolt. Models from Fichet and certain Mul-T-Lock ranges engage the deadbolt the moment the door closes, even without a key. In these cases, a simple bypass will not do the job, and we move to pick or decode the cylinder instead. This still avoids damage in the vast majority of situations, though it does take a bit longer — typically 15 to 30 minutes.

For a full walkthrough of what to do if you find yourself locked out, have a look at our guide: locked out, what to do?

Preventing it from happening again

Once you are back inside, it is worth taking a moment to think about prevention. A door stop or a soft-close hinge mechanism can prevent the door from slamming in draughts. If losing keys is a recurring problem, a Nuki smart lock lets you unlock with your phone — no physical key required. We can install one on the spot right after opening your door.

Locked out right now? Ring us on 0495 205 400 — a locksmith will be with you subject to availability confirmed by phone, anywhere in Brussels or Brabant.

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