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Annecy · Greater Annecy · Haute-Savoie

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MULTISECU · LOCKSMITHING IN ANNECY

Change of sliding door lock in Annecy

Interior door with glanding, sliding window or external access: the locking mechanism must match the usage. MULTISECU identifies the mechanism and checks the sliding function before proposing a replacement.

Precise diagnosis · Explained quotation · Installation & adjustments

Thirard lock with hook: an example for an interior glanding door.
Thirard lock with hook: an example for an interior glanding door.

UNDERSTAND YOUR NEED

Three options, one explained.

Interior & glanding

Choose a closure and door furniture matching the privacy and the room's usage.

External window

Identify the frame reference and the compatible locking mechanism.

Garden access

For a sliding door, consider a dedicated external device rather than an internal lock.

LE BON DIAGNOSTIC

The door's movement guides the selection.

A hook lock can retain a sliding door within its strike plate, unlike a bolt designed solely for a hinged door. However, an internal door lock and an external bay lock do not share the same requirements.

On a glazed door, the available space in the frame, the panel thickness, and built-in handles influence the choice. On a bay window, the hardware and locking mechanism are part of a system tied to the window frame profile.

Before replacing the mechanism, we inspect the door's movement, alignment, and strike plate position. Worn rollers, a greasy rail, or incorrect adjustment may prevent a functional lock from operating.

COMPATIBILITÉ & QUALITÉ DE POSE

An appropriate hook, a seamless closure.

We measure the backset, any cylinder centres, lock case depth and faceplate shape. The hook bolt must enter the strike without hitting its edge. Altering the strike at random can conceal a sliding fault and create another problem.

The image shows a Thirard mechanism intended for an interior door with a keyed edge. It helps to understand the function of the bolt, but does not constitute a universal solution for glazing or gates. The selected model depends on your installation.

To prepare a quotation, a photo of the entire door, the frame, and the strike plate is particularly useful. Specify the door material, whether it is used indoors or outdoors, and whether the issue relates to movement or solely to locking.

BEFORE WORK

What the quotation must specify.

The lock reference, supply, installation, adjustments, and any necessary adaptations are detailed according to your situation. If the door must be opened initially, this operation is noted separately. Also see our pricing details.

To facilitate the first replacement: a general view of the door, a photo of the internal mechanism, and photos of the markings on the edge. Avoid dismantling a lock that is still functioning.

YOUR QUESTIONS

Before replacing your lock.

Does a bolted lock prevent cylinder picking?

The term describes the shape of the bolt that retains the door leaf. It does not indicate any particular resistance of the cylinder to forced entry techniques.

Can the handle be replaced alone?

Yes, if the handle is the only component at fault and if a compatible door furniture set exists. The mechanism and its operation are verified before any decision is made.

Why does the lock work when the door is open but not when closed?

This may indicate an alignment issue with the strike plate or a misalignment in the door leaf. The door leaf adjustment must be checked before replacing the lock.

FIND OUT MORE

Solutions related to your requirement.

See all lock replacement solutions ↗

YOUR PROJECT, CLEARLY

Let's talk about your access.

Describe your need and your equipment. We'll provide you with the information you need to prepare the intervention.