How To Replace Window Locks

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Window Locks are the most important components of your window because they keep your home safe and secure. As hardware technology continues to improve, homeowners are opting to change their locks for new and improved designs, models, and finishes to improve the functionality and security of their windows.

The guide breaks down the different window locks available and the process of replacing them to improve home security.

Types Of Window Locks

There are various types of window locks on the market. At G Johns & Sons, we supply casement, sash, and espagnolette window locks. We also stock window stay pins and window restrictors to ensure your window is as secure as possible.

Sash Window Locks

These mechanical locks attach the top and bottom sashes on double-hung windows. When sash locks are fitted and engaged, they prevent windows from being opened from the outside. Installing sash locks on windows in your home has a range of benefits.

These benefits include:

Increased security
Better home insulation
Improves home energy efficiency.

How To Replace Sash Window Locks

When it comes to changing old sash locks for new ones, the process of replacing sash window locks is straightforward if you follow these short steps:

Remove the old lock by unscrewing it from the sash lock window frame.
Next, align the new lock with the old position or carefully mark out new holes if you want the lock in a different position.
Screw the new lock into place.
Test by sliding and locking the sash window.

Casement Window Locks

These locks are designed to work only with casement windows. Latch locks on casement windows are the most common, as they secure the window frame when locked. Casement windows open outwards when the lever is pulled, so the locks keep them tightly sealed when closed. Installing new casement windows also has various other benefits besides security.

Other benefits include:

The resistance of the lock prevents damage from strong winds due to it being tightly sealed.
Due to it being tightly sealed, your home's insulation improves.
Increases energy efficiency due to heat being kept inside your home.

Casement window locks also come in a range of different types:

Keyed locks- need a key to open and close.
Hook locks- only works on windows with a hook mechanism that latches the window onto a frame.
Stay locks- restricts how far windows can open, not allowing full reign to open fully.

Modern casement windows also tend to have multi-point locking systems (espagnolette locks) to maintain a more concealed aesthetic and smoother operation.

How To Replace Casement Window Locks

The process of replacing casement window locks is very similar to replacing sash window locks.

Remove the old casement lock by unscrewing it from the sash lock window frame.
Next, align the new casement lock with the old position or carefully mark out new holes if you want the lock in a different position.
Screw the new lock into place.
Test by sliding and locking the casement window.

Espagnolette Window Locks

These locks are multi-point locking systems used mainly on casement windows. They contain a metal strip and vertical rod that functions by expanding when a handle is turned. The expansion allows the window to be secure at multiple points along the frame. There are many benefits to espagnolette window locks.

These benefits include:

Enhanced security due to the lock being concealed within the window frame.
Some espagnolette locks are key-operated, enhancing security further.
They are tightly sealed, which prevents water leaks and improves insulation.
They are easy to operate because they work via a single-turn handle.

How To Replace Espagnolette Window Locks

Replacing espagnolette window locks is similar to replacing sash and casement window locks. However, there are some slight differences due to it being a multi-point locking system. Here’s how to replace espagnolette window locks:

Open the window fully and look for the handle and espagnolette rod attached to the window frame.
Unscrew the old espagnolette lock and remove it.
Then, carefully detach and unscrew the old espagnolette strip from the window frame.
Now align the new espagnolette lock system with the existing empty screw holes
Secure the new espagnolette strip to the window frame.
Close the window and turn the handle to engage the multi-point lock system.
Ensure the function is smooth and secure.

Where Can I Find New Window Locks?

G Johns & Sons offers a range of window locks to enhance functionality and improve home security. From casement and sash locks to multi-point locking systems (espagnolette locks), keep on top of the quality of your window locks.

Our window locks are available in a range of finishes, including brass, chrome, satin nickel, and bronze.

For more information on how to replace window locks, please get in touch with one of our team.