Fix Window Lock in London (17)

A faulty window lock can affect both security and the everyday use of your home.

Whether a lock has jammed, broken, or no longer closes properly, window lock repair services can help restore safety without needing to replace the entire window.

If your window won’t lock securely or feels stiff or misaligned, search for window lock repair services in London with Checkatrade for a job done right.

What is window lock repair?

Window lock repair involves fixing, adjusting, or replacing faulty locking mechanisms so windows close securely and operate smoothly.

This service is commonly used when locks become stiff, misaligned, damaged, or worn through regular use or attempted forced entry.

Signs you might need window lock repair

• The window won’t lock or unlock properly
• The handle turns but the lock doesn’t engage
• The window feels loose or misaligned when closed
• The key has snapped/jammed/won't turn

Addressing these issues early can help maintain home security and prevent damage to the window frame.

How much does window lock repair cost?

For window lock repairs, expect to pay between £82 and £144, with an average cost of £107.

Window lock repair costs vary depending on:

• Type of window (uPVC, timber, aluminium)
• Lock mechanism required (espagnolette, shoot bolt, sash lock)
• Whether parts need replacing or adjusting
• Ease of access to the window
• Number of locks repaired in one visit

Minor adjustments are often cheaper than full lock replacements.

Window lock repair vs window replacement

Window lock repair

• Lower cost
• Faster turnaround
• Ideal when the frame and glazing are in good condition

Window replacement

• Higher cost
• Longer installation time
• Suitable if the window itself is damaged or warped

In most cases, repairing the lock is sufficient and avoids unnecessary replacement.

How long does window lock repair take?

Most window lock repairs take 30–60 minutes per window, depending on the lock type and whether parts are readily available.

Multiple locks can often be repaired during a single visit.

Common mistakes to avoid with window lock repair

• Forcing a stiff or jammed lock
• Using incorrect replacement parts
• Ignoring alignment issues in the window frame
• Delaying repairs after a failed lock

These issues can worsen damage and increase repair costs.

Tips for hiring a window lock repair service in your area

Before hiring window lock repair services near you:

• Read reviews on Checkatrade
• Confirm they repair your window type (uPVC, timber, aluminium)
• Ask whether parts are included in the quote
• Compare a few quotes for transparency

For tradespeople committed to quality and a job done right, search for window lock repair services in London with Checkatrade.