Window Lock Repairs

A window that won't lock is a security problem as well as a nuisance — and it's often a simpler fix than people expect. Most window lock faults are worn handles or a jammed locking mechanism, and both are repairable without replacing the window.

Common window lock problems we fix

• The handle won't lock — the mechanism behind it has jammed or worn.
• The key won't turn — the lock barrel or the mechanism has failed.
• The handle is loose or spins — the internal spindle or gearbox has gone.
• The window won't seal when locked — the locking points aren't engaging the keeps.

What it typically costs

Prices are typical, not a quote — we confirm the fixed price before any work.

Fix	Typical price
Lock adjustment or re-alignment	from £75
Handle replacement	from £85
Locking mechanism replacement	from £115
Full lock overhaul (flat-rate, per window)	around £175

Can you fix it yourself?

• Tightening a loose handle is often a screwdriver job.
• Lubricating the locking points can free a stiff handle.
• Replacing a handle is possible if you match the exact make and model.

But if the mechanism itself has failed — the handle turns but the window won't lock, or the key won't turn — that usually needs a professional with the right parts, because the mechanism is specific to the window's make.

When to call a professional

Call us if the window won't lock, the key won't turn, or the handle spins without engaging. An unsecured window is a security risk — don't leave it overnight if you can avoid it.

We'll identify exactly which part has failed, quote a fixed price, and usually fix it the same visit.

Call our team or request a callback and tell us what the lock's doing.

Related: uPVC Window Lock Repair Cost — From £75–£175