What Are Espags and Gearboxes?
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Espagnolette mechanisms (or “espags”) are the multi-point locking systems found inside most modern windows. When you turn the handle, they secure the sash at multiple points along the frame, keeping your window tightly closed and secure.
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The gearbox is the central unit behind the window handle. It transfers motion from the handle to the locking arms or rods. If the gearbox fails, the handle may spin freely or feel jammed, and the window won’t lock or open properly.
Looking for a Window lock repair service in Essex?
Our Services Include:
🔧 Espag Mechanism Replacement
We replace faulty or damaged locking rods, mushroom cams, and shoot bolts — bringing your window back to full working order.
⚙️ Window Gearbox Repairs & Swaps
If your handle is stiff, loose, or non-responsive, the gearbox may be worn or broken. We fit compatible replacements quickly and cleanly.
🪛 Handle & Locking Point Realignment
Misaligned windows can make the lock feel stiff or fail entirely. We realign the sash and locking points to prevent further wear and ensure smooth operation.
🛠️ uPVC, Aluminium & Timber Window Repairs
We work across all major window systems — including older, discontinued, or custom-sized units.
🔐 Handle Replacements & Security Upgrades
We supply and fit new handles, including lockable options for enhanced safety and insurance compliance.
🏡 Common Signs You Need a Repair:
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Window handle turns but nothing happens
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The window is stuck shut or won’t stay closed
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Locking points don’t engage fully
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Handle feels loose, stiff, or broken
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You can’t lock or unlock the window with the key
✔️ Why Choose Essex Door & Window Repairs LTD?
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Cost-effective repairs vs. full window replacement
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Skilled, local engineers with years of experience
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No call-out fees — just transparent, honest pricing