Professional Coil Balance Repair for uPVC Sash Windows
Quick Coil Balance Repair Service
At upvcsashrepairs.co.uk, we offer fast and reliable coil balance replacements for modern sash windows—with all parts in stock and same-day service available. Unlike other companies, we’re ready when you are, ensuring minimal downtime and hassle.
Quick Coil Balance Replacement Service
At upvcsashrepairs.co.uk, we offer fast and reliable coil balance replacements for modern sash windows—with all parts in stock and same-day service available. Unlike other companies, we’re ready when you are, ensuring minimal downtime and hassle.
Why Replace Your Coil Balance?
Coil Balances Repair (Constant-Force)
Coil balances, also known as constant-force balances, play a crucial role in the smooth and safe operation of modern sash windows. These compact mechanisms use a flat, coiled spring to counterbalance the weight of the sash, allowing it to stay open at any height and close gently without slamming. When working correctly, coil balances make your windows effortless to use and extend their overall lifespan. However, like any moving part, they can wear down over time. Understanding the signs of failure—and knowing how replacement works—can help you keep your windows safe, functional, and long-lasting.
Why Coil Balances Are Important
Every time you open or close your sash window, the coil balance is doing the heavy lifting behind the scenes. Its constant-force spring provides even tension throughout the sash’s movement. This means you don’t need to fight against gravity, and the window won’t unexpectedly drift downward.
When coil balances fail, several issues may arise:
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Windows that slam shut suddenly – a major safety hazard, especially in homes with children or pets.
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Sashes that won’t stay up – forcing you to prop them open with sticks or avoid using the window altogether.
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Uneven or jerky movement – making the sash difficult to control.
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Additional strain on the frame – potentially causing further damage over time.
Replacing faulty balances restores proper function, improves safety, and helps protect your window investment.
Replacing Coil Balances the Right Way
At Spiral Balance Repairs, we always follow best practice when it comes to balance replacement. One common mistake is to replace only the failed coil on one side of the window. This may seem like a quick fix, but it almost always leads to uneven tension. When one side has a brand-new spring and the other still has a worn spring, the sash becomes unbalanced. This imbalance causes premature wear, reduced performance, and often another breakdown shortly after.
For this reason, we always replace both sides of the coil balance system together. By doing so, the sash weight is evenly distributed, ensuring smooth movement and longer-lasting performance. This small but vital step saves money and frustration in the long run.
Signs of a Failing Coil Spring Balance
Our Coil Balance Replacement Process
When you book a repair with Spiral Balance Repairs, here’s what you can expect:
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Inspection & Identification – We carefully inspect the window to confirm whether the coil balances are the cause of the problem. Each coil is stamped with weight and size information, which we use to match the correct replacement parts.
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Safe Removal – Coil balances are under tension, so removal must be done with care. Our experienced technicians handle this safely without causing damage to the window frame.
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Balanced Replacement – Both sides are replaced with new, high-quality coils to ensure equal tension.
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Testing & Adjustment – We test the sash at multiple positions to confirm smooth operation and adjust if necessary.
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Final Check – Before we leave, we make sure your window functions like new, staying open when required and closing gently.
Benefits of Professional Coil Balance Replacement
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Smooth, effortless sash movement
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Improved safety – no risk of windows slamming shut unexpectedly
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Longer window lifespan – less strain on other components
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Energy efficiency – windows close tightly, improving insulation
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Peace of mind – knowing both sides are balanced and reliable
Why uPVC Sash Repair?
Since 1990, uPVC Sash Repair has been trusted by homeowners for reliable sash window repairs across the region. Our team specialises not only in coil balances but also spiral balances, sash cords, and secondary glazing. We combine traditional craftsmanship with modern repair techniques to deliver lasting results.
We don’t believe in quick fixes. Every repair we carry out is done with long-term performance in mind, using only proven parts and methods. That’s why our customers return to us whenever their sash windows need attention.
Book Your Coil Balance Replacement Today
If your sash window refuses to stay open, drifts down on its own, or slams shut unexpectedly, the coil balances are most likely to blame. Don’t wait until the problem worsens—call Spiral Balance Repairs today for expert coil balance replacement.
We’ll restore your windows to smooth, safe operation and give you confidence that they’ll last for years to come.

