Coil Balance Repair for Sash Windows
If your sash window drops, jams, or won’t stay open, the balance system is usually the culprit.
Our Coil balance repair restores smooth, safe movement, reduces strain on the frame,
and helps prevent further wear to staff beads, parting beads, and meeting rails.
We work on modern spring balance systems used in uPVC and timber sashes, including common sizes and weights.
From a single sticking sash to multiple windows in a property, we diagnose the cause, fit the correct parts,
and test the sash so it glides and holds position properly again.
Signs your coil balance is failing
- Window drops shut or won’t stay open at any height
- Sash feels heavy, stiff, or “jerky” when moving
- Window tilts or sits unevenly in the frame
- Rubbing, scraping, or damage around the jamb liners
- Broken or distorted pivot shoes, carriers, or springs
- Safety concern: sash slamming shut unexpectedly
A failing balance isn’t just annoying — it can damage the sash edges and liners, and it can be unsafe.
Fixing the issue early often reduces the amount of remedial work needed later.
What we check during a visit
Coil systems can fail for a few reasons: incorrect spring strength, worn shoes, snapped coils, poor alignment,
or previous incorrect fitting. We inspect:
- Spring condition, tension, and correct rating for the sash weight
- Pivot shoe condition and track alignment
- Side liners/jamb liners for wear, distortion, and friction points
- Pivot bars, screws, and sash hardware for security and fit
- Whether the sash is square and travelling evenly
Where practical, we’ll service and reset the existing system. If parts are beyond repair, we’ll fit the
right components so the sash is balanced and controlled.
How our repair process works
- Assessment: we test the sash movement and identify the failure points.
- Access: we safely remove the sash (where required) and expose the balance channel.
- Correct parts: we match spring strength and compatible hardware for your system.
- Fit & align: we install, align, and secure components to reduce friction.
- Test & finish: we check smooth travel, holding power, and safe closing.
If you need coil balance replacement, we’ll keep disruption minimal and ensure the sash sits true in the frame
with even gaps and reliable control.
We also offer a one-visit coil balance repair service for many common systems, subject to access and parts compatibility.
Local service and common window types
We regularly work on a coil balance window setup found in newer sash installations and certain retrofits.
If you’re searching for coil balance london help, we can advise on the most reliable fix based on the symptoms
and the balance channel type.
Expect clear, practical guidance — and where it matters, we’ll recommend a professional coil balance setup
that matches the sash weight correctly to avoid repeat failures.
If you’ve got a sticking window and need a quick coil balance fix, send a photo of the side channel and any labels/markings
you can see — it helps us identify the system faster.
Book an assessment: Tell us how many sashes are affected, what the window does (drops, sticks, won’t stay open),
and whether it’s timber or uPVC.
Contact us for availability, or see our related services:
Spiral balance repairs and
Draught proofing.
FAQs
How do I know if it’s the balance system or the window frame?
If the sash drops, won’t hold position, or suddenly feels much heavier, that usually points to the balance system.
If the sash only sticks in one spot, it can be alignment, paint build-up, swelling timber, or worn liners — we’ll confirm during inspection.
Can you repair one side only?
Sometimes, yes — but many sashes perform best when both sides are matched so tension and travel are even.
We’ll advise what’s most reliable once we see the condition of both channels.
Will fixing the balance reduce draughts?
Balancing helps the sash close properly and sit square, which can improve sealing.
If draughts persist, worn brush piles, beads, or liners may need attention too.
Do you work on uPVC and timber sash windows?
Yes. Coil systems are common in uPVC sashes and some timber installations. We’ll identify what you have and use compatible parts.
What should I do before you arrive?
Clear access to the window and remove items from the sill area. If possible, note whether the sash tilts in and if it’s the top or bottom sash affected.
