Sliding door repairs across County Durham
Before you replace a sliding door, it is worth knowing which faults can be put right:
Where an older sliding door in County Durham has several faults at once, such as misted glass, worn rollers and a failing lock, compare the total repair cost with a replacement before deciding.
When sending photos of a County Durham door for a repair quote, include any label on the frame edge or spacer bar, because it can help identify the system and its parts.
- Where a repair is not worth doing, for example because parts are unavailable, we say so plainly rather than fitting parts that will not last.
- A new lock gearbox or cylinder restores secure locking when a handle turns but the bolts no longer engage, without replacing the whole door.
- Quoting from photos and a short video means many repairs can be priced without a visit, saving time and the diagnostic visit charge for straightforward jobs.
Repair prices in County Durham
Repair prices are the same across County Durham. These guide prices include VAT, parts and the visit to carry out the repair. Most faults can be priced from photos; if we need to see the door first, a diagnostic visit costs £95 inc VAT, confirmed before we attend.
| Repair | Guide price inc VAT |
|---|---|
| Track repair or refurbishment | £195–£395 |
| Handle replacement | £95–£165 |
| Lock or gearbox replacement | £165–£295 |
| Roller replacement (per sliding panel) | £185–£325 |
| Re-alignment, adjustment and service | £125–£195 |
Towns we cover in County Durham
We survey and fit sliding door repairs in 14 towns across County Durham, including the DH1, DH3, DH8, DH9, DL1, DL12 postcode districts.
Approvals in England
Like-for-like repairs such as new rollers, locks, handles or adjustment are not building work under the Building Regulations in England. If the whole door is replaced, it becomes a controlled fitting and the replacement rules apply.
Questions about sliding door repairs in County Durham
Do you repair sliding doors in County Durham?
Yes. We repair sliding doors in County Durham and across County Durham, including Darlington. Send photos or a short video and we will tell you the likely fix and cost before booking a visit.
Is it worth repairing an old sliding patio door?
Repairing an old sliding patio door is worth it if the frame and glass are sound and the parts are available, because a few new rollers or a lock can restore it for a fraction of the cost of replacement. If the frame is failing, the door is single glazed or parts are discontinued, replacement usually makes more sense.
Can a sliding door track be repaired?
A damaged sliding door track can often be repaired or refurbished, depending on the door and how badly the track is worn. On some systems a replacement track cover can be fitted over a worn track, and on others a damaged section can be repaired. If the track is part of a frame that is failing more widely, replacement may be the better option.
Why won't my sliding door lock?
A sliding door that will not lock usually has a failed lock gearbox, a worn or broken keep, or a panel that has dropped so the hooks no longer line up with the frame. Forcing the handle can make it worse. Photos of the handle, the lock edge and the frame where the hooks engage usually show which part has failed.

