Sliding door repairs across County Down
Most sliding door problems come down to a handful of worn parts, and a repair is often far cheaper than a new door:
When sending photos of a County Down 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.
If a sliding door at your County Down home has started to drag, clean the bottom track thoroughly before booking anything, as grit alone can cause the problem.
- Repairing or refurbishing a damaged track removes the dips and burrs that make rollers jump, which stops a panel coming off its track.
- A new lock gearbox or cylinder restores secure locking when a handle turns but the bolts no longer engage, without replacing the whole door.
- 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.
Repair prices in County Down
Repair prices are the same across County Down. 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 |
|---|---|
| Re-alignment, adjustment and service | £125–£195 |
| Lock or gearbox replacement | £165–£295 |
| Track repair or refurbishment | £195–£395 |
| Misted sealed unit replacement (per pane) | £225–£495 |
| Roller replacement (per sliding panel) | £185–£325 |
Towns we cover in County Down
We survey and fit sliding door repairs in 13 towns across County Down, including the BT18, BT20, BT21, BT23, BT24, BT25 postcode districts.
Approvals in Northern Ireland
Like-for-like repairs in Northern Ireland do not usually need building control approval; we take on Northern Ireland repairs by arrangement.
Questions about sliding door repairs in County Down
Is it worth repairing an old sliding door in County Down?
Often, yes. New rollers, a lock gearbox or a track refurbishment cost a fraction of a new door. If the frame is twisted or the door fails on thermal performance, we will say so and price a replacement instead.
Is there a free survey for sliding door repairs?
No, our free survey applies to new doors and replacements only. Repairs are quoted from photos and a short video you send us, or after a diagnostic visit where photos are not enough. If a visit is needed, the diagnostic visit costs £95 inc VAT and is confirmed before we attend, so you know where you stand.
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.
How can I stop my sliding door needing repairs?
Keeping the track clean is the most effective way to keep a sliding door running well, because grit wears rollers and damages the track surface. Vacuum the track regularly, wipe it with a damp cloth, keep drainage slots clear and avoid slamming panels into their stops. Our maintenance guide has a simple routine.