- Postcode district
- RH12
- Survey
- Priced from photos or a diagnostic visit
- Booking
- Most repairs are booked within a few weeks, parts permitting
- Guide price
- From £95 inc VAT
- Nearby
- Crawley, Cranleigh, Horley
- Building rules
- England
Common sliding door faults we fix in Horsham
Here is what usually goes wrong with sliding doors, and what can be done about it:
When sending photos of a Horsham 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.
Landlords with properties in Horsham can often keep a sound sliding door working with a roller and lock service rather than a full replacement.
- 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.
- Repairing or refurbishing a damaged track removes the dips and burrs that make rollers jump, which stops a panel coming off its track.
Typical repair costs around Horsham
These guide prices include VAT, parts and labour for the repair visit. Most faults can be priced from photos; if we need to see the door first, a diagnostic visit is £95.
| Repair | Guide price inc VAT |
|---|---|
| Track repair or refurbishment | £195–£395 |
| Misted sealed unit replacement (per pane) | £225–£495 |
| Roller replacement (per sliding panel) | £185–£325 |
| Lock or gearbox replacement | £165–£295 |
Booking a sliding door repair in Horsham
Send photos or a short video of the fault and we tell you the likely repair and cost before anyone visits. We then book a repair visit in the RH12 district at a time that suits you; most repairs are completed in a single visit, unless parts need ordering or a new glass unit must be made.
Do you need approval in Horsham?
Repairs are generally outside the Building Regulations in England. Any replacement glass we fit in a door is safety glazing, in line with Approved Document K, and if the door needs replacing rather than repairing, the controlled-fitting rules apply.
Repairs and upgrades to consider
- Roller replacement. New rollers for each sliding panel, restoring a smooth, quiet action.
- Lock and gearbox replacement. A new mechanism when the handle turns but the door will not lock.
- Misted unit replacement. A new sealed safety glass unit in place of one that has failed.
Questions about sliding door repairs in Horsham
Is it worth repairing an old sliding door in Horsham?
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 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.
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.
What photos should I send for a repair quote?
Send a photo of the whole door from inside, close-ups of the handle, the lock edge and the bottom track, and any label or marking on the frame or glass spacer. A short video of the door opening and closing is especially helpful. Tell us roughly how old the door is and what it is doing wrong.

