County Antrim · Northern Ireland
Window Repairs in County Antrim
We can quote for upgrading door cylinders in County Antrim to anti-snap designs, cut to fit your existing uPVC or composite doors.
- Guide from £65
- 9 towns covered
- Postcode areas BT
Dropped uPVC door repair in County Antrim
Most modern windows use an espagnolette lock: a metal bar in the sash edge that moves locking cams into keeps on the frame when the handle turns. If the handle feels stiff or spins freely, the gearbox or bar may be worn, rather than the handle itself.
A door that drags on the threshold, catches the frame or needs lifting to lock has usually dropped. Doors can often be adjusted using the hinges and by repacking the glass or panel so the door sits square again. Adjustment is usually tried before replacing parts.
Sash windows run on cords and weights or on spring balances. A broken cord leaves the sash heavy or loose, and a weak balance makes it slide down. Replacing cords, rehanging the sash and easing the beads can make a sash window run smoothly again.
A uPVC or composite door with a multipoint lock has one central gearbox that drives hooks, rollers or bolts along the door edge. A failed gearbox can leave the door stuck locked or unable to lock. In many cases only the gearbox needs replacing, not the whole strip.

Towns we cover for window repairs in County Antrim
Choose your town for local details, nearby areas and the postcode districts we cover.
What applies in County Antrim
For replacement doors and windows in Northern Ireland, PAS 24 products are a sensible choice for security.
Where a window provides an escape route, its replacement in Northern Ireland should give at least the same escape opening as before.
County Antrim has its own coastline, so for homes and businesses near the sea, salt air and wind-driven rain are part of the brief. Near the coast, salt air corrodes window and door hardware more quickly, especially hinges, keeps and lock mechanisms. Stainless steel friction stays and corrosion-resistant hardware last longer, and regular cleaning and lubrication help keep moving parts free.
In flats and terraced homes, working on upper-floor windows may need to be done from inside. Security matters on street-facing doors, so anti-snap cylinders and secure handles are worth considering. Parking near the property can affect access.
Guide prices
| Typical job | Guide price inc VAT |
|---|---|
| Replace a pair of window hinges | £95 – £145 |
| Replace a window locking mechanism | £125 – £195 |
| Replace a door multipoint lock | £195 – £325 |
| Fit an anti-snap cylinder | £65 – £115 |
Choosing your window repairs
Anti-snap euro cylinder
A cylinder tested to resist snapping, such as TS 007 3-star or Sold Secure SS312 Diamond, cut to fit your door.
Gaskets and draught seals
Replacement seals matched to the frame profile to stop draughts, rattles and noise around opening windows and doors.
Sash cords and balances
New cords, weights or spring balances for sash windows that drop, stick or will not stay in position.
Multipoint door lock
A new gearbox or full locking strip for uPVC and composite doors that stick, will not lock or have a loose handle.
Window Repairs in County Antrim: questions
Is my euro cylinder lock secure?
Many older euro cylinders can be snapped, which lets an intruder open the door. Look for markings on the cylinder face. A TS 007 3-star mark, or certification to Sold Secure SS312 Diamond, shows the cylinder has been tested to resist snapping. The glazier can check and replace the cylinder with one cut to fit your door.
Can you find parts for old or discontinued windows?
Often, yes. Many hinges, locks and gearboxes are made to common sizes, and modern equivalents exist for many older designs. The glazier measures key dimensions such as backset, length and stack height. If an exact match is not available, the quote will explain the nearest option and any adaptation needed.
Why has my uPVC door dropped and can it be fixed?
Doors drop when hinges wear or loosen, or when the glass or panel slips inside the door and stops supporting it square. Signs include dragging on the threshold and needing to lift the handle hard to lock. Most dropped doors can be fixed by adjusting the hinges and repacking the glass or panel, without replacing the door.
How do I look after window and door hardware?
Clean dirt from tracks, keeps and hinges, then apply a light machine oil or silicone spray to moving parts once or twice a year. Keep frame drainage slots clear. Do not force handles that feel stiff, as this can break gearboxes. Report a dropping door or sticking handle early, as small adjustments are easier than replacing parts.
Which parts of County Antrim do you cover for window repairs?
We cover the whole of County Antrim, including Belfast, Lisburn, Newtownabbey, Carrickfergus and Ballymena, and postcode areas BT. Building rules for window repairs here follow the regulations for Northern Ireland. Enter your postcode on the quote form and we will confirm cover; then a glazier will talk through the job, explain any charge before booking and give you a written quote.
Other glazing services in County Antrim
- Replacement Glass in County Antrim
- Misted Glass Repair in County Antrim
- Emergency Glazing in County Antrim
- Safety Glass in County Antrim
- Window Film in County Antrim
- uPVC Windows in County Antrim
- Aluminium Windows in County Antrim
- Sash Windows in County Antrim
- Composite Doors in County Antrim
- Bifold Doors in County Antrim
- Sliding Doors in County Antrim
- Secondary Glazing in County Antrim
- Roof Lanterns in County Antrim
- Glass Balustrades in County Antrim
- Frameless Glass in County Antrim
- Shower Screens in County Antrim
- Glass Splashbacks in County Antrim
- Bespoke Mirrors in County Antrim
- Glass Roofs in County Antrim
- Shopfront Glazing in County Antrim
- Curtain Walling in County Antrim
- Glass Partitions in County Antrim
- Property Glazing in County Antrim
All glazing in County Antrim · Window & Door Repairs across the UK
Get a written quote in County Antrim
Clear guide prices, any charge explained before booking, and one point of contact for every glazing job.