We cover 1 area across County Londonderry. A standard aluminium casement window here typically costs £620–£920 supplied and fitted — Northern Ireland pricing, roughly 88% of the national average.
| Job | Typical cost |
|---|---|
| Casement window, approx. 600 × 900mm supplied & fitted | £460 – £670 |
| Casement window, approx. 1200 × 1200mm supplied & fitted | £620 – £920 |
| Casement window, approx. 1800 × 1200mm supplied & fitted | £860 – £1,280 |
| Tilt & turn window, approx. 1200 × 1200mm supplied & fitted | £750 – £1,100 |
| Bi-fold door, 3 panes, approx. 3m supplied & fitted | £3,340 – £5,280 |
| Whole house, 3-bed semi (8–10 windows) supplied & fitted | £5,720 – £9,680 |
Ranges include VAT and installation. Final price depends on size, spec, access and site condition — a survey gives you a fixed number.
Same day and next day, county-wide. Most faults are repairs, not replacements.
| Job | Typical cost |
|---|---|
| Misted / blown double glazed unit, replaced per unit | £80 – £190 |
| Same-day glass replacement, standard pane per pane | £120 – £280 |
| Emergency boarding up per opening | £90 – £180 |
| Window or door handle replaced per handle | £40 – £100 |
| Friction hinge replaced per hinge | £60 – £110 |
| Lock / locking mechanism replaced per lock | £80 – £180 |
Ranges include VAT and installation. Final price depends on size, spec, access and site condition — a survey gives you a fixed number.
Free survey, fixed price, no pressure. Or call us and we'll give you a realistic ballpark in five minutes.
