Whole-house replacement · Northern Ireland
Whole-house triple glazing in County Down
Whole-house triple glazing across County Down: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Bangor, Castlereagh and Downpatrick.
Whole-house guide prices for 2-, 3- and 4-bed homes. Whole-house triple glazing means replacing every window, and usually the external doors, in one job.
Guide prices across County Down
2-bed terrace
5 windows + front door
£5,695 – £7,195inc VAT · £4,745 – £5,995 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- One fitting team, usually 1 to 2 days
3-bed semi
9 windows + front door
£9,395 – £11,795inc VAT · £7,830 – £9,830 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- Usually 2 to 3 days on site
4-bed detached
12 windows + front door + French doors
£13,595 – £16,995inc VAT · £11,330 – £14,160 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- Usually 3 to 4 days on site
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Towns in County Down
Rules in Northern Ireland
The rules for replacement windows in Northern Ireland are set by Technical Booklet F1 (2022): 1.6 W/m²K, or a Window Energy Rating of band C or better. Replacing windows or external doors does not need full plans or a building notice, but the work must still comply; enlarging an opening or other structural change needs building control approval.
Planning: Check with your council planning office before changing the style, material or size of windows or doors, and always for listed buildings, conservation areas and flats.
How it works
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions
How long does a whole-house installation take?
Usually 1 to 2 days for a small house and 2 to 4 days for a larger one.
Will I need scaffolding?
Most two-storey homes can be done from ladders or towers. Where scaffolding is needed, it is quoted separately.
How much does it cost to triple glaze a 3-bed semi?
Our guide is £9,395 to £11,795 for 9 uPVC windows and a front door, fitted and inc VAT. UK quotes typically range from about £6,500 to £11,000 for windows only.
Do you cover all of County Down?
We arrange surveys and fitting across County Down.
Do I need permission for whole-house triple glazing in Northern Ireland?
In Northern Ireland, check with your council planning office before changing the style, material or size of windows, and always for listed buildings and flats.
Whole-house replacement in nearby areas of Northern Ireland
Other products in County Down
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Whole-house replacement across County Down
Written quote fixed for the specification, after a free survey. No building notice is needed for a straight replacement in Northern Ireland; we fit to the regulations and give you a written handover pack.