Whole-house replacement · County Down
Whole-house triple glazing in Holywood
Homes in Holywood can have whole-house triple glazing supplied and fitted, with surveys arranged across County Down including BT18.
Every window and door in one planned job. Whole-house triple glazing means replacing every window, and usually the external doors, in one job.
Winter light and glass choice in Holywood
On the shortest day, Holywood gets about 7 h 14 min of daylight and the midday sun reaches only about 12° above the horizon. Low winter sun means north-facing rooms here gain little solar heat, which is where triple glazing’s lower heat loss helps most.
Guide prices in Holywood
| Guide | Supply and fit, inc VAT |
|---|---|
| 2-bed terrace 5 windows + front door | £5,695 – £7,195 |
| 3-bed semi 9 windows + front door | £9,395 – £11,795 |
| 4-bed detached 12 windows + front door + French doors | £13,595 – £16,995 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for whole-house replacement 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
The surveyor measures every opening, checks ventilation, escape windows and safety-glass zones, and talks through styles. Your written quote lists each item with its glass build-up and U-value, and the price is fixed for that specification.
- Free survey and a written quote fixed for the specification
- Glass build-up and whole-window U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions from Holywood
Do I need to move out?
No. We work room by room and make each opening weathertight the same day.
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 fit whole-house triple glazing in Holywood?
Yes. We arrange surveys and fitting in Holywood and across County Down. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
Do I need permission for whole-house triple glazing in Holywood?
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. Check whether your street is in a conservation area or covered by an Article 4 direction before changing the style.
Nearby
Nearby towns on our list include Newtownabbey (6 km), Belfast (8 km), Castlereagh (8 km) and Carrickfergus (9 km).
Other products in Holywood
- 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 in Holywood: book your free survey
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.