Areas · Northern Ireland
Triple glazing in County Antrim
Triple glazed windows and doors for homes across County Antrim, including Belfast, Lisburn, Newtownabbey. Free survey, published guide prices and a written quote fixed for the specification.

Homes across County Antrim can get every window and door triple glazed, or just the rooms that need it most, with a written quote fixed for the specification. No building notice is needed for a straight replacement in Northern Ireland; we fit to the regulations and give you a written handover pack.
Products in County Antrim
Windows by frame material
Window styles
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
Doors
Glass and upgrades
Projects
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Winter light across County Antrim
Our 8 local town pages in County Antrim run from Lisburn in the south to Ballymoney in the north. On the shortest day, daylight ranges from about 7 h 09 min in Ballymoney to 7 h 16 min in Lisburn, and the midday sun reaches between 12° and 12°.
Belfast is far enough north that the December sun barely clears 12° at midday, with only about 7 h 15 min of daylight. Long, dark winters are where triple glazing’s lower heat loss matters most.
Towns in County Antrim
Rules in Northern Ireland
Northern Ireland requires replacement windows to achieve 1.6 W/m²K, or a Window Energy Rating of band C or better, which good triple glazing passes comfortably. 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
You will know exactly what you are buying: the quote states the unit build-up, frame, finish, fitting work and how Building Regulations compliance is handled. On fitting day each opening is replaced and closed up before the team moves on.
- 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
Do you fit triple glazing across County Antrim?
Yes. We arrange surveys and fitting across County Antrim.
How much does triple glazing cost in County Antrim?
Our guide prices are the same UK-wide: triple glazed uPVC windows from £695 each, fitted and inc VAT. Your written quote fixes the price after the survey.
What are the rules in Northern Ireland?
Replacement windows must meet 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.
Do I need planning permission in County Antrim?
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.
Nearby areas in Northern Ireland
Triple glazing across County Antrim
Written quote fixed for the specification, after a free survey, and Building Regulations sign-off where the law requires it.
