Areas · Northern Ireland
Triple glazing in County Londonderry
Triple glazed windows and doors for homes across County Londonderry, including Derry, Coleraine, Limavady. Free survey, published guide prices and a written quote fixed for the specification.
Across County Londonderry, we survey, quote and fit triple glazing: frames in four materials, five window styles, four door types and glass-only upgrades. 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 Londonderry
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 Londonderry
Our 4 local town pages in County Londonderry run from Magherafelt in the south to Coleraine in the north. On the shortest day, daylight ranges from about 7 h 08 min in Coleraine to 7 h 13 min in Magherafelt, and the midday sun reaches between 11° and 12°.
Derry is far enough north that the December sun barely clears 12° at midday, with only about 7 h 10 min of daylight. Long, dark winters are where triple glazing’s lower heat loss matters most.
Towns in County Londonderry
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
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
Do you fit triple glazing across County Londonderry?
Yes. We arrange surveys and fitting across County Londonderry.
How much does triple glazing cost in County Londonderry?
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 Londonderry?
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 Londonderry
Written quote fixed for the specification, after a free survey, and Building Regulations sign-off where the law requires it.