French doors · Northern Ireland
Triple glazed French doors in County Down
Triple glazed French doors across County Down: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Bangor, Castlereagh and Downpatrick.
A warmer kitchen-diner: less cold glass by the table. French doors are a pair of doors that open together, with no fixed centre post, usually leading to a garden or patio.
Guide prices across County Down
uPVC French doors
about 1.5 m wide
£1,295 – £1,695inc VAT · £1,080 – £1,410 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
uPVC French doors with side panels
about 2.4 m wide
£1,895 – £2,395inc VAT · £1,580 – £1,995 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Aluminium French doors
about 1.8 m wide
£2,895 – £3,695inc VAT · £2,410 – £3,080 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
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
Northern Ireland sets replacement door limits through Technical Booklet F1 (2022): 1.8 W/m²K. Replacing 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.
Before ordering: Check with your council planning office before changing the style, material or size of doors, and always for listed buildings, conservation areas and flats.
How it works
We start with a survey, not a sales pitch: measurements, the structure above any bays, trickle-vent needs and escape windows. The quote that follows fixes the price, and anything unexpected on the day is agreed with you first.
- Free survey and a written quote fixed for the specification
- Glass build-up and door U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions
Do I need planning permission?
Replacing an existing door on a house is normally permitted development. Making a new opening is a structural change that may need approval; flats and listed buildings have their own rules.
Are French doors secure?
Modern French doors lock at multiple points on both leaves. We specify PAS 24 tested doorsets where available.
How much are triple glazed French doors?
Our guide starts at £1,295 fitted for uPVC and £2,895 for aluminium, inc VAT.
Do you cover all of County Down?
We arrange surveys and fitting across County Down.
Do I need permission for triple glazed French doors in Northern Ireland?
In Northern Ireland, check with your council planning office before changing the style, material or size of a door, and always for listed buildings and flats.
French doors 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
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
French doors 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.