French doors · England
Triple glazed French doors in East Sussex
Triple glazed French doors across East Sussex: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Brighton, Eastbourne and Portslade.

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 East Sussex
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 East Sussex
Rules in England
In England, replacement external doors must meet 1.4 W/m²K, or a door set energy rating of band C (more than 60% glazed) or band B (other doors). Replacement external doors fall under the same energy rules: a competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council, or a building control body approves it.
Planning: Replacing doors on a house is normally permitted development if the new ones look similar. Flats need planning permission for a change that alters their appearance, an Article 4 direction may mean permission is needed, and listed buildings need listed building consent.
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.
- 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
Can French doors be triple glazed in uPVC?
Yes, many uPVC door systems take triple units; the frame depth is checked on survey.
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.
Do you cover all of East Sussex?
We arrange surveys and fitting across East Sussex.
Do I need permission for triple glazed French doors in England?
In England, a replacement door on a house that looks similar is normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent.
French doors in nearby areas of England
Other products in East Sussex
- 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 East Sussex
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
