French doors · Hertfordshire
Triple glazed French doors in Letchworth Garden City
We arrange surveys and fitting of triple glazed French doors in Letchworth Garden City and the SG6 area, with a written, fixed quote after a free survey.

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.
Winter light and glass choice in Letchworth Garden City
By midsummer Letchworth Garden City has about 16 h 44 min of daylight, but in December only around 7 h 44 min, with the noon sun at about 15°. Triple glazing keeps more heat in during those long, dark months; big south and west windows may suit solar-control glass for summer.
Guide prices in Letchworth Garden City
| Guide | Supply and fit, inc VAT |
|---|---|
| uPVC French doors about 1.5 m wide | £1,295 – £1,695 |
| uPVC French doors with side panels about 2.4 m wide | £1,895 – £2,395 |
| Aluminium French doors about 1.8 m wide | £2,895 – £3,695 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for french doors 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
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.
- Guide prices published, not hidden
- No pressure: the quote is yours to keep
- Frames, glass and fitting in one contract
- Advice on planning and consents before you order
Questions from Letchworth Garden City
How much are triple glazed French doors?
Our guide starts at £1,295 fitted for uPVC and £2,895 for aluminium, inc VAT.
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.
Do you fit triple glazed French doors in Letchworth Garden City?
Yes. We arrange surveys and fitting in Letchworth Garden City and across Hertfordshire. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
How long does it take to get triple glazed French doors fitted in Letchworth Garden City?
After the survey, typical manufacture time is 4 to 7 weeks, and a door is usually fitted in a day.
Nearby
Also near Letchworth Garden City: Hitchin (5 km), Stevenage (9 km), Luton (17 km) and Ampthill (19 km).
Other products in Letchworth Garden City
- 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 in Letchworth Garden City: book your free survey
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.
