French doors · Cornwall
Triple glazed French doors in St Austell
Triple glazed French doors for homes in St Austell: measured on a free survey, made to order and fitted by installation teams working for us across Cornwall.
Pairs of garden doors with triple glazed safety glass. 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 St Austell
In St Austell, midday sun in late December sits around 16° high, with roughly 8 h 01 min of daylight. For windows facing north or shaded by neighbours, cutting heat loss matters more than solar gain; on open south-facing glass, ask about a higher solar-gain unit.
Guide prices in St Austell
| 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
England sets replacement door limits through Approved Document L (2021 edition, with 2023 amendments): 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.
Before ordering: 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
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.
- 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 St Austell
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.
Can French doors be triple glazed in uPVC?
Yes, many uPVC door systems take triple units; the frame depth is checked on survey.
Do you fit triple glazed French doors in St Austell?
Yes. We arrange surveys and fitting in St Austell and across Cornwall. 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 St Austell?
After the survey, typical manufacture time is 4 to 7 weeks, and a door is usually fitted in a day.
Nearby
Nearby towns on our list include Bodmin (15 km), Truro (22 km), Newquay (23 km) and Falmouth (30 km).
Other products in St Austell
- 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 St Austell: 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.