Sliding patio doors · Greater London
Triple glazed sliding patio doors in Thamesmead
From the first measure to the handover pack, we handle triple glazed sliding patio doors for homes in Thamesmead and the rest of Greater London.

uPVC and aluminium sliders with low-threshold options. A sliding patio door has large glazed panels that slide past each other on a track, so it opens without swinging into the room.
Winter light and glass choice in Thamesmead
By midsummer Thamesmead has about 16 h 38 min of daylight, but in December only around 7 h 50 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 Thamesmead
| Guide | Supply and fit, inc VAT |
|---|---|
| uPVC 2-pane slider about 1.8 m wide | £1,895 – £2,295 |
| uPVC 2-pane slider, wide about 2.4 m wide | £2,295 – £2,895 |
| Aluminium slider about 3 m wide | £3,295 – £4,195 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for sliding patio 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.
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
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- 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 from Thamesmead
Do sliding doors need safety glass?
Yes, all door glass must be safety glass. Triple units in sliders are toughened or laminated.
Can I have a level threshold?
Low thresholds are available; they need a suitable drainage detail outside, which we check on survey.
How long does it take to get triple glazed sliding patio doors fitted in Thamesmead?
After the survey, typical manufacture time is 5 to 8 weeks, and a door is usually fitted in a day.
Do you fit triple glazed sliding patio doors in Thamesmead?
Yes. We arrange surveys and fitting in Thamesmead and across Greater London. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
Nearby
Also near Thamesmead: Barking (4 km), Welling (5 km), Dagenham (6 km) and Ilford (7 km).
Other products in Thamesmead
- 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
- French 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
Sliding patio doors in Thamesmead: 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.
