Flats and apartments · Greater London
Triple glazing for flats and apartments in Sutton
From the first measure to the handover pack, we handle flat and apartment triple glazing for homes in Sutton and the rest of Greater London.

Window replacement for flats, with the consents sorted first. Before replacing windows in a flat, check two things.
Winter light and glass choice in Sutton
In Sutton, midday sun in late December sits around 15° high, with roughly 7 h 51 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 Sutton
| Guide | Supply and fit, inc VAT |
|---|---|
| One window medium uPVC window, fitted from inside | £945 – £1,195 |
| 2-bed flat 5 medium windows | £4,595 – £5,695 |
| 2-bed flat, aluminium 5 medium windows | £7,495 – £9,295 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for flats and apartments in England
The rules for replacement windows in England are set by Approved Document L (2021 edition, with 2023 amendments): 1.4 W/m²K, or a Window Energy Rating of band B or better. Replacement windows are a controlled fitting. A competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council within 30 days; otherwise a building control body approves it.
Before ordering: Replacing windows on a house is normally permitted development if the new ones look similar. New upper-floor windows in a side wall must be obscure glazed and fixed, or open only above 1.7 m. Flats and maisonettes have no householder permitted development rights, so a change that alters their appearance needs planning permission. An Article 4 direction in a conservation area 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.
- Free survey and a written quote fixed for the specification
- Glass build-up and whole-window U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions from Sutton
Can windows in a flat be fitted from inside?
Often yes, which avoids scaffolding. It depends on the window design and access, checked on survey.
What about tall blocks?
Higher-risk buildings (18 m or 7 storeys and over in England) have extra building safety requirements. Talk to your building’s accountable person first.
Do you fit flat and apartment triple glazing in Sutton?
Yes. We arrange surveys and fitting in Sutton and across Greater London. 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 flat and apartment triple glazing fitted in Sutton?
After the survey, typical manufacture time is 4 to 7 weeks, and most homes are fitted in 1 to 4 days.
Nearby
Also near Sutton: Carshalton (3 km), Banstead (3 km), Ewell (3 km) and Wallington (4 km).
Other products in Sutton
- 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
- 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
- Passivhaus and EnerPHit
Flats and apartments in Sutton: 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.
