Flats and apartments · England
Triple glazing for flats and apartments in Greater London
Flat and apartment triple glazing across Greater London: free survey, written fixed quote, and fitting by installation teams working for us. Towns we cover include Islington, Westminster and Hampton.

Specs and drawings ready for whoever approves them. Before replacing windows in a flat, check two things.
Guide prices across Greater London
One window
medium uPVC window, fitted from inside
£945 – £1,195inc VAT · £790 – £995 ex VAT
- Fitted from inside where access allows
- Old frame removed and taken away
- Made good inside
2-bed flat
5 medium windows
£4,595 – £5,695inc VAT · £3,830 – £4,745 ex VAT
- One visit, usually one day
- Consent paperwork list provided
- Made good inside
2-bed flat, aluminium
5 medium windows
£7,495 – £9,295inc VAT · £6,245 – £7,745 ex VAT
- Slim frames to match the block
- Consent paperwork list provided
- Made good inside
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 Greater London
- Islington
- Westminster
- Bexley
- Barking
- Archway
- Sutton
- Croydon
- Ilford
- Enfield
- Harrow
- Tottenham
- Walthamstow
- Dagenham
- Romford
- Hayes
- Wembley
- Fulham
- Edmonton
- Southall
- Putney
- Battersea
- Purley
- Peckham
- Chingford
- Uxbridge
- Wimbledon
- Stamford Hill
- Brixton
- Hounslow
- Finchley
- Cricklewood
- Mitcham
- Feltham
- Acton
- Beckenham
- Chelsea
- Streatham
- South Croydon
- Leytonstone
- Eltham
- Morden
- Carshalton
- Catford
- Willesden
- Canning Town
- Holloway
- Welling
- Shepherd's Bush
- Surbiton
- Greenford
- Heston
- Stratford
- Chiswick
- Thamesmead
- Ruislip
- Greenwich
- Barnet
- Kilburn
- Wood Green
- Muswell Hill
- Bow
- Highbury
- Camden Town
- Northolt
- Coulsdon
- Hornchurch
- Blackheath
- Isleworth
- Chalk Farm
- New Malden
- Hanworth
- Woodford Green
- Hadley Wood
- Richmond
- Barnes
- Notting Hill
- Wallington
- Pimlico
- Hampton
Rules in England
England requires replacement windows to achieve 1.4 W/m²K, or a Window Energy Rating of band B or better, which good triple glazing passes comfortably. 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.
- 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
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.
Is triple glazing good for a flat on a busy road?
Yes, especially with an acoustic laminated pane, which makes the bigger difference to noise.
Do I need permission to replace windows in my flat?
Often, yes. In England and Wales flats have no householder permitted development rights, so check with the council; in Scotland permission is generally needed only if the opening size changes or the flat is in a conservation area; in Northern Ireland ask your council. Separately, check your lease (England, Wales and Northern Ireland) or title deeds and factor (Scotland).
Do you cover all of Greater London?
We arrange surveys and fitting across Greater London.
Do I need permission for flat and apartment triple glazing in England?
In England, like-for-like replacements on a house are 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.
Flats and apartments in nearby areas of England
Other products in Greater London
- 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 across Greater London
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.
