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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.

79Towns with local pages
EnglandRules applied
1.4U-value limit (W/m²K)
4 to 7 weeksTypical lead time
Three-storey brick apartment block with uniform new grey windows

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
Typical project

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

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

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.

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