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uPVC windows · England

Triple glazed uPVC windows in Greater London

Homes across Greater London, including Islington, Westminster and Hampton, can have triple glazed uPVC windows measured, made to order and fitted.

79Towns with local pages
EnglandRules applied
1.4U-value limit (W/m²K)
4 to 6 weeksTypical lead time
White uPVC casement windows on a 1930s red-brick semi-detached house

Low-upkeep frames, a three-pane unit and fitting in one price. Triple glazed uPVC windows are plastic-framed windows fitted with a sealed unit of three glass panes and two gas-filled cavities.

Guide prices across Greater London

Small window

about 600 x 1000 mm (bathroom, landing)

£695 – £845inc VAT · £580 – £705 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out
Typical size

Medium window

about 1200 x 1200 mm (bedroom)

£895 – £1,095inc VAT · £745 – £910 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out

Large window

about 1800 x 1200 mm (lounge)

£1,395 – £1,695inc VAT · £1,160 – £1,410 ex VAT

  • uPVC frame, triple glazed, warm-edge spacers
  • Removal and disposal of the old window
  • Fitted, sealed and made good inside and out

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

In England, replacement windows must meet 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

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.

  • 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

How long do uPVC windows last?

The Energy Saving Trust gives 20 to 35 years for modern glazing. The sealed units carry their own guarantee, set out on your quote.

How much more is triple glazed uPVC than double?

Usually 20 to 30% more for the same window, though quotes in the UK range from about 15 to 40%. The written quote shows the triple price, and we can price double glazing alongside it if you want to compare.

Do I need trickle vents?

In England and Wales, if your old windows had trickle vents, the new ones must have vents at least as big, and if they did not, the room must be no less ventilated than before. Scotland and Northern Ireland also require that replacement windows do not make ventilation worse. We size vents on the survey.

Do you cover all of Greater London?

We arrange surveys and fitting across Greater London.

Do I need permission for triple glazed uPVC windows 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.

uPVC windows in nearby areas of England

Other products in Greater London

uPVC windows 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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