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UPVC double glazed windows across the UK

Homeowner replacing tired or draughty windows with modern A-rated UPVC double glazing, comparing per-window and whole-house quotes. Compare free, no-obligation quotes from vetted installers, typically £450 - £900 installed depending on your city and spec.

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UPVC double glazed windows - what to expect

UPVC double glazed windows are still the default choice for the majority of UK homeowners - they hit the sweet spot between price, thermal performance and low maintenance. A properly specified A+ rated UPVC casement now delivers a whole-window U-value below 1.2 W/m²K, well inside the current Building Regulations Part L threshold, and modern flush-sash and heritage profiles finally look at home on Victorian and Edwardian stock rather than fighting it.

Prices are driven by three things: the frame (60mm chambered UPVC vs. 70mm+ triple-chamber, standard white vs. RAL foil or woodgrain, single vs. double gasket), the glazing unit (28mm double A-rated as a baseline, 44mm triple for £120-£180 extra per m², warm-edge spacers, argon or krypton fill), and how the window opens - fixed panes are cheaper, tilt-and-turn or fully reversible sashes carry a hardware premium. A mid-range A-rated casement in white typically lands at £450-£650 fitted per opening; upgrade to A+, anthracite grey foil and Yale multi-point locks and you're closer to £700-£900.

Fitting is normally a one-to-two day job for an average three-bed semi, including cill trims, silicone perimeter seal, trickle vents (required for Building Regs Part F on almost all replacements) and post-fit inspection. A FENSA or CERTASS registered installer will self-certify to Building Control - keep that certificate with your deeds, it's what conveyancing solicitors ask for. The two biggest cost traps are non-standard sizes on original 1930s bays and hidden lintel repairs behind pebbledash: a decent surveyor flags both before the quote is issued, not on fitting day.

Typical UK price range for upvc double glazed windows: £450 - £900 installed. Actual figures for your city sit on the city page below.

Popular specs for upvc double glazed windows

Standard mid-market spec: 70mm 6-chamber UPVC frame, A-rated whole-window (Uw ≤ 1.4 W/m²K), 28mm sealed unit with warm-edge spacer bar and argon fill, low-E soft coat inner pane, Yale or Roto multi-point locking, internal glazed for security, external cill trim, trickle vents to Part F, FENSA/CERTASS certificate on completion, 10-year IGU + 10-year workmanship.

Before you commit - four things to check

  • Insist on the whole-window energy rating (WER) A or A+ and the certified Ug value on the glazing spec sheet - a lot of £399/window offers quietly ship a C or D rating.
  • Check the guarantee covers the sealed unit (10-year IGU minimum), the hardware (5-10 years) AND the installation workmanship separately - three overlapping guarantees, not one vague 'lifetime' promise.
  • Trickle vents are compulsory on replacement windows under Part F unless you have equivalent background ventilation elsewhere - installers who quote without them are cutting a corner you'll pay for at re-sale.
  • For rear elevations of a pre-1960s house, ask specifically about a 'flush sash' UPVC profile - the frame sits flush with the outer face rather than protruding, which reads much closer to the original timber the house was designed with.

UPVC double glazed windows by area

Every city we cover for upvc double glazed windows, grouped by region.

East Midlands

East of England

London

North East England

North West England

Scotland

South East England

South West England

Wales

West Midlands

Yorkshire and the Humber

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