Expert guides on double glazing, triple glazing, window types, costs, and energy ratings for UK homeowners. Find out which windows save the most energy and money.
452 articles
Aluminium windows are worth the cost for many UK homeowners, particularly those with period properties, large glazed areas, or homes where aesthetics and long-term value matter. Installed costs typically range…
The cheapest way to improve old windows' energy efficiency is draught-proofing, which costs as little as £3 to £10 per window as a DIY project and can save a typical…
Replacing a broken window pane in the UK costs between £60 and £400 for the majority of jobs in 2026. Single pane repairs in older properties typically cost £60 to…
For most standard houses in England, planning permission is not required to replace windows because the work falls under permitted development rights. However, properties in conservation areas, those covered by…
When comparing timber windows and uPVC on eco-friendly grounds, sustainably certified timber with FSC or PEFC accreditation generally holds the advantage due to its lower embodied carbon, biodegradability, and ability…
Condensation on the outside of your windows is almost always good news rather than a problem. It forms when the outer pane cools below the dew point of the surrounding…
Bay window replacement in the UK typically costs between £1,500 and £3,500 for a standard three-panel uPVC double-glazed bay, supply and fitted, but timber or aluminium frames, structural repairs, or…
uPVC sliding sash windows can be a good choice for period homes, but quality varies dramatically between manufacturers and price points. Budget products costing £400 to £700 fitted often look…
The French door glazing option that keeps heat in best for UK homes is triple glazing with a low-emissivity coating, argon or krypton gas fill, and warm-edge spacer bars, achieving…
The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing.
Choosing a window company in the UK safely means verifying that the installer is registered with FENSA or CERTASS, the two government-authorised schemes that allow them to certify their work…
Composite windows use a dual-material frame, most commonly a timber or uPVC core with a powder-coated aluminium exterior, delivering strong thermal performance and minimal maintenance. In 2026 installed costs range…
When buying new windows in the UK, you should receive two separate written guarantees, a manufacturer's guarantee covering the product and an installer's guarantee covering the workmanship, alongside a FENSA…
The cost to replace a double glazed unit in the UK in 2026 typically ranges from £130 to £300 all-in for a standard casement window, covering both the new sealed…
Triple glazing can add measurable value to a UK home by improving its EPC rating, with the Department for Energy Security and Net Zero linking each EPC band improvement to…
Window replacement in the UK typically takes six to eight weeks from first enquiry to completed installation, according to industry guidance current in 2026. The longest phase is nearly always…
uPVC windows are the more affordable option, typically costing £300–£600 per window installed in the UK, while aluminium windows range from £600–£1,200. Aluminium offers a longer lifespan and slimmer frames…
In the UK, many window problems including condensation between panes, draughts, and stiff handles can be repaired for £50 to £300, far less than the £300 to £1,500 or more…
Fitting standard double glazing in a listed building in the UK almost always requires Listed Building Consent from your local planning authority, and straightforward uPVC double glazing is rarely approved.…
The best windows for a 1930s semi detached home combine authentic period styling with modern thermal performance. Slim-profile double-glazed timber or woodgrain uPVC casements with leaded light detailing are widely…
Tilt and turn windows are a strong choice for UK homes seeking improved energy efficiency, easier cleaning, and flexible ventilation from a single window unit. They typically cost between £600…
Understanding a window quote in the UK means checking whole-frame U-values (the legal maximum is 1.4 W/m²K under current Building Regulations), BFRC energy ratings, and itemised per-window pricing rather than…
New windows noise reduction delivers a noticeable but not total improvement for most UK homeowners. Standard double glazing rated at around Rw 30 dB reduces perceived loudness by roughly a…
UK homeowners are required to inform their insurer when fitting new windows, as it constitutes a material change to the property under UK insurance contract law. Failing to disclose the…
A full house of uPVC double glazed windows typically costs between 4,000 and 8,000 pounds for a three-bedroom semi-detached house. Individual windows range from 300 to 800 pounds depending on size and opening style. Prices include supply, fitting, and building regulations certification.
Triple glazing costs around 20 to 30 percent more than double glazing but delivers a U-value of around 0.8 compared to 1.2 for standard double glazing. The energy savings are modest for most UK homes, making it most worthwhile for north-facing rooms, noisy locations, or new builds where the price premium is smaller.
Most window replacements fall under permitted development and do not need planning permission. However, if your home is a listed building or in a conservation area, you will likely need consent. The installer must be FENSA registered or you will need separate building control sign-off.
Modern double glazed sealed units typically last 20 to 25 years. uPVC frames can last 25 to 35 years with minimal maintenance. Signs that replacement is needed include misting between panes, draughts around seals, difficulty opening or closing, and visible frame deterioration.
No UK scheme funds replacement windows on their own. The Great British Insulation Scheme closed on 31 March 2026 and only ever covered insulation, never glazing. ECO4 runs to 31 December 2026 in Great Britain only and targets insulation and heating for households on qualifying benefits; glazing is included only where it forms part of a wider whole-house retrofit. Glazing is also standard-rated for VAT at 20%, as HMRC lists double and secondary glazing as excluded from the energy-saving materials zero rate.
Triple glazing achieves U-values of 0.8 W/m²K compared to 1.4 W/m²K for double glazing, saving UK homeowners an additional £30-50 per year in heating costs while providing superior noise reduction…
New windows in the UK cost £300-£1,200 per window depending on material and specification. A full house replacement for a three-bedroom semi ranges from £3,500 to £7,500 for uPVC double…
Secondary glazing is generally worth it for a Victorian terraced house, particularly where conservation area rules prevent sash window replacement. Fitted internally without altering the building's exterior, it can reduce…
Low E glass windows are worth it for UK homeowners because the invisible metallic coating significantly reduces heat loss through the glass, helping homes meet Building Regulations under Part L…
Window security ratings in the UK are primarily defined by PAS 24, a British Standards Institution specification requiring windows to pass independent forced-entry testing, and Secured by Design, a police-backed…
Double glazed windows mist up inside when the hermetic seal around the unit fails, allowing humid air to enter the gap between the panes where it condenses. This is a…
