Double Glazing

Double glazing is the single most popular home improvement for London households, and for good reason. By sealing two panes of glass around an insulating cavity, modern double glazing in London dramatically reduces heat loss, cuts traffic and street noise, and keeps your home more comfortable all year round. At Lord Glazing we have installed thousands of A-rated double glazed windows across the capital, combining the latest energy-saving glass with frames that suit period terraces, post-war semis and contemporary new builds alike. With 15+ years' experience and more than 5,000 completed projects, we know exactly what works for London's varied housing stock and its sometimes demanding planning requirements.

Why choose double glazing in London

London homes face a particular set of challenges: older properties that leak heat, busy roads that bring noise and dust, and energy bills that climb every winter. Quality double glazing answers all three. A sealed glazing unit traps a layer of argon gas between the panes, while a low-emissivity (low-E) coating reflects warmth back into the room. The result is a warmer home, lower heating costs and a noticeably quieter interior. As a FENSA registered installer and member of the Glass & Glazing Federation (GGF), every window we fit meets Building Regulations for thermal performance, and you receive a FENSA certificate for your records and any future sale. We are also TrustMark approved and Checkatrade verified, with a 4.9★ rating from over 200 reviews — so you can be confident your installation is handled to the highest standard.

Key benefits

• Lower energy bills — A-rated units can cut heat loss through windows by up to 70{14e20c32187051693702c131a1b2473199a1721b58e222e784afa06fae5a6d86} compared with single glazing.
• Reduced noise — ideal for homes near main roads, railways or flight paths across the capital.
• Improved security — multi-point locking and toughened glass options deter intruders.
• Less condensation — warmer internal glass means fewer misted, damp windowsills.
• Added value — efficient, attractive windows boost kerb appeal and resale potential.
• Low maintenance — modern frames need only an occasional wipe to stay looking new.

Options & materials

We tailor every installation to your property, your budget and any conservation requirements. Choose from:

• uPVC — the most cost-effective, durable and energy-efficient choice, available in white, woodgrain and a wide range of colours.
• Aluminium — slim sightlines and a sleek modern finish, perfect for contemporary homes and large glazed openings.
• Timber — authentic warmth for period and conservation-area properties, including heritage-style profiles.
• Glass upgrades — acoustic glass for noise, self-cleaning glass, obscured glass for bathrooms and toughened or laminated safety glass.
• Styles — casement, tilt-and-turn, bay and bow, flush sash and more.

Not sure whether to step up to better thermal performance? Our triple glazing service offers even greater insulation, while period homeowners often pair new units with our sash windows range.

Our double glazing installation process

1. Free survey & quote — we visit your home, take precise measurements and discuss styles, then provide a transparent fixed price with no obligation.
2. Bespoke manufacture — your windows are made to measure to the agreed specification and colour.
3. Professional installation — our fully insured fitters remove the old units, install the new frames and make good around the openings.
4. Inspection & clean-up — we check every seal, lock and hinge, then leave your home tidy.
5. Certification & guarantee — you receive your FENSA certificate and our 10-year guarantee.

Double glazing across London

We install double glazing across all 33 London boroughs, covering North London (Barnet, Enfield, Haringey, Camden, Islington), South London (Croydon, Bromley, Lambeth, Southwark, Lewisham, Wandsworth, Merton, Sutton, Kingston, Richmond), East London (Tower Hamlets, Hackney, Newham, Waltham Forest, Redbridge, Barking & Dagenham, Havering, Greenwich, Bexley), West London (Ealing, Hounslow, Hillingdon, Brent, Harrow, Hammersmith & Fulham) and Central London (Westminster, Kensington & Chelsea, the City of London). Wherever you are in the capital, a local Lord Glazing team can reach you.

Energy ratings & what to look for

When comparing double glazing in London, the Window Energy Rating (WER) is the clearest guide to performance. Like the labels on appliances, windows are rated from A++ down, and the higher the rating the less heat escapes. We fit A-rated units as standard, combining low-E glass, argon-filled cavities and warm-edge spacer bars to deliver excellent thermal efficiency. It is also worth looking at the U-value (lower is better), the gas fill, and the quality of the seals and hardware, because a window is only as good as its weakest component. Our team is always happy to explain the specification in plain English so you can make an informed choice rather than simply comparing headline prices. Because we are a GGF member, every product we supply meets recognised industry standards, and our FENSA registered status means the installation itself is independently assured.

Why London homeowners choose Lord Glazing

Choosing an installer is just as important as choosing the windows. With more than 5,000 completed projects and a 4.9★ rating from over 200 reviews, Lord Glazing has built a reputation across the capital for honest advice, tidy workmanship and reliable aftercare. We provide free no-obligation quotes and transparent fixed pricing, so there are no surprises once work begins. Every job is covered by our 10-year guarantee, we are fully insured, and our accreditations — FENSA, GGF, TrustMark approved and Checkatrade verified — give you independent reassurance about the quality and safety of our work. From a single replacement window to a whole-house upgrade, we treat every London home with the same care.

Pricing guide

Double glazing with Lord Glazing starts from £350 per window, with your exact price depending on size, frame material, glass specification and the number of windows. We believe in transparent, fixed pricing — the figure we quote is the figure you pay, with no hidden extras. Get a free quote today or call our team on 020 3633 8141 to discuss your project. You can also contact us by email at info@lordglazing.co.uk.

Frequently Asked Questions

How long does double glazing last?

A quality double glazed unit typically lasts 20 years or more. Our installations are backed by a 10-year guarantee, and the frames themselves often outlast that comfortably with minimal maintenance.

Will double glazing reduce noise from the road?

Yes. Standard double glazing cuts noise noticeably, and for homes on busy London roads we can specify acoustic laminated glass with different pane thicknesses for even better sound reduction.

Do I need planning permission for double glazing?

Most replacements are permitted development, but homes in conservation areas or listed buildings may have restrictions. We advise on this during your survey and can supply heritage-style frames where required.

Is the installation messy or disruptive?

We work cleanly and efficiently. Most homes are completed in a day or two depending on the number of windows, and our fitters protect your floors and tidy up fully before leaving.

Are you accredited and insured?

Absolutely. Lord Glazing is FENSA registered, a GGF member, TrustMark approved, Checkatrade verified and fully insured, with more than 5,000 completed projects across London.