uPVC Windows
Best-value A-rated windows, made in our own factory. 7-10 day lead times.
The installation showroom
Window & door installation in London, measured, made, fitted.
Glazing London handles window installation across London end to end: uPVC, aluminium, timber and sash windows plus every door style, FENSA-certified on completion. Choose full supply-and-fit or supply-only, with frames made to measure in our own factory. Free survey and fixed quote: call 07399 253464 (lines open 24/7).
FENSA approved
Own factory, no middleman
uPVC from 7-10 days
Insurance-backed guarantee
Two ways to buy
Supply-only windows, or supplied & fitted.
Most window companies only sell installation. Because our frames come from our own factory, you can buy from us two ways: supply-only windows delivered to site for your builder or your own hands, or the full double glazing installation service where we survey, fabricate, fit and certify. Same frames, same glass. The difference is who fits them and who carries the paperwork.
| Supply-only | Supply & fit | |
|---|---|---|
| Measuring | You (or your builder) provide sizes; we double-check anything unusual before fabrication | ✓ Laser-measured survey by our own fitters, so we own the sizes |
| Fabrication | Made to measure by our sister factory Prime Fabrication, at factory-direct prices | ✓ Same factory, same profiles, same glass units |
| Delivery | Kerbside delivery across London, glazed or unglazed | ✓ We bring the frames on fitting day |
| Installation | By your installer | ✓ Our employed window fitters, never subcontracted |
| Building Regulations | Installer's responsibility, no FENSA certificate from us | ✓ FENSA self-certified; certificate issued on completion |
| Guarantee | Manufacturer's guarantee on frames & sealed units | ✓ Frames, units and workmanship, insurance-backed |
| Best for | Trade, builders, developers, confident DIY | ✓ Homeowners and landlords who want one accountable team |
Not sure which suits your project? Send sizes or photos on WhatsApp and we'll price both options.
Collection one
New windows for London homes
Every frame material and window style we install, from A-rated new windows for a whole terrace to a single conservation-approved casement. All double or triple glazed with warm-edge spacers and argon fill as standard.
Aluminium Windows
Slimline frames, big glass, any RAL colour, thermally broken.
Timber Windows
Engineered timber casements and sashes, factory-finished in any colour.
Sash Windows
New timber sash and uPVC lookalikes for period London terraces.
Casement Windows
The London workhorse, side or top hung, in uPVC, aluminium or timber.
Bay & Bow Windows
Structurally supported bay replacements with matching angles and poles.
Tilt-and-Turn
Inward-opening for flats and above-ground floors, safe cleaning, secure venting.
Heritage & Steel-Look
Slim "Crittall-style" frames in aluminium, period looks, modern U-values.
Conservation Area & Listed Building Glazing
Sympathetic replacements and slim units that keep planners happy.
Collection two
Doors, front to garden
Entrance doors that secure the front of the house; glazed doors that open the back of it. All fitted with multi-point locks and PAS 24 options, and certified under FENSA where regulations apply.
Aluminium Bifold Doors
Fold the back wall away, 2 to 7 panels, slim sightlines.
Sliding Patio Doors
Big fixed glass, effortless glide, great where a bifold steals space.
Composite Front Doors
GRP-skinned, timber-core doors in dozens of styles and colours.
Aluminium Entrance Doors
Contemporary pivot and panel doors for statement frontages.
French Doors
Classic double doors for gardens and balconies, uPVC or aluminium.
uPVC Doors
Back doors, French and patio sets, factory-direct with our uPVC range.
Collection three
Roof, structural & outdoor glazing
Glazing above your head and around your terraces, installed by the same team, with toughened and laminated safety glass specified to BS 6262 as standard.
Rooflights & Skylights
Fixed and opening flat rooflights for extensions and loft spaces.
Roof Lanterns
Slim aluminium lanterns that lift light into kitchen-diners.
Conservatory & Orangery Glazing
Full reglazing with solar-control and self-cleaning glass options.
Conservatory Roof Replacement
Swap tired polycarbonate for glass or lightweight solid roofs.
Glass Balustrades
Frameless and channel-fixed balustrades in toughened laminated glass.
Juliet Balconies
Compliant glass Juliets for French doors on upper floors.
Glass Extensions & Structural Glazing
Frameless corners, glass roofs and structural screens, engineered to spec.
FENSA-certified, every fitted job.
Replacement windows and doors in England must comply with Building Regulations. As a FENSA-approved installer we self-certify our work, register it with your local authority and issue your FENSA certificate and insurance-backed guarantee on completion, the documents your solicitor will ask for when you sell.
How it works
From survey to certificate in four steps.
Free survey
Our window fitters laser-measure every opening and talk through styles, glass and colours at your home (no obligation).
Fixed quote
An itemised, fixed price for frames, glass and fitting. Compare our supply-and-fit against any supply-only quote you have.
Fabrication
Frames made to measure at our sister factory, typically 7-10 days for uPVC, 2-3 weeks for aluminium.
Fit & certify
Most homes done in 1-2 days, openings sealed same-day, rubbish removed, FENSA certificate to follow.
If your existing frames are sound, replacement isn't always the answer: misted units, dropped hinges and stiff locks are often a repair job at a fraction of the cost. Honest advice starts with our window & door repairs team, and if you've got broken glass right now, our 24/7 emergency glazing service can make it safe within the hour.
Questions
Window installation, answered
Do you sell supply-only windows in London?
Yes. Because our uPVC and aluminium frames are made by our sister company Prime Fabrication, we can supply made-to-measure windows and doors factory-direct to trade customers, builders and confident DIYers, glazed or unglazed, delivered across London. Note that supply-only windows are not FENSA-certified; Building Regulations compliance becomes the installer's responsibility.
Are your window installations FENSA certified?
Yes. Glazing London is a FENSA-approved installer, so every replacement window and door we fit is self-certified for Building Regulations. You receive your FENSA certificate after completion, along with an insurance-backed guarantee: the documents solicitors ask for when you sell the property.
How long does window installation take?
From survey, made-to-measure uPVC typically takes 7-10 days to fabricate and aluminium 2-3 weeks. Fitting itself is quick: most London terraced houses (6-10 windows) are completed in 1-2 days, with each opening sealed the same day it is opened up.
Should I choose uPVC or aluminium windows?
Can you install windows in a conservation area?
Yes. We install conservation-friendly options across London: timber and uPVC sash lookalikes, heritage and steel-look frames, and slim double-glazed units that respect original sightlines. For listed buildings we advise on consent before any work is ordered.