nt glazing
uPVC Windows
Manufactured in Britain to the exact aperture of your property, and fitted by our own directly-employed team.
- 4.9/5 · 840+ Reviews
- FENSA · Installsure · 10-yr guarantee
Overview
Measured Properly. Manufactured Precisely.
Fitted Without Compromise.
Every uPVC window starts with a survey against your actual opening, not a catalogue size, so the measurement matches your property exactly before manufacturing begins.
Hardware is fitted and tested before the frame leaves the workshop, so nothing gets forced into place or adjusted on-site during installation.
Key benefits
- A+ energy rating as standard
- Argon-filled double or triple glazing
- Bespoke shapes and sizes
- PAS 24 security tested
- 20+ colour and foil finishes
- 10-year insurance-backed guarantee
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Image Gallery
Profile Engineering
Inside the Frame
This is where performance actually lives, not on the spec sheet. Multiple internal chambers trap air and stop heat escaping. Steel reinforcement keeps the frame rigid under pressure. Every corner is fusion-welded, not bolted or glued, so there’s no seam for water, draughts or decay to creep in.
Built once, properly, and left to do its job for decades.
Features
Detail in Every Part
Real performance detail, not just headline specs.
Thermal Performance
Low-E coating and warm-edge spacers cut heat loss.
Security
Multi-point locking at 6 points, not just the handle.
Durability
Fusion-welded joints, built for decades of daily use.
Weather Sealing
Dual gasket seals tested against wind-driven rain.
Ventilation & Hardware
Trickle vents and restrictors available as standard, not add-ons.
Drainage
Internal channels move condensation and water back outside.
Colours
Finished the Way You Actually Want It
Anthracite Grey
Cream
Black Brown
Rosewood
Light Oak
White Woodgrain
Chartwell Green
Pebble Grey
Handles
Hardware to Match the Finish
Brushed Chrome
Lever, monkey-tail & espagnolette
Brushed Chrome
Lever, monkey-tail & espagnolette
Brushed Chrome
Lever, monkey-tail & espagnolette
Brushed Chrome
Lever, monkey-tail & espagnolette
Window Finder
Not Sure Which Window Is Right for You?
Tell us where you are and we’ll send a local surveyor to measure, discuss options and confirm pricing in writing. Usually within 48 hours.
WHy choose us
30 Years In, Still Doing It Under One Roof
A lot of installers subcontract at least one stage of the job, the survey, the manufacturing, or the fitting itself, splitting responsibility across several different companies.
NT Glazing keeps all three under one roof, so the person who measured your window is still accountable for how it performs long after installation day.
What You Can Expect:
- Free, no-obligation home survey
- Fixed written price, valid for 90 days
- 10-year insurance-backed guarantee
- FENSA registered installer
uPVC Windows
What You're Actually Getting With Every Window
A+
Energy Rating
10 Yrs
Guarantee Cover
90 Days
Price Validity
20+
Colour Finishes
100+
Homes Installed
FAQ's
Questions About uPVC Windows
Fusion-welded corners mean there's no adhesive seam to fail over time. Properly installed and maintained, uPVC frames are typically specified for decades of reliable use.
Foiled and painted finishes are UV-stabilised for outdoor exposure, though direct south-facing sun will weather a frame faster than a shaded elevation over the years.
The A+ rating reflects how much heat the window retains, based on the glazing, spacer bar and frame construction together, not the glass on its own.
Hardware, hinges and seals can usually be serviced individually. A full frame replacement is only needed if the structure itself has genuinely failed, which is uncommon.
Regularly. Listed building consent is a separate legal question specific to the property, and we'll flag it during the survey if it looks like it applies.
Drs
Know More
A window is more than glass in a frame, it’s glazing type, security rating and construction quality working together every single day. Get one of those wrong and the whole window underperforms, no matter how good it looks.
These guides cut through the sales talk and explain what actually separates a window that lasts from one that doesn’t.
One Last Chance Before You Go
Still Deciding?
Get Your Free Quote.
Fill out this 10-second form to get your fixed-price survey booked before you leave. No pressure, quotes valid for 90 days.
- 10-year insurance-backed guarantee
- FENSA registered installer
Quick Quote Form
Get a free estimate sent straight to your phone.
NT Glazing is a family-run, FENSA-registered glazing company serving homeowners, self-builders and trade customers across West London, North London and Hertfordshire.
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© 2026 NT Glazing Ltd. Registered in England & Wales.