nt glazing
Composite Doors
Manufactured in Britain with a solid reinforced core, and properly fitted by our own directly-employed fitting team.
- 4.9/5 · 840+ Reviews
- FENSA · Installsure · 10-yr guarantee
Overview
Built to Take the Weather, and Worse
Every composite door is built around a solid reinforced core, not a hollow uPVC skin, so the frame resists impact instead of just insulation.
Hardware and every locking point is fitted and tested in the workshop, so nothing gets adjusted or forced into place on installation day.
Key benefits
- A-rated thermal core as standard
- Reinforced, multi-point locking system
- Bespoke sizes and glazing panels
- PAS 24 security tested
- 20+ colour and foil finishes
- 10-year insurance-backed guarantee
gallery
Image Gallery
Core Engineering
Inside the Core
Strip away the colour and the glass, and this is what’s actually protecting your home. A dense foam core sits inside a steel-reinforced frame, built to resist impact, not just look good doing it. The outer skin handles weather and kerb appeal. The core does the real work, which is why a proper composite door won’t flex, warp or dent like cheaper alternatives.
Features
Strength in Every Layer
Detail that holds up under real pressure.
Thermal Performance
A solid foam core automatically cuts the heat loss significantly.
Security
Multi-point locking engages at 8 points around the frame.
Durability
Weatherproof skins resist fading, warping and cracking for years.
Weather Sealing
Compression seals keep wind and rain out completely.
Glazing Options
Decorative or plain glass panels to suit the aesthetics of the door.
Low Maintenance
No painting or sanding, just an occasional wipe down.
Colours
A Colour to Match Every Front Door Elevation
Anthracite Grey
Cream
Black Brown
Rosewood
Light Oak
White Woodgrain
Chartwell Green
Pebble Grey
Handles
Cylinders and Handles Chosen for Security
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 Composite Door 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
One Front Door, Built and Fitted by One Team
A front door is the first thing a visitor touches and the first thing a burglar tests, so the fit matters as much as the door.
NT Glazing measures the opening, manufactures the door to that exact size, and fits the locking hardware ourselves, so one company stays accountable for how it holds up.
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 Comes as Standard on Every Door
A+
Thermal Core
10 Yrs
Guarantee Cover
90 Days
Price Validity
20+
Colour Finishes
100+
Doors Installed
FAQ's
Questions About uPVC Windows
Foiled finishes are UV-stabilised for outdoor exposure, though a south-facing door will weather faster than one that sits in shade most of the day.
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.
Properly fitted and maintained, a solid core composite door is typically specified for decades of daily use, without the warping timber doors suffer.
Hardware, hinges and locks can usually be replaced individually. A damaged outer skin is harder to repair and may need the whole door replaced.
Yes, decorative and plain glazing panels are both available, chosen to match the character of the property rather than a single standard design.
Drs
Know More
Your front door is doing two jobs at once, making a first impression and standing between your home and anyone trying to get in. Colour is the last decision, not the first. Core material, lock grade and glazing all matter more. These guides cover what genuinely affects security and longevity, so you’re choosing on substance, not just the swatch card.
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.
Quick Links
Products
© 2026 NT Glazing Ltd. Registered in England & Wales.