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
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.
Measured Properly. Manufactured Precisely.
Fitted Without Compromise.
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
Window Styles
Four Ways to Open, One Standard of Build
Casement Windows
Built for daily opening and closing.
The most common window style for good reason, side-hung, wide-opening, and suited to almost any property type. Manufactured to your exact opening, not a stock size, and fitted by our own directly-employed team.
Features
- Multi-chamber uPVC profile
- Multi-point locking standard
- Dual gasket weatherseal
- Top or side-hung
- Trickle vents available
- Wide colour range
Benefits
- Strong adjustable ventilation
- Easy interior cleaning
- Suits most properties
- Low maintenance finish
- Solid thermal performance
- Genuinely cost-effective build
Specifications
- Material: uPVC frame
- uPVC & aluminium options
- Double or triple glazing
- Multi-point locking system
- PAS 24 compliant
- Custom sizes available
Flush Casement Windows
Timber character without timber upkeep.
The sash sits flush with the frame, not proud of it, recreating a genuine timber look for properties where real wood isn't practical to maintain, without losing the character.
Features
- Flush sash design
- Woodgrain foil finishes
- Heritage hardware compatible
- Deep bottom rail
- Multi-point locking standard
- Dual gasket weatherseal
Benefits
- Authentic period appearance
- Stronger period kerb-appeal
- Suits most properties
- Conservation area suitable
- Solid thermal performance
- Low maintenance finish
Specifications
- Material: uPVC frame
- uPVC & aluminium options
- Double or triple glazing
- Multi-point locking system
- PAS 24 compliant
- Custom foil finishes
Vertical Sliding Windows
Traditional motion, modern performance.
Sashes slide vertically within the frame, replicating how a genuine timber sash window operates, built for period properties where the original sliding motion matters as much as how it looks.
Features
- Spring-balanced sliding mechanism
- Tilt-in interior cleaning
- Slim authentic sightlines
- Multi-point shootbolt locking
- Acoustic glazing available
- Heritage horn detailing
Benefits
- Period-accurate appearance retained
- Full interior cleaning
- Controlled background ventilation
- Conservation area suitable
- Quieter than casements
- Reliable long-term operation
Specifications
- Material: uPVC frame
- U-value: 1.4 W/m²K
- Double or triple glazing
- PAS 24 compliant
- Tilt-in sash mechanism
- Custom colour finishes
Vertical Sliding Windows
Traditional motion, modern performance.
Sashes slide vertically within the frame, replicating how a genuine timber sash window operates, built for period properties where the original sliding motion matters as much as how it looks.
Features
- Spring-balanced sliding mechanism
- Slim authentic sightlines
- Dual gasket weatherseal
- Heritage horn detailing
- Trickle vents available
- Wide colour range
Benefits
- Period-accurate appearance retained
- Full interior cleaning
- Controlled background ventilation
- Low maintenance finish
- Quieter than casements
- Genuinely cost-effective build
Specifications
- Material: uPVC frame
- uPVC & aluminium options
- Double or triple glazing
- Multi-point locking system
- PAS 24 compliant
- Custom sizes available
Tilt and Turn Windows
One handle, two functions.
Tilt inward for background ventilation, or turn the full sash inward for cleaning and, where needed, an emergency means of escape. One handle, two genuinely useful functions built into every window.
Features
- Dual tilt-turn mechanism
- Multi-point espagnolette locking
- Child-safety restrictor optional
- Heritage horn detailing
- Slim frame sightlines
- Wide colour range
Benefits
- Period-accurate appearance retained
- Full interior cleaning
- Controlled background ventilation
- Low maintenance finish
- Quieter than casements
- Genuinely cost-effective build
Specifications
- Material: uPVC frame
- uPVC & aluminium options
- Double or triple glazing
- Multi-point locking system
- PAS 24 compliant
- Custom sizes available
Tilt and Turn Windows
One handle, two functions.
Tilt inward for background ventilation, or turn the full sash inward for cleaning and, where needed, an emergency means of escape. One handle, two genuinely useful functions built into every window.
Features
- Dual tilt-turn mechanism
- Multi-point espagnolette locking
- Full inward turn
- Child-safety restrictor optional
- Reinforced hinge engineering
- Slim frame sightlines
Benefits
- Secure background ventilation
- Easy outside cleaning
- Ideal upper floors
- Strong standard security
- Suits modern or period
- Durable everyday mechanism
Specifications
- Material: uPVC frame
- U-value: 1.2 W/m²K
- Double or triple glazing
- PAS 24 compliant
- Tilt and turn mechanism
- Custom sizes available
Window Styles
Modern Casement Windows
The most common window style for good reason, side-hung, wide-opening, and suited to almost any property type. Manufactured to your exact opening, not a stock size, and fitted by our own directly-employed team.
Features
- Multi-chamber uPVC profile
- Multi-point locking standard
- Dual gasket weatherseal
- Top or side-hung
- Trickle vents available
- Wide colour range
- Reinforced steel core
- Fusion-welded corner joints
- Low-E glass coating
- Argon-filled glazing unit
- Child-safety hinge restrictors
- Reinforced sash hardware
Benefits
- Strong adjustable ventilation
- Easy interior cleaning
- Suits most properties
- Low maintenance finish
- Solid thermal performance
- Genuinely cost-effective build
- Lower winter energy bills
- Reduced outside noise
- Stronger standard security
- Condensation resistant design
- Long-term colour retention
- Added resale value
Window Styles
Flush Casement Windows
Flush Casement Windows
Timber character without timber upkeep.
The sash sits flush with the frame, not proud of it, recreating a genuine timber look for properties where real wood isn’t practical to maintain, without losing the character.
Features
- Flush sash design
- Woodgrain foil finishes
- Heritage hardware compatible
- Deep bottom rail
- Dual gasket weatherseal
- Wide colour range
- Reinforced steel core
- Fusion-welded corner joints
- Low-E glass coating
- Argon-filled glazing unit
- Child-safety hinge restrictors
- Reinforced sash hardware
Benefits
- Strong adjustable ventilation
- Easy interior cleaning
- Suits most properties
- Low maintenance finish
- Solid thermal performance
- Genuinely cost-effective build
- Lower winter energy bills
- Reduced outside noise
- Stronger standard security
- Condensation resistant design
- Long-term colour retention
- Added resale value
Window Styles
Vertical Sliding Windows
Vertical Sliding Windows
Traditional motion, modern performance.
Sashes slide vertically within the frame, replicating how a genuine timber sash window operates, built for period properties where the original sliding motion matters as much as how it looks.
Features
- Spring-balanced sliding mechanism
- Woodgrain foil finishes
- Heritage hardware compatible
- Slim authentic sightlines
- Dual gasket weatherseal
- Reinforced steel core
- Fusion-welded corner joints
- Low-E glass coating
- Argon-filled glazing unit
- Child-safety hinge restrictors
- Reinforced sash hardware
Benefits
- Strong adjustable ventilation
- Easy interior cleaning
- Suits most properties
- Low maintenance finish
- Solid thermal performance
- Genuinely cost-effective build
- Lower winter energy bills
- Reduced outside noise
- Stronger standard security
- Condensation resistant design
- Long-term colour retention
- Added resale value
Window Styles
Tilt and Turn Windows
Tilt and Turn Windows
One handle, two functions.
Tilt inward for background ventilation, or turn the full sash inward for cleaning and, where needed, an emergency means of escape. One handle, two genuinely useful functions built into every window.
Features
- Dual tilt-turn mechanism
- Woodgrain foil finishes
- Heritage hardware compatible
- Slim authentic sightlines
- Dual gasket weatherseal
- Child-safety restrictor optional
- Reinforced steel core
- Fusion-welded corner joints
- Low-E glass coating
- Argon-filled glazing unit
- Child-safety hinge restrictors
- Reinforced sash hardware
Benefits
- Strong adjustable ventilation
- Easy interior cleaning
- Suits most properties
- Low maintenance finish
- Solid thermal performance
- Genuinely cost-effective build
- Lower winter energy bills
- Reduced outside noise
- Stronger standard security
- Condensation resistant design
- Long-term colour retention
- Added resale value
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Image Gallery
same build quality
Technical Specifications
The most common window style for good reason, side-hung, wide-opening, and suited to almost any property type. Manufactured to your exact opening, not a stock size, and fitted by our own directly-employed team.
Material
Multi-chambered uPVC frame for insulation
U-Value
As low as 1.2 W/m²K
Glazing
Double or triple glazed units
Locking
Multi-point locking system, standard
Security
PAS 24 tested and compliant
Sizing
Custom sizes to any opening
inside the frame
Engineered for performance
The most common window style for good reason, side-hung, wide-opening, and suited to almost any property type. Manufactured to your exact opening, not a stock size, and fitted by our own directly-employed team.
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
Window lever handle with a smooth, low-maintenance surface built to resist fading and finger marks.
Satin Black
Monkey-tail handle for casement openers, shaped for a firm grip and a traditional look.
Polished Chrome
Bifold door pull handle, sized for daily use and matched across every panel in the set.
White
Multi-point locking handle with reinforced internal mechanism for added day-to-day security.
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
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.
