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BEST OF BOTH

Aluminium Outside. Warmth Inside.

Hybrid windows pair a tough aluminium face with a warm engineered core — passive-class U-values from 0.8 W/m²K at sensible prices.

SPEND WHERE IT SHOWS

Premium Front. Practical Back.

 Aluminium on the elevations everyone sees, smart white uPVC where nobody looks — the clever spec that saves thousands without losing the look.

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HEAT-PUMP READY

Every 0.1 of U-Value Counts.

Chasing an EPC A or building beyond regs? Hybrid delivers better-than-minimum numbers without the triple-glazing premium.

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Flush Dummy-Casement Detail
The Designer Flush Look Slim, flush, symmetrical aluminium
A spectrum of finishes — dual-cOur flush front windows use a dummy-sash design so every light looks like an opening vent — a clean, balanced, high-end face from the street, for a fraction of an all-aluminium house.olour, textured and anodised.
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One Home, Two Smart Choices
One Home, Two Smart Choices
The hybrid home looks every bit the part from the kerb, performs beautifully all round, and leaves money in your pocket for the things that matter most.
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Aluminium Door, uPVC Windows
A Front Door That Makes The Statement
The most affordable way into the hybrid look: a striking aluminium front door does all the talking, paired with clean white uPVC windows throughout — maximum kerb appeal, minimum outlay.
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Architectural Performance
Engineering the hybrid standard
Architectural Aluminium, Passive-Level Warmth.
How a hybrid window works
The outside face is powder-coated aluminium: weatherproof, colour-fast, maintenance-free. Behind it sits a thermally efficient core that outperforms metal alone. The result: hybrid units reach U-values from 0.8 W/m²K without the triple-glazing premium.
Who should choose hybrid?
Self-builders chasing an EPC A. Extensions where Building Control wants better-than-minimum numbers. Anyone who loves the aluminium look but heats with a heat pump, where every 0.1 of U-value shows on the bill.
 The honest trade-offs
Hybrid frames are a touch deeper than pure aluminium, and the colour range inside is narrower. If ultimate slimness matters most, our core aluminium windows win; if ultimate warmth per pound matters, hybrid does. We quote both side by side so you can see the difference in numbers.
Choose your path
Everyday, balanced, or iconic — it's your home, your call.
Every quote covers all three so you can compare properly. Most customers go hybrid: uPVC on the majority of windows, aluminium where it really shows.
Path 1 · All uPVC
Most budget-friendly · from ~£3,800 / 6 windows
Most budget-friendly · from ~£3,800 / 6 windows
Composite front door, colour matched
A++ rated double or triple glazing
Multi-point locks, internal beading
10-year guarantee
FENSA certificate on completion
Quote Path 1
Path 2 · Hybrid uPVC + Aluminium
Best value · uPVC where practical, aluminium where it shines
uPVC windows to rear & side elevations
Aluminium bifold or sliding door at the rear
Optional aluminium front door
All in matching Anthracite Grey (RAL 7016M)
Slim sightlines where guests actually see them
Same 10-year guarantee across the whole install
Quote Path 2
Path 3 · Full Aluminium
Premium throughout — aluminium bifolds, windows & doors
Aluminium casement / sliding windows
Iconic Slim F80 bifold door option
Aluminium entrance door, RAL colour your choice
Lowest U-values, biggest glass sizes
Part L 2022 compliant throughout
Prestige look that lifts the whole property
Quote Path 3
Anthracite Grey · RAL 7016M
The colour that instantly modernises any property.
Tired white uPVC drags a whole elevation down. Anthracite Grey — the UK's most specified finish since 2019 — sharpens the lines, frames the glass properly and makes a 1970s semi look like a 2026 new-build.

We foil-bond it to the uPVC profile under heat and pressure so it won't peel, fade or need repainting. On aluminium we powder-coat it — same colour, same finish, installed side-by-side in the same week.
Get Anthracite quote
uPVC colour range
6 everyday colours — foil-bonded for life.
Heat-bonded foils with a 10-year guarantee against peel and discolouration. Same colour available in aluminium for your bifold or entrance door.
Anthracite Grey 7016M
Jet Black 9005
Cream 9001
Rosewood Grain
Black-Brown
Classic White
Path 1 vs Path 2
Where should the aluminium go?
A simple, honest comparison. You get what you pay for — but clever placement saves money and still gives you the "wow" where it matters.
Feature
Path 1 · All uPVC
Path 2 · Hybrid
Path 3 · Full Aluminium
Typical price (6 windows + rear door)
£3,800–£5,200
£5,500–£7,800
£9,000–£13,500
Rear bifold / sliding door
£3,800–£5,200
£5,500–£7,800
£9,000–£13,500
Rear bifold / sliding door
uPVC (chunkier frames)
Aluminium — slim
Aluminium — slimmest
Front door
Composite
Composite or aluminium
Aluminium
U-value (windows)
1.2–1.4 W/m²K
1.2–1.4 W/m²K
0.9–1.2 W/m²K
Maximum sash/door size
Limited
Larger at the rear
Largest — up to 3m tall
Security (PAS 24)
Yes
Yes
Yes
Colour match throughout
Yes (foil)
Yes (foil + powder-coat)
Yes (powder-coat)
Lifespan
25–30 yrs
30+ yrs
40+ yrs
Guarantee
10 years
10 years
10 years
Prices are indicative for typical West Yorkshire semis — your written quote will be exact to your sizes and specification.
Free quote · no obligation
Tell us about your project.
The more you tell us, the more accurate your quote — and the faster we can book a survey.
Your details
Full name*
Phone*
Email *
Postcode *
Address / area
Which path are you leaning towards?
Preferred path
Customer type 
Supply only or supply & fit?
 Property type
Number of windows
Supply only or supply & fit?
 Property type
What do you want to include?
Tick everything that applies — we'll price each line separately.
Material preference
Glazing
Main colour
Handle / hardware colour
U-value target
Current window age
What matters most?
Tick everything that applies — we'll price each line separately.
Top priority
Budget range
When would you like work to start?
Home survey
Preferred day 
Preferred week
Anything else?
Message
Send photos of the opening
Snap the front & rear elevations and WhatsApp them to 
+44 7538 781235
— it speeds up your quote massively.
Thank you! Your submission has been received!
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Or call  0330 043 6212 · WhatsApp  +44 7538 781235
Frequently Asked Questions
The three questions every buyer asks first
1
Is hybrid better than aluminium?
Warmer per pound; pure aluminium is slimmer — it depends what you value.
2
What U-value does hybrid achieve?
From 0.8 W/m²K, configuration dependent.
3
Same colours outside?
Yes — any RAL on the aluminium face.
START YOUR DESIGN
Ready to Future-Proof Your Home?
Get a personalized quote for your hybrid window project or compare our hybrid and aluminium systems to see the exact U-value differences for your home.
A modern kitchen featuring a white marble island and large wooden double doors.
A straight answer, not a sales pitch
The honest truth about uPVC bifolds and uPVC front doors.
We sell uPVC every day of the week — but we will tell you, candidly, where uPVC is the wrong material for the job. There are two openings in your house where we strongly recommend aluminium, even on a tight budget.
Don't do this
uPVC bifolds simply do not work.
A 2.1m-tall bifold leaf weighs 60–80 kg with double-glazing. uPVC is, fundamentally, a plastic — it flexes under that load, sags on its hinges, and twists out of square in hot weather. Within twelve to eighteen months you will be on the phone complaining of doors that drag, gaskets that miss, and gaps that whistle in the wind. Strength: aluminium is roughly four times stiffer than uPVC. Bifolds need that stiffness — the leaves must remain perfectly square, every panel, every season.

Sightlines: uPVC frames have to be much thicker just to carry the glass. You lose a third of the view to chunky white plastic.

Lifespan: a uPVC bifold rarely sees ten good years. An aluminium bifold is engineered for twenty-five plus, with 50,000 cycles tested.

Resale: a uPVC bifold actively reduces the perceived value of the rear elevation. An aluminium one adds to it. Our position: we do not fit uPVC bifolds. Not because we want to sell you something more expensive — because we are not interested in callbacks for a problem we knew was coming.
 Think twice
uPVC front and rear doors flex around the lock.
Cheaper uPVC door systems can be physically bent away from the lock keep with a crowbar — the leaf flexes enough to disengage the deadbolt without breaking the cylinder. Police forces and the Master Locksmiths Association have documented this attack repeatedly. It takes seconds. Your insurer knows it; that's why PAS 24 and Secured by Design exist.

Aluminium doors use a 60–70 mm thermally broken extrusion that simply does not flex enough to defeat the multi-point lock.

Composite doors with a GRP skin and an aluminium reinforcement bar are also a sensible step up — but pure-uPVC entrance doors should be avoided on any property worth protecting.

Insurance: some premium insurers now require PAS 24 entrance doors as standard. Ask before you buy.

Our recommendation: aluminium for the front door, aluminium for the back door, aluminium for any bifold or sliding door. uPVC saves real money everywhere else.
The clever way to spend
Aluminium where it shows. uPVC where it doesn't.
The smartest hybrid spec is not 50/50 by accident — it's deliberate. Put the aluminium where the eye lands, the security matters, and the strength is needed. Put the uPVC where the budget is best served and nobody can tell.
What the door does, instead:
Closes fully on its own door-closer. Engages all multi-point hooks & deadbolts. Reports the closure to one’s phone (silent, no notification storm).
Logs the event in the audit trail. Awaits one’s return — and recognises one in under a second.
What the door does, instead:
Closes fully on its own door-closer. Engages all multi-point hooks & deadbolts. Reports the closure to one’s phone (silent, no notification storm).
Logs the event in the audit trail. Awaits one’s return — and recognises one in under a second.
Typical saving versus full aluminium: £2,500–£4,000 on a six-window plus rear-bifold project — without losing the look at the front of the house.
Quote me both options
Want to see the aluminium side?
Take a look at our aluminium range — same company, same installers, same guarantee.
If you're leaning towards aluminium for part (or all) of the project, these pages go deeper on what's possible.
Aluminium Bifold Doors
Slim-sightline bifolds in any RAL colour. 2-pane to 7-pane configurations.
Explore bifolds
Iconic Slim F80 · Prestige
Our flagship 80mm ultra-slim bifold for high-value homes. Part L compliant.
See the prestige page
Aluminium Windows
Casement, tilt & turn and fixed lights. Slimmer frames, more glass.
Explore windows
Kitchen Extensions
Rear extensions with rooflights, bifolds and sliding doors — fully project-managed.
Explore extensions
Every quote includes
No hidden extras, no surprise invoices.
1
Home survey
Free on-site survey. We measure every opening, check lintels, photograph elevations and advise on building regs.
2
Full supply & fit
Removal of old frames, safe disposal, new install, internal making-good. You don't need anyone else on site.
3
A++ glazing
Planitherm or equivalent low-E coatings, argon-filled cavities, warm-edge spacer bars — as standard.
4
PAS 24 security
Enhanced-security locks on all windows & doors. Insurance-approved, Secured by Design specifiable.
5
FENSA certificate
Registered with FENSA so your Building Regs compliance is filed automatically on completion.
6
10-year guarantee
Frames, glass units and installation — all covered. We're still here to honour it because we're still local.
Shall we begin?
A private consultation, a complimentary site visit anywhere in the United Kingdom, and a written proposal with elevation drawings within twenty-four hours — for every opening in the residence.
Request Private Consultation
Handles, Hinges & Locks
Premium hardware, colour-matched to every frame
Each door and window is finished with market-leading hardware multi-point locking, TS007 3-star anti-snap cylinders, stainless-steel  running gear, concealed hinges, and a full range of lever, pull and  key-operated handles. Hover any handle to see it enlarge. Mix and match  to suit your home or project.
Lever - Anthracite
Lever - Anthracite
Smooth ergonomic lever in Anthracite Grey (RAL 7016M) - our most-specified door handle.
Lever - Matt Black
Lever - Matt Black
Matt Black lever for contemporary, architectural looks. Pairs with any frame colour.
Lever - White
Lever - White
Bright White lever for classic, clean interiors and traditional homes.
Lever - Polished Chrome
Lever - Polished Chrome
Polished Chrome lever - a timeless shine that suits modern and classic doors alike.
Lever - Satin Silver
Lever - Satin Silver
Satin Silver lever for a soft brushed finish that hides fingerprints.
Lever - Brushed Gold
Lever - Brushed Gold
Brushed Gold lever for a warm, premium statement. Gorgeous with Anthracite frames.
Quadra - Anthracite
Quadra - Anthracite
Square-edge contemporary lever in Anthracite Grey - clean architectural lines.
Quadra - Matte Black
Quadra - Matte Black
Matte Black square-edge lever - the ultimate modern door handle.
Quadra - Matte White
Quadra - Matte White
Matte White square-edge lever - fresh, bright, contemporary.
Quadra - Polished Chrome
Quadra - Polished Chrome
Polished Chrome square-edge lever for a mirror finish that lifts any door.
Quadra - Satin Silver
Quadra - Satin Silver
Satin Silver square-edge - subtle brushed sheen, easy care.
Quadra - Brushed Gold
Quadra - Brushed Gold
Brushed Gold square-edge lever - on-trend warm metal tone.
Window - Anthracite
Window - Anthracite
Espagnolette window handle in Anthracite Grey. Key-lockable option.
Window - Black
Window - Black
Black inline window handle - sleek and timeless. Child-safety key option.
Window - White
Window - White
White window handle for traditional and modern casements alike.
Window - Polished Chrome
Window - Polished Chrome
Polished Chrome window handle - a classic finish for any room.
Window - Satin Silver
Window - Satin Silver
Satin Silver window handle - a calm, practical, brushed finish.
Window - Brushed Gold
Window - Brushed Gold
Brushed Gold window handle - a beautiful accent on heritage windows.
Lift & Turn - White
Lift & Turn - White
White lift-and-turn handle - simple, strong, classic.
Lift & Turn - Chrome
Lift & Turn - Chrome
Chrome lift-and-turn handle - glossy, durable, easy clean.
Lift & Turn - Satin Silver
Lift & Turn - Satin Silver
Satin Silver lift-and-turn handle - brushed finish for a modern look.
Lift & Turn - Brushed Gold
Lift & Turn - Brushed Gold
Brushed Gold lift-and-turn handle - a warm luxury statement.
Lift & Turn - Anthracite
Lift & Turn - Anthracite
Heavy-duty lift-and-turn handle for patio sliders and bifold traffic leaves.
Lift & Turn - Black
Lift & Turn — Black
Black lift-and-turn handle - gym-grade multi-point gearing.
Lift & Turn — Jet Black
Lift & Turn — Jet Black
Deep matt black lift-and-turn for sliders and bifold traffic leaves.
Lift & Turn — Brushed Gold
Lift & Turn — Brushed Gold
Warm metallic statement handle for premium sliding doors.
Lift & Turn - Satin black
Lift & Turn - Satin black
Soft-sheen black that hides fingerprints on busy doors.
Lift & Turn — Anthracite Grey
Lift & Turn — Anthracite Grey
Colour-matched to RAL 7016 frames for a seamless look.
Rondo keyed handle
Rondo keyed handle
Child-safe keyed window handle - ideal for upstairs bedrooms and rentals.
Pull handle suite
Pull handle suite
Matching pull handle and escutcheon for entrance doors - bold or minimalist.
Concealed 3D hinges
Concealed 3D hinges
Hidden when closed — adjustable in three planes for a perfect reveal for life.
Multi-point locking
Multi-point locking
Anti-snap TS007 3-star cylinders, hook bolts and deadlocks on every door as standard.
Colour Range
Over 200 colours — powder-coated, textured & gloss
Hover over any swatch to see its RAL code. We finish every frame to order — matt, gloss, metallic or textured. Can't see your shade? Any RAL is available.
Anthracite Grey
RAL 7016M
Deep Black
RAL 9005T
HIPCA White
RAL 9910HG
Pastel Green
RAL 6019
Agate Grey
RAL 7038
Jet Black
RAL 9005M
Slate Grey
RAL 7015
Basalt Grey
RAL 7012
Light Grey
RAL 7035
Silver Grey
RAL 7001
Fir Green
RAL 6009
Moss Green
RAL 6005
Chocolate Brown
RAL 8017
Oxide Red
RAL 3009
Sapphire Blue
RAL 5003
Steel Blue
RAL 5011
Cream
RAL 9001
Sand Beige
RAL 1011
Anthracite Textured
RAL 7016 Matt T
Jet Black Textured
RAL 9005 T
Brushed Silver (Tex)
DB 701 T
Pewter (Textured)
RAL 7037 T
Brushed Bronze
DB 703 T
Olive Bronze
DB 604 T
Gold Metallic
AY 1050
Brushed Aluminium
AY 2050
Graphite Pearl
AY 900 M
Any RAL or BS colour available to order — just ask. Dual-colour (different inside / outside) supported on all ranges.
Explore the Range
More ways we transform homes & builds
Versatali Bifold Doors
Versatali Bifold Doors
Slim aluminium folding doors, huge glass spans, Part L ready. Supply or fit.
U-Value
1.1 W/m²K
Rating
A-B WER
Security
PAS 24
Explore bifolds
Front & Panel Doors
Front & Panel Doors
Bank-vault secure, optional ekey fingerprint entry, 120+ panel designs.
U-Value
1.1 W/m²K
Rating
A-B WER
Security
PAS 24
Explore front doors
Aluminium Windows
Aluminium Windows
Flat-flush modern casements, any configuration, 25% more glass than uPVC.
U-Value
1.1 W/m²K
Rating
A-B WER
Security
PAS 24
Explore windows
Heritage Windows
Heritage Windows
Authentic astragal bars, period look, modern Part L performance.
U-Value
1.1 W/m²K
Rating
A-B WER
Security
PAS 24
Explore heritage
Glass Internal Doors
Glass Internal Doors
Bifold, sliding or pivot. Open-plan when you want it, quiet when you do not.
U-Value
1.1 W/m²K
Rating
A-B WER
Security
PAS 24
Explore internal doors
Conservatory Roof Replacement
Conservatory Roof Replacement
Tiled, glass lantern or hybrid - reclaim your conservatory as a year-round room.
Roof U-value
from 0.15 W/m²K
Options
Tiled, glass or hybrid
Fitted
PAS 24
Explore roof replacement
Kitchen Extensions
Kitchen Extensions
Full-build rear and side extensions with trusted partner builders - concept to keys.
Build time
12–16 weeks
Service
Concept to keys
Glazing
Part L ready
Explore extensions
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Glazed Window Systems
About Us
We specialise in premium glazed doors and windows, combining modern design with lasting durability to enhance residential and commercial spaces across the UK. Crafted with precision and built to perform, our products bring light, style, and value to every project.
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Glazed Window Systems Limited
Flexspace Unit 12, Middlemore Road, West Bromwich, Birmingham, B21 0BN
© 2025 Glazed Window Systems Limited. All rights reserved.
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