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CHARACTER, PERFECTED

Period Charm. Modern Performance.

Steel-look aluminium doors and windows that keep the character of your period home — with the warmth, security and low upkeep of today.

Get My Free Quote View Heritage Styles
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SLIM STEEL LOOK

The Crittall Look. Without the Cold.

Fine sightlines and elegant glazing bars recreate classic steel frames — while thermally broken aluminium keeps the draughts firmly outside.

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Price My Heritage Project See the Technical Details
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SYMPATHETIC UPGRADES

Respect the Past. Upgrade the Future.

 Ideal for cottages, conversions and conservation-conscious renovations — surveyed, specified and installed with genuine care for the original building.

Book My Free Survey
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Read the Guide
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Authentic Heritage Styling

Crittall style. Cottage charm. Georgian grace.

Every bar layout, matched to your street from a photo.

Get My Free Quote MATCH MY WINDOWS
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Authentic astragal bars
Slim, period-correct bars bonded to the glass.
Part L compliant
U-values from 1.2 W/m²K - listed-building approved.
Any bar layout
Georgian, Victorian, astragal or Crittall grid.
Any heritage colour
Off-white, cream, heritage green, black.
Part L ready - even on listed and conservation projects
Most period windows are single-glazed and hopelessly inefficient. Part L now requires 1.4 W/m²K on replacements - even on character homes where planners insist the window looks authentic. Our heritage aluminium windows give you both: an authentic astragal bar grid on the outside face of the glass, with 1.2 W/m²K double glazing behind it. Conservation officers approve the look; building control approve the numbers.
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Why choose us over traditional timber sash heritage windows? Ours will not rot, will not need repainting every 3 years, and last 25+ years with zero maintenance. And because the aluminium frame is so slim, you get more glass than a timber heritage window - more light into the room.
Free, No-Obligation
Get Your Free Quote Today
Prefer to chat? Call 0330 043 6212 or WhatsApp +44 7538 781235.
Your details
Full name *
Phone Number *
Email *
Postcode *
First line of address *
Your choices - pick one per row
Home owner or builder / installer?
Homeowner
Home Owner Builder / Installer
Supply only or supply & fit?
Supply only
Supply & fit
Double glazed or triple glazed?
Double
triple
Property - residential or commercial?
Residential
Commercial
Aluminium or uPVC?
Aluminium
uPVC
Colour & thermal preferences
SIZE: Width
Size : Height
RAL colour preference (frames)
Handle & hinge colour
QUANTITY: Windows
QUANTITY: Doors
Tick any that apply - we will factor them into the quote
Book a free site visit
Preferred date & time
DD / MM / YYYY
Or pick a free slot in our live calendar:
Calendly booking page
(syncs with Google Calendar).
When does the project start?
Planned start date
DD / MM / YYYY
Anything else we should know?
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Send photos of the opening
Scan the QR code with your phone camera, then send photos and videos on WhatsApp — it's the fastest way to price your project.
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Why choose us
Engineered for the UK - homeowners, builders and installers
1
Authentic astragal bars
Bonded to the outside of the glass - period-correct and slim.
2
Any bar layout
Georgian 6-over-6, Victorian 2-over-2, Crittall, arched - we do it all.
3
Part L compliant
1.2 W/m²K as standard, even with the heritage bar.
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Listed & conservation approved
Slim frame reads just like original joinery.
5
Heritage colours
Off-white, cream, heritage green, sage, anthracite, black.
6
Flush-sash casement
The opening pane sits flush - unlike any modern uPVC.
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Secured by Design
PAS 24 tested, anti-lift rollers, key-lockable handles.
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Matching heritage doors
Complete the look with our heritage entrance door range.
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10-year guarantee
Frames, hardware and gaskets.
Real photography
Heritage windows in real period and conservation homes
Real UK installations of our astragal-bar heritage windows - Victorian terraces, Georgian town houses, Cotswold cottages and character new-builds. Shot on bright summer days so you can see the shadow the bars cast on the glass.
Black aluminium cottage windows with astragal bars on a traditional stone house exterior.
Bonded astragal bars on the outside of the glass give an authentic Victorian or Georgian look that planners approve on sight.
Historic brick building with newly re-glazed heritage aluminium windows.
Entire elevations re-glazed in heritage aluminium - same slim sightlines as original joinery, no rot, no repainting.
Interior view of a classic hallway with slim-frame black aluminium multi-pane windows.
From inside the room the slim frame and thin bars recreate the light and feel of an original window.
Projects
Recent installations
A small selection of recent work. Ask for our full portfolio on your site visit.
Stone cottage, Cotswolds — 6-over-6 Georgian bars, Heritage Green
Stone cottage, Cotswolds
6-over-6 Georgian bars, Heritage Green
Listed cottage, Cotswolds - Astragal 2-over-2 bars, Cream finish
Listed cottage, Cotswolds
Astragal 2-over-2 bars, Cream finish
Georgian restoration, Edgbaston - Full elevation - 12 heritage windows + door
Georgian restoration, Edgbaston
Full elevation - 12 heritage windows + door
Barn conversion, Shropshire — Crittall grid, Jet Black, full elevation
Barn conversion, Shropshire
Astragal-bar flush casement throughout
Period farmhouse, Warwickshire — white sash-look heritage windows, blue heritage door
Period farmhouse, Warwickshire
 White sash-look heritage windows, blue heritage door
Townhouse, Lichfield - 3-over-3 Georgian bars + heritage entrance door
Townhouse, Lichfield
3-over-3 Georgian bars + heritage entrance door
What clients say
Trusted by homeowners & builders across the UK
StarStarStarStarStar
"We live in a conservation area and the planners insisted on authentic-looking windows. GWS heritage aluminium gave us that look with double-glazed performance. Everyone who visits thinks they are original."
Clare H.
Homeowner, Moseley
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"I used to fight with timber sash suppliers on lead times and warping. GWS heritage aluminium has become my default - zero comebacks in 18 months."
James R.
Heritage builder, Warwickshire
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"We went full heritage aluminium on our barn conversion - Crittall look on black. Stunning. Every visitor asks where we got them."
Anna & Dev S.
Self-build, Shropshire
Your builder can fit them - or we will
Supply-only to trade (trade pricing, full technical pack) or a white-glove install by our in-house team. Your choice at checkout.
GET My Quote
Buyer's guide
heritage windows that pass the planner's eye
Heritage windows are a specialist product. You need a look that reads as authentic from the street, paired with modern thermal performance that passes Building Regulations. Get either one wrong and the project slows. This short guide explains the choices and common traps.
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Why heritage aluminium and not timber?
Traditional timber sash and casement windows look lovely on day one. By year three they need repainting. By year ten they often have rot at the cill. By year twenty many have warped enough that they stick. Heritage aluminium looks identical from the street thanks to the slim frame and bonded astragal bar, but it does not rot, does not warp and does not need repainting. The powder coated finish carries a 25-year life. No maintenance, no rot, no worry.
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Astragal bar vs Georgian bar - the detail that matters
Planners and conservation officers know the difference between a cheap clipped-in Georgian bar and a real astragal bar. A clipped bar sits on the glass inside the window and looks plastic. An astragal bar is bonded to the outside of the glass and has a matching internal bar - so from any angle it looks like a real muntin dividing real glass panes. It also casts a proper shadow on the glass, which is what makes an old window feel old. We use astragal as standard on this range.
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What bar layout do I need?
Georgian 6-over-6 is a top sash with 6 small panes over a bottom sash with 6 small panes - the classic Georgian town-house look. Victorian 2-over-2 is a simpler grid - two tall panes in each sash - popular from about 1860 onwards. Astragal with a single horizontal bar is an Edwardian detail. Crittall is the industrial steel-window grid of 1920s to 1950s, full of small rectangular panes and now hugely fashionable on new builds. Send us a photo of what you have and we will match it.
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Part L on a listed or conservation property
Part L still applies even on heritage properties. Replacement windows in most conservation buildings have to achieve 1.4 W/m²K or better. Our heritage aluminium achieves 1.2 W/m²K with the bar, so you are compliant every time. If your planning officer grants a single-glazed slim-unit exemption (sometimes used on Grade II* and Grade I buildings) we can also do slim-profile 10 mm argon-filled units that look like single glazing from outside.
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Listed building consent - how we help
If your building is listed you will need listed building consent before replacing windows. We have guided more than a hundred homeowners through this. We will supply drawings, elevations, product brochures, U-value tables and glass specification sheets for your planning application. For conservation-area properties you usually do not need a separate consent but the council will still want to check the design. Same pack works.
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Colours that suit period homes
Heritage Green (close to RAL 6009 Fir Green) is the most-requested heritage colour in the UK. Off-white (close to RAL 9010) suits Georgian town houses. Cream (RAL 9001) works on Cotswold cottages. Sage and Moss Green suit country homes. Jet Black suits Crittall-style and industrial conversions. Anthracite is the flexible modern choice.
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What about flush casement heritage?
A flush casement heritage window has the opening sash level with the outer frame, just like a period joinery window. It is the purest period look. We offer both stepped and flush heritage casements. Stepped suits strict conservation requirements where the planner wants the old drip-bar profile. Flush suits most other period homes and is slightly cheaper.
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Matching doors
A heritage window elevation looks best with a matching heritage entrance door. Our panel door range includes traditional moulded designs with matching astragal-bar top lights and side lights. You can have the entire elevation in one colour and one bar style - the upgrade homeowners love most.
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How to quote
Take a photo of each window as it stands today and message us on WhatsApp using the QR code or the green WhatsApp button in the quote form. Tell us how many windows, what bar layout you want, and your favourite colour. We come back with a written quote within 24 hours. If it is a listed property we can often visit and produce the consent-ready drawing pack in the same visit.
See it in action
The astragal bar - up close
See how the slim heritage bar sits flush on the outside of the glass. It is a detail that transforms a window from 'modern replacement' to 'always been there'.
BOOK A DEMO AT YOUR PROJECT
Close up of matt black Astragal Bar window
Heritage style option
Take the heritage look inside - slim glass internal doors
Astragal bars and slim black aluminium do not have to stop at the outside wall. Our matching glass internal doors bring the same Crittall-style grid into the house itself - between the kitchen and the snug, between the hall and the lounge, between the study and the family space.

Use slim internal bifolds or sliding doors with a heritage bar grid and you connect every room with light while keeping the option to close off a space when you need quiet. Same slim aluminium frame, same bonded astragal bar detail, same hardware - just sized for internal openings.
browse glass internal doors
QUOTE HERITAGE STYLE
Modern home interior featuring black steel-look internal glass doors and matching sliding doors partitioning living spaces.
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 - White
Lift & Turn — Jet Black
Deep matt black lift-and-turn for sliders and bifold traffic leaves.
Lift & Turn - Chrome
Lift & Turn — Brushed Gold
Warm metallic statement handle for premium sliding doors.
Lift & Turn - Satin Silver
Lift & Turn - Satin black
Soft-sheen black that hides fingerprints on busy doors.
Lift & Turn - Brushed Gold
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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