INSIDE STORY

Divide the Space. Not the Light.

Elegant glass internal doors and screens that zone your rooms while letting daylight flow through the whole floor of your home.

01
/
04
BROKEN-PLAN LIVING

Open Plan, When You Want It.

 Slim-framed glazed partitions and doors create quiet snugs, home offices and dining spaces — without ever making rooms feel smaller.

02
/
04
DESIGNER DETAIL

The Finishing Touch Architects Love.

Black-framed, steel-look or minimal — made to measure for your opening and fitted cleanly by our own installation team.

03
/
04
INSIDE STORY

Divide the Space. Not the Light.

Elegant glass internal doors and screens that zone your rooms while letting daylight flow through the whole floor of your home.

04
/
06
INSIDE STORY

Divide the Space. Not the Light.

Elegant glass internal doors and screens that zone your rooms while letting daylight flow through the whole floor of your home.

05
/
06
INSIDE STORY

Divide the Space. Not the Light.

Elegant glass internal doors and screens that zone your rooms while letting daylight flow through the whole floor of your home.

06
/
06
White left-pointing arrow icon on a dark background.
White right-pointing arrow icon on a dark background.
Slim profile
Maximum glass, minimum frame - clean architectural lines.
Internal bifold or sliding
Stack flat when open, silent when closed.
Critall-style grid option
Classic heritage/industrial grid with astragal bars.
Acoustic glass option
Separate home office from family noise.
Why our internal glass doors win on every count
Unlike external doors, internal glass doors do not have a Part L requirement - but that is where cheaper products cut corners. Thin profiles flex, cheap hinges drop over time, and light-weight glass sings when slammed. Our aluminium internal glass doors use the same 58 mm frame, the same stainless-steel running gear, and the same concealed 3D hinges as our external ranges - because your internal doors get used ten times a day, every day, for the next 25 years.

Want to separate a home office for Zoom calls? Specify acoustic 6.8 mm laminated glass. Want industrial Critall look? Add the astragal bar grid. Want true luxury? Pivot doors up to 1.2 m wide that close with a soft-close damper. Your home - your rules.
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
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
PANE/LEAF:
RAL colour preference (frames)
Handle & hinge colour
Style: [View from Outside]
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?
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.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
By submitting this form you agree we can contact you by phone, email or WhatsApp about your enquiry. We never share your details.
Why choose us
Engineered for the UK - homeowners, builders and installers
1
Bifold, sliding or pivot
Internal bifold 2 to 6 leaves, sliding pocket, or dramatic pivot.
2
Slim aluminium
Same premium frame as our external ranges - no flex.
3
Critall grid option
Astragal bars for the industrial/heritage look.
4
Acoustic glass
Laminated 6.8 mm for home-office peace and quiet.
5
Soft-close dampers
No slammed doors, no angry children.
6
Floor-track or top-hung
Top-hung sliding for a clean floor line - no trip hazards.
7
Any RAL colour
Matt black, anthracite, white, dual-colour - no surcharge.
8
Custom sizes
Up to 3 m tall, up to 6 m wide - any geometry.
9
10-year guarantee
Frames, hardware and gaskets - engineered for daily use.
Real photography
Internal glass doors inside real UK homes
Interior-only photography of internal glass doors fitted between kitchens, snugs, home offices and hallways. Summer-day lighting shows exactly how the doors move light around the house.
Interior-only photography - slim aluminium frames disappear against the wall so light flows from room to room.
Critall-style internal bifold with bonded astragal bars - the hottest interior trend of the last five years, delivered in aluminium.
Same premium stainless-steel running gear and concealed 3D hinges as our external ranges - built for daily use, for decades.
Projects
Recent installations
A small selection of recent work. Ask for our full portfolio on your site visit.
Kitchen-snug divide, Edgbaston
4-leaf internal bifold, Jet Black with heritage bars
Home office, Harborne
Sliding pocket door with acoustic glass, Anthracite
Hallway feature, Sutton
Pivot door, 2.4 m tall, Brushed Bronze
Interior view of a classic hallway with slim-frame black aluminium multi-pane windows.
Dining room, Solihull
Critall-style grid, 3-leaf fold, Jet Black
Studio flat, Birmingham
Internal bifold separating sleeping and living areas
Green sliding doors separating a hallway from a cozy living room with a fireplace.
Country home, Warwickshire
Heritage-bar internal sliding door, Heritage Green
What clients say
Trusted by homeowners & builders across the UK
"We fitted an internal bifold between the kitchen and snug. Open = huge family space. Closed = quiet movie room. Genius."
Laura B.
Homeowner, Edgbaston
"Specified GWS internal glass doors on four recent projects. They make a modest-sized house feel twice as big - and the Critall-grid option is the current darling of my clients."
Tom L.
Architect, West Midlands
"My home office needed to be quiet during Zoom calls but I hated the solid door shutting me off from the family. The acoustic-glass slider is perfect - light, silence, connection."
Dev M.
Homeowner, Harborne
Buyer's guide
internal glass doors that change how your home feels
Internal glass doors are one of the smartest upgrades a homeowner can make. They create light where there was none. They divide rooms when you need quiet, and they vanish when you need open space. This guide explains the three main types, the glass options, and the finishing details that make or break the look.
1
Why put glass doors inside the house?
uPVC windows dominate the UK market because they are cheap and easy to fit. But uPVC frames are thick - a typical uPVC window has 70 mm of frame around every pane. Aluminium is stronger so our frames are thinner. You get about 25 percent more glass for the same opening. More glass means more light and a better view. Aluminium also does not yellow in sunlight, does not warp in heat and does not go brittle in frost. It lasts 25 years plus with zero maintenance.
2
Sliding, bifold, pivot or hinged — which one?
Part L of Building Regulations sets a ceiling on how much heat can pass through your windows. The current minimum is 1.4 W/m²K. Many older windows are 2.8 or worse - which is why they feel cold to the touch in winter. Our aluminium windows come in at 1.2 W/m²K as standard. Upgrade to triple glazing and you drop to 0.8 W/m²K. That is passive-house territory and an instant win on your EPC rating.
3
Do internal glass doors block sound?
A flush window has the opening sash level with the outer frame. Viewed from outside the window looks like a single flat pane. It is the defining modern aluminium look. A stepped window has the sash sticking out slightly, like the old-fashioned wooden casements. Stepped suits Edwardian and Victorian properties in conservation areas. Flush suits modern new-builds, side returns, and rear extensions. We do both - just ask.
4
Bifold, sliding or pivot - which is right for your room?
Top hung opens outwards from a top hinge. It sheds rain, works over kitchen worktops and is fine for escape windows. Side hung opens outwards from a side hinge and gives the widest possible opening - good for fire escape in bedrooms. Tilt and turn is a continental system where the window tilts inwards at the top for trickle ventilation, then turns inwards on a hinge to clean both sides from indoors. French casement has two sashes opening outwards with no central mullion visible when open, for a clean, wide view. Fixed is non-opening and cheap per square metre - great for large picture windows above stair landings.
5
How wide can internal doors go?
Standard is a double-glazed sealed unit with warm-edge spacers. Upgrade options include acoustic laminated glass for noisy roads, solar control glass to reduce summer glare, self-cleaning glass that uses rain to wash away dirt, obscured glass for bathrooms, and triple glazing for passive-class thermal performance.
6
Top-hung or floor-track?
Any RAL colour — over 200 shades in matt, gloss, metallic or textured, with no surcharge. Anthracite Grey (RAL 7016) is the UK favourite. Dual-colour lets you run anthracite outside and white inside — our most requested mix. Every frame is powder coated to order in the UK.
7
Acoustic glass for home working
Every window ships with PAS 24 certification - the British anti-break-in standard. You get key-lockable handles, anti-lift rollers, internal glazing beads, and multi-point shoot bolts. Child-safety restrictors come as standard on opening sashes above ground floor.
8
Critall-style grid for the industrial look
Made-to-measure windows are typically fabricated in 4 to 6 weeks from survey. Install is quick: a single window takes a morning; a whole three-bed house takes one to two days. Old windows come out one at a time, so your home is never open to the weather. Need it faster? Tick priority service on the quote form and we will put extra staff on your order.
7
Frameless or framed?
Every window ships with PAS 24 certification - the British anti-break-in standard. You get key-lockable handles, anti-lift rollers, internal glazing beads, and multi-point shoot bolts. Child-safety restrictors come as standard on opening sashes above ground floor.
8
Colours and finishes
Made-to-measure windows are typically fabricated in 4 to 6 weeks from survey. Install is quick: a single window takes a morning; a whole three-bed house takes one to two days. Old windows come out one at a time, so your home is never open to the weather. Need it faster? Tick priority service on the quote form and we will put extra staff on your order.
7
Soft-close and slow-close
Every window ships with PAS 24 certification - the British anti-break-in standard. You get key-lockable handles, anti-lift rollers, internal glazing beads, and multi-point shoot bolts. Child-safety restrictors come as standard on opening sashes above ground floor.
8
Installation
Made-to-measure windows are typically fabricated in 4 to 6 weeks from survey. Install is quick: a single window takes a morning; a whole three-bed house takes one to two days. Old windows come out one at a time, so your home is never open to the weather. Need it faster? Tick priority service on the quote form and we will put extra staff on your order.
7
Costs and lead time
Every window ships with PAS 24 certification - the British anti-break-in standard. You get key-lockable handles, anti-lift rollers, internal glazing beads, and multi-point shoot bolts. Child-safety restrictors come as standard on opening sashes above ground floor.
8
Book your quote
Use the form above. Tell us which room you want to divide and attach a phone photo on WhatsApp - tap the green upload button in the form or scan the QR code. We come back within 24 hours with a quote and a couple of layout suggestions.
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
Bifold Door FAQs
Everything You Need to Know About Our Glass Internal Doors
1
How much do glass internal doors cost?
Made to measure. The final price depends on the size, glass specification and opening style you choose. Every quote is free and itemised, so you know exactly what's included before you order.
2
Can I get the Crittall look?
Yes. We offer bonded astragal bars in a wide range of grid layouts to create the classic Crittall-style appearance. Jet Black is the most popular finish, but any RAL colour is available.
3
Is the glass safe for children?
Yes. All of our internal glass doors are supplied with toughened safety glass as standard for strength, durability and everyday peace of mind.
See it in action
Internal glass bifold in a kitchen-snug divide
Watch a 4-leaf internal bifold disappear into the wall in under 4 seconds - opening up the kitchen to the snug when guests arrive, closing it off when the kids are in bed.
Woman in a white dress standing in a garden beside a sunroom extension.
Heritage style option
Love the astragal grid? See the full Heritage range
If you are picking an internal door because of the Critall-style bars, you will love our full Heritage Windows collection. Same slim aluminium frame, same bonded astragal-bar detail, but designed for the outside of the house - a way to carry the heritage grid across every elevation of your home.

Full Heritage Windows come in Georgian, Victorian, Critall, astragal and bespoke bar layouts. Listed-building-ready, Part L compliant, 25-year life. Browse the complete range below.
Two-story brick house with dark window frames and a landscaped front yard.
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
White arrow on dark background.
Join Our Newsletter
Be the first to know about new product launches, design inspiration, and exclusive offers. Stay connected with the latest in glazed door trends and expert tips — straight to your inbox.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Glazed Windows Logo
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.
Contact Us
Location Icon
Glazed Window Systems Limited
Flexspace Unit 12, Middlemore Road, West Bromwich, Birmingham, B21 0BN
© 2025 Glazed Window Systems Limited. All rights reserved.
Get it on Google Play badge. Download on the App Store badge.
WhatsApp icon Chat icon glazed windows
Phone Glazed Windows
Contact Us
Download
Download
White left-pointing arrow icon on a dark background. White left-pointing arrow icon on a dark background.

c

We use cookies to improve your experience, analyse site traffic, and personalise content. By clicking "Accept", you consent to our use of cookies.