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Prefer to chat? Call 0330 043 6212 or WhatsApp +44 7538 781235. Send a photo of your opening — we’ll often ballpark a price within the hour.
Seven product ranges, one expert team
From slim aluminium bifolds to bank-vault secure entrance doors and full kitchen extensions — every product is Part L compliant, PAS 24 secure, and built to last.
Slim aluminium folding doors, huge glass spans, Part L ready. Supply or fit.
Bank-vault secure, optional ekey fingerprint entry, 120+ panel designs.
Flat-flush modern casements, any configuration, 25% more glass than uPVC.
Authentic astragal bars, period look, modern Part L performance.
Bifold, sliding or pivot. Open-plan when you want it, quiet when you do not.
Tiled, glass lantern or hybrid — reclaim your conservatory as a year-round room.
Full-build rear and side extensions with trusted partner builders — concept to keys.
Ten reasons homeowners, builders and architects pick Glazed Window Systems
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Aluminium only
We have chosen to specialise. We live and breathe aluminium systems — not a catch-all uPVC plus timber plus aluminium shop.
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Part L as standard
Every product ships Part L compliant. You never have to ask for upgraded glass to pass building control.
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PAS 24 security
Every external door is independently tested against break-in — insurance-ready on day one.
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Any RAL colour
Over 200 standard finishes including textured and dual-colour — no surcharge on normal colours.
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Trade supply-only
Builders and installers get trade pricing, technical packs and a dedicated phone line.
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Full-fit service
Our in-house installers handle measure, install and aftercare — one guarantee covers everything.
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Fixed-price quotes
What we quote is what you pay. No end-of-job “extras” invoice.
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10-year guarantee
Frames, hardware and gaskets covered for a decade, tested to 25+ years of service life.
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UK-wide delivery
Birmingham base, trade and retail delivery nationwide. WhatsApp, phone or email.
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Real portfolio
50+ recent builds to show you on the visit. No stock photos — real jobs with real clients.
How a project runs — from first call to final clean
Phone, WhatsApp or the quote form. Share photos, plans, or just a rough idea of what you need.
Free no-obligation visit. We measure, look at the detail and show you our portfolio on the iPad.
Fixed-price quote within 24 hours of the visit. Line-by-line — no hidden extras.
Staged payments against milestones. Small deposit, then payments as materials and work are delivered.
Frames fabricated in the UK. Typical lead time 4–6 weeks. Priority service available for urgent jobs.
Our team arrives, installs, tests, adjusts, cleans up and hands over. 10-year guarantee issued.
We can fit them for you — or your builder can
Three ways to work with us, all backed by the same 10-year guarantee.
Measure, manufacture, install, test, hand over. One team, one guarantee, one contact from start to finish.
Trade pricing, technical packs, dedicated phone line. Your builder fits — we deliver UK-wide.
We fit the tricky stuff (bifolds, lanterns) and supply the rest. Common on full house jobs.
What Our Customers Say
“Massive bifold across the back of our kitchen extension. Slim frames, smooth runner, the whole rear wall opens out. Fitted in a day. Brilliant team.”
“I supply-only on most of my builds. Glazed Window Systems are my go-to — packs are clear, deliveries are on time, and trade pricing is fair.”
“Full renovation — windows, front door with fingerprint entry, internal pivot doors. Looks incredible. Worth every penny.”
Premium hardware, colour-matched to every frame
Smooth ergonomic levers, square-edge Quadra handles, espagnolette window handles and lift-and-turn options — in Anthracite, Matt Black, White, Polished Chrome, Satin Silver and Brushed Gold.
Smooth ergonomic and Quadra square-edge styles in 6 finishes — our most-specified hardware.
Espagnolette and inline window handles. Key-lockable and child-safety key options available.
Simple, strong, classic — for tilt-and-turn windows. Six finishes to match any frame.
Multi-point locking on every external door. Optional ekey fingerprint entry for front doors.
One team, one guarantee, one mission — every UK home sealed in aluminium
Glazed Window Systems Ltd is a West Midlands aluminium door and window specialist. We were founded on a simple idea: the UK home deserves better glass. We wanted to make slim, secure, thermally excellent aluminium the first choice for every self-builder, every extension, every full renovation, and every forward-looking developer.
We operate from a dedicated fabrication and distribution base in Birmingham, delivering across the UK. We supply builders and installers on supply-only terms with trade pricing. We also run an in-house install team for homeowners who want a stress-free start-to-finish job — and we partner with a hand-picked network of builders for full kitchen extensions, side-return builds, two-storey extensions, and conservatory roof replacements.
Everything we sell is Part L compliant. Every door is PAS 24 secure. Every frame is powder coated for a 25-year life. Every installation carries a 10-year guarantee. Beyond the basics we compete on detail — concealed 3D-adjustable hinges, triple gaskets, flush thresholds, astragal bar bonding, soft-close dampers, ekey fingerprint options on front doors.
Ready to transform your home or project?
Quick quote, free site visit, written quote in 24 hours. Homeowners and trade both welcome.
