Cortizo Sliding Doors and Bifold Doors from Glideline

If you're searching for Cortizo sliding doors or Cortizo bifold doors in the UK, Cortizo as a brand name is enjoying phenomenal success in the UK since it was first introduced around 2017. Today Cortizo has a strong reputation for sliding doors, bifold doors, windows and the more demanding architectural glazing sector.

What you may not know is that many of the doors you see promoted under different names are built around Cortizo profiles, including some of the systems we manufacture at Glideline. However, at Glideline we do things a little differently.

Based in Great Yarmouth, we supply trade professionals and approved installers across East Anglia and the UK with ultra slim sliding doors, high-performance bifolds, contemporary windows and other advanced aluminium glazing systems including re-engineered and products made with Cortizo profiles.

We’re proud to manufacture advanced aluminium glazing systems using profiles either based on or extruded by Cortizo. But what sets Glideline apart is the way we adapt, improve, and support those products for the UK trade market.

Why We Use Cortizo Profiles at Glideline

Cortizo is one of Europe’s leading aluminium systems houses, known for its innovation, product quality and architectural-grade design. Their profiles are made from true premium-grade aluminium and are extensively tested.

The Cortizo profile quality therefore allow Glideline to manufacture a collection of contemporary patio doors, windows and residential doors with enhanced manufacturing, and better performance. These profiles are also conform to the strict European and British standards such as EN 755-9 and EN 12020

At Glideline, we use a number of Cortizo systems as the base for our own products. But all are enhanced over the more standard products available from other Cortizo manufacturers.

• GS20 Sliding Door – based on a popular Cortizo platform, this system offers ultra-slim sightlines with proven structural performance.

• GS25 Sliding Door – a triple track configuration allowing multiple sliding panels for wide openings.

• GS15 Sliding Door – Cortizo extrude the profiles to our own design requirements.

• Cortizo Windows – made using Cortizo profiles and accessories

We’ve chosen to use Cortizo because the system gives us flexibility as a UK manufacturer, but we also refine, re-engineer, and finish our products in a way that suits the British market, UK Building Regulations, and installer needs.

What Makes Glideline’s Cortizo-Based Systems Different?

Unlike many UK fabricators who simply assemble off-the-shelf Cortizo sliding or bifold doors, we go further:

• Optimised for the UK market – with appropriate thermal performance, compliance, and British weather considerations.

• Re-engineered details – where needed, we adapt track configurations, fixings, and sightlines to deliver a better product.

• Trade-focused support – we work only with the trade, meaning our installer customers get full technical backup, fast lead times, and no competition from us.

• Dedicated UK manufacturing – everything is fabricated in-house at our Great Yarmouth facility, with quality control and consistency across every order.

• Strict Control Procedures - every Glideline-made product is traceable. From original sizes and profiles used, to glazing types, RAL colours, and full manufacturing specifications.

We’re proud to use Cortizo extrusions, but you’re not just buying a Cortizo door. You’re buying a Glideline product — with added value built in at every stage.

Trade Benefits: Why Installers Choose Glideline for Cortizo Products

If you’re an installer or fabricator looking for a reliable supplier of Cortizo-based sliding doors or bifolds, here’s what you get from Glideline:

• Fast, consistent UK production – all orders made at our own factory in East Anglia

• Real technical support – including wind load data, fixing advice, and help with site challenges

• Slimmer, stronger systems – we offer doors that go bigger, look cleaner, and are easier to install

• Non-competing trade service – we don’t sell retail or online direct. You’re the point of contact, always.

• True partnership – we understand your challenges, help you win more jobs, and simplify complex glazing requirements

We also help you grow your business with professional product photography, showroom samples, and trade literature on request. Whether you need Cortizo sliding doors for high-end extensions or large-scale developments, we’ve got a solution ready.

Homeowner Benefits: Cortizo Performance, Glideline Quality

If you’re a homeowner searching for Cortizo windows and doors or a complete product solution for your home, choosing Glideline-made products means:

• The best products quality – our products are hand-finished and assembled with rigorous quality control procedures at every stage.

• Unique products – flush stacking, near-silent sliding action, and the UK’s slimmest sliding door with a 15mm interlock are just three of many product innovations.

• Enhanced Components – where possible we enhance our components to give you better-made windows and doors, including overcoming design complexity and working with your builder or architect for flawless and premium quality windows and doors.

• Energy efficiency – U-values as low as 1.1 W/m²K (or better), with full compliance to Future Homes Standards and Building Regulations

• Modern aesthetics – everything is flush, frameless, and built to highlight glass, not frame

And because everything is made in the UK, lead times are shorter, installation is simpler, and aftercare is always available.

Our Commitment to Quality

At Glideline, every product is built from scratch in our substantial and high-tech UK factory. That includes CNC machining, precision cutting, glazing, hand-assembly and hand-finishing. A rigorous quality control and packaging — all done in-house.

Our commitment is to give you the best of both worlds:

• Cortizo system engineering

• Glideline manufacturing expertise

• Improved Cortizo products

• The best possible trade service

You don’t just get windows and doors. You get the confidence of working with a trusted UK manufacturer who stands behind every product we make for your homeowner customers.

Glideline UK Ltd. Serving East Anglia and Beyond

We manufacture and supply Cortizo aluminium sliding and bifold doors to trade partners throughout East Anglia, including:

• Great Yarmouth

• Norwich

• Cambridge

• Ipswich

• Colchester

• Bury St Edmunds

• And across the wider UK via our network of trained and approved installers

Glideline is trusted by installers across East Anglia and beyond for reliable manufacturing, fast lead times, and exceptional trade support.

Get in touch with us to discuss your next project or becoming a trade partner.