Systems We SpecifyCortizo Aluminium Systems

Modern aluminium. Outstanding value.

Not every project needs the specification of a commercial aluminium system. Sometimes what matters most is achieving a contemporary look, slim sightlines and excellent performance without paying for capabilities your home simply doesn’t require.

That’s where Cortizo comes in.

Aluminium sliding doors with large glass panels
Aluminium sliding doors to a garden terrace

Designed for Modern Living

Over the last decade, Cortizo has become one of Europe’s fastest-growing aluminium system houses, developing stylish, high-performance domestic aluminium systems that deliver exceptional value for modern homes.

Most homeowners aren’t designing an office block. They’re creating a home. They want rooms filled with natural light, slim aluminium frames, large areas of glass and doors that open effortlessly onto the garden.

That’s exactly what Cortizo was designed to deliver. From contemporary windows and entrance doors to bi-folding and sliding doors, Cortizo offers a complete range of aluminium systems that combine excellent design, strong performance and outstanding value.

Everything You Need. Nothing You Don’t.

One of Cortizo’s biggest strengths is knowing exactly what it is. It doesn’t try to compete with highly specialised commercial systems. Instead, it focuses on producing domestic aluminium systems that deliver outstanding appearance, excellent thermal performance and reliable everyday operation.

Depending on your project, this can include:

  • Aluminium windows.
  • Entrance doors.
  • Sliding doors.
  • Bi-folding doors.
  • Fixed glazing.
  • Double and triple glazing.
  • Slim contemporary sightlines.
  • Flush threshold options.
  • A wide choice of colours and finishes.
  • Excellent thermal efficiency and security.

For many homes, that’s exactly the right balance.

Why We Recommend Cortizo

We don’t recommend one manufacturer for every project. If we believe Schüco or Solarlux is the better solution, we’ll tell you. But many homeowners simply don’t need that level of specification.

Cortizo allows us to deliver a beautiful aluminium glazing package that looks superb, performs exceptionally well and offers outstanding value. For the right project, it’s exactly the system we’d choose ourselves.

Explore the Cortizo Range

This page provides an overview of what Cortizo can offer. If you’d like to explore the complete range, technical specifications and inspiration, you can visit the official Cortizo website.

Explore the Cortizo range

Discuss Your Project

Whether you’re extending your home, replacing tired glazing or building from scratch, we’ll help you decide whether Cortizo is the right aluminium system for your project. Bring us your ideas or your drawings and we’ll recommend the solution we believe offers the best balance of performance, appearance and value.

Discuss your project

Large aluminium sliding door panels

No FAQs available.

Our Process

Good glazing starts with good decisions.

Every glazing project is different, but the way we approach them is consistent. Our process is designed to make the important decisions early, when they are easier and less expensive to resolve.

We specify aluminium systems that best suit the building, the budget and the long-term expectations for the project.

See our full process

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1. Initial Conversation

Tell us about your project. Whether you have drawings, planning approval or simply an idea, we’ll listen first and ask the questions that need answering before recommending anything. If you’re a new client, we recommend visiting our factory early on to meet the team and see how we work.

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2. Quote & Cost Options

Using the information you’ve provided, together with any drawings, we’ll prepare a detailed quotation clearly setting out what’s included and any exclusions. Unless a particular system has already been specified, we’ll recommend the one we believe best suits the project’s design, performance requirements and budget.

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3. Order & Site Survey

Once an order has been placed, we’ll arrange a site survey. Our surveyors establish datums, measure structural openings and confirm the agreed details. We’ll also work with your builder or contractor to resolve any outstanding issues before manufacture begins. Access, logistics and installation considerations are assessed at this stage, helping prevent expensive problems later.

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4. Drawings

We’ll produce a full set of working drawings for approval. These incorporate the agreed survey details and, where required, reference site datums so structural elements provided by others are clearly identified and dimensioned.

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5. Procurement & Manufacture

Once the drawings have been approved, we’ll procure the materials and begin manufacture. We’ll then confirm the expected installation date to suit your construction programme.

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6. Professional Installation

Before installation begins, we prepare site-specific Method Statements, Risk Assessments and Lift Plans where required. Our experienced installation teams carry out the work safely and in accordance with the approved drawings. We don’t rush work simply to move on to the next job.

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7. Completion & Aftercare

Once installation is complete, we’ll inspect the finished work, make sure you’re happy with the result and remain available if you need us afterwards. Where applicable, operation and maintenance manuals will also be provided.

No stats available.

Colours Options

Whether you’re refreshing a traditional space or designing something new, we’re here to help you get the colour just right.

British Standard Colours

The BS 4800 Colour Chart is a long-established and trusted British Standard colour system, widely used across the UK.

RAL Colours

Known for their consistency and broad selection, RAL colours are ideal for both modern and traditional projects across domestic, commercial, and industrial settings.

What Our Customers Say

Hear it from the people we have worked with.

Alistair Colins 5 ★

AGS handled everything from design to installation of our sliding doors. The team were friendly, tidy, and clearly knew their stuff. The finish is flawless and has totally transformed our kitchen extension

Chloe Brown 5 ★

Our architect recommended AGS and we’re so glad they did. The aluminium glazing is solid, smooth to operate, and beautifully finished. Professional, courteous installers and excellent aftercare – genuinely outstanding service

James Watson 5 ★

For our new-build project, we needed a reliable company to design, manufacture and install all the aluminium glazing. AGS took full ownership of the package, liaising with our architect and builder. Their technical knowledge, especially around thermal performance and detailing, was excellent. The finished product is stunning and functions perfectly

Paul Hopworth 5 ★

We’re absolutely delighted with the glazing supplied and fitted by AGS. From the first survey to final sign-off, communication was clear and responsive. They went the extra mile to resolve a last-minute design change without delaying the project. The doors operate beautifully, feel solid, and the overall finish is outstanding

Peter Guilbert 5 ★

We wanted something a bit special – big slim-framed sliders, a glazed roof and frameless balustrades. AGS talked us through Schuco and Cortizo options and gave sensible advice on budget. The end result is amazing; loads of light, everything feels really solid and the neighbours keep asking who did it