Cortizo offers one of the UK’s most advanced aluminium window and door ranges, from slimline sliding doors to contemporary bifolds and steel-look glazing. Chosen by Fenestration Network for its design innovation, quality, and reliability — all backed by our White Glove Service for complete homeowner confidence.

Cortizo Windows and Doors – Introduction

There is no question that Cortizo is now one of the most recognised names in the UK for slimline aluminium sliding doors and modern glazing solutions. With a long-established international reputation across Europe and globally, Cortizo products combine advanced design with engineering excellence.

The Cortizo Windows and Doors  range includes some of the most sought-after slimline sliding doors available today, alongside mid-range options that balance performance, cost, and style.

Premium-quality aluminium extrusions, precision hardware, and one of the widest selections of colours make Cortizo an outstanding choice for homeowners seeking reliability, design flexibility, and long-term value. Whether you’re upgrading existing doors and windows or planning a high-end new build, Cortizo offers proven performance and exceptional visual appeal.

Where Cortizo Windows and Doors Work Best

Cortizo products are ideal for almost any type of home improvement or architectural project. They can replace older patio doors, dated windows, or serve as the statement glazing in new extensions and self-build homes.

For renovation projects, their sliding and bifolding doors provide a transformative upgrade, delivering more light, space, and thermal efficiency. For new openings, the Cor-Vision Plus sliding door system enables architects and homeowners to achieve striking minimalism — with ultra-slim frames that can be concealed within the structure for a pure glass façade effect.

Whether you’re modernising a family home or creating a contemporary architectural property, Cortizo systems are a complete and flexible solution.

What’s in the Cortizo Range

Cortizo offers a comprehensive product suite covering almost every residential glazing requirement:

• Casement Windows
• Steel-look Windows
• Inward Opening and Tilt & Turn Windows
• Two Bifold Door Systems
• Four Sliding Door Systems
• Residential and French Doors
• Front Doors using Decorative Aluminium Panels

This variety allows homeowners and designers to create a consistent aesthetic throughout the property, using one trusted aluminium system from a single, globally respected source.

Features You’ll Appreciate Every Day

Cortizo Windows and Doors are known for their blend of engineering innovation and everyday practicality.

Their window systems include advanced features such as hidden handles, flush internal finishes, and larger opening sizes than many comparable UK systems. These details provide both design flexibility and the minimalist aesthetic that modern architecture demands.

The Cortizo bifold door range is equally impressive, offering 101mm and 120mm sightlines — among the slimmest and most balanced options in the market. These doors deliver a perfect blend of affordability, strength, and visual lightness, equally suited to homes and commercial spaces.

It is, however, the sliding door range that defines Cortizo’s reputation. In 2017, Cortizo introduced the first 20mm interlock sliding door in the UK, setting a new benchmark for minimal-frame design. Today, the range includes sliding doors and even matching sliding windows for a fully coordinated aesthetic. The flagship Cor-Vision Plus model is designed for expansive openings, with optional motorised operation for effortless use.

Why We Recommend Cortizo

At Fenestration Network, we work with a carefully selected network of both standard and premium Cortizo manufacturers. Every partner we use provides exceptional craftsmanship, but some take the Cortizo concept even further.

Through our premium partnerships, we can offer products such as the GS15 sliding door — currently the slimmest sliding door in the UK. This model represents the pinnacle of Cortizo design and demonstrates what’s possible when precision manufacturing and expert installation come together.

Our long-standing relationships with these manufacturers mean you can buy with confidence, knowing your products are made by experts who understand the system inside out.

Why Buy Cortizo Windows and Doors Through Fenestration Network

Cortizo products provide an outstanding combination of style, performance, and long-term reliability. However, the advanced design of these doors and windows demands specialist installation to ensure correct setup, smooth operation, and lasting performance.

That’s where Fenestration Network adds genuine value. We only work with trained and approved installers who have demonstrable experience fitting Cortizo products. This ensures the level of precision these systems require — avoiding the common issues seen with general builder installations or DIY projects.

When you buy through Fenestration Network, you’re not just choosing a product — you’re securing professional installation, aftercare support, and expert guidance throughout your project.

Our White Glove Service Promise

The Fenestration Network White Glove Service is designed to make the entire process seamless. As a small, independently run business with nationwide coverage, we combine the personal touch of a local specialist with the professionalism of a national brand.

Every project is handled with complete transparency — from product selection and manufacturing partner choice to final installation and aftercare. Our manufacturers are trusted names in the industry, and we maintain close communication with them at every stage, ensuring nothing is left to chance.

Choosing Cortizo through Fenestration Network means you’ll enjoy an elevated level of service, honest advice, and the assurance that every component — from frame to fitting — has been managed by experts who care about the end result as much as you do.