Why So Many Surrey Homeowners Are Choosing Cortizo

There's something quite special about standing in your kitchen on a Sunday morning, coffee in hand, looking out at your garden through what feels like an uninterrupted wall of glass. That's the experience Cortizo sliding doors are designed to create.

Over the past few years, we've seen a real shift in what homeowners across Surrey and Hampshire are asking for. Open-plan living has become the norm, and with it comes a desire to blur the boundaries between indoor and outdoor spaces. Cortizo has become one of the most requested names in our showroom, and it's easy to see why.

These aren't just doors. They're a way of transforming how your home feels, how light moves through it, and how you use your living space throughout the year.

The Appeal of Ultra-Slim Frames

The first thing most people notice about Cortizo sliding doors is what they don't see ,  bulky frames.

With a visible frame of just 20mm at the central interlock, over 90% of the opening is pure glass. The result is an almost frameless appearance that maximises your view and floods your room with natural light.

For homes in areas like Guildford, Farnham, or Cobham where gardens are a real asset, this matters. You've invested in your outdoor space, and Cortizo doors let you enjoy it from inside your home, whatever the weather.

The slim profile also suits the clean, contemporary aesthetic that many Surrey homeowners are drawn to. Whether you're renovating a 1930s semi or building a modern extension, these doors complement rather than compete with your interior design.

How They Work: Smooth, Effortless Operation

One concern we often hear is whether large glass doors will be difficult to open and close. It's a fair question : some of these panels can be substantial.

Cortizo doors operate on precision-engineered wheels that run along stainless-steel reinforced channels in the bottom frame. Even large panels glide smoothly with minimal effort. It's one of those details you might not think about until you're using the doors every day, but it makes a real difference to how the space feels.

You can choose from two, three, four, or even six panel configurations depending on the width of your opening. Corner systems are also available, which can create a truly dramatic effect where two walls of glass meet without a mullion in between.

For those who want maximum flexibility, pocket systems allow the doors to slide completely into a wall cavity, leaving the entire opening clear. It's particularly popular for homes where indoor-outdoor entertaining is a priority.

Keeping Your Home Warm and Quiet

Surrey winters might not be extreme, but nobody wants a home that feels draughty or loses heat the moment the temperature drops.

Cortizo sliding doors come with high-performance double glazing as standard, with thermal U-values starting from around 1.3 W/m²K. In plain terms, that means they're very effective at keeping warmth inside during winter and preventing your home from overheating in summer.

For homes on busier roads or near flight paths, triple glazing is also available. This brings improved energy performance and noticeably better sound insulation : up to 41 dB of noise reduction in some configurations. That's the difference between hearing every passing car and enjoying a peaceful evening in your living room.

The glazing consists of two or three glass layers separated by thermal spacer bars, creating an insulating barrier that works year-round. It's the kind of detail that you'll appreciate every time you sit near those doors on a cold evening and feel perfectly comfortable.

Security You Can Rely On

Large expanses of glass can raise questions about security, and rightly so. Your home needs to feel safe, not just beautiful.

Cortizo doors are built with security in mind. They feature multi-point locking systems, toughened glass, and anti-theft fittings housed within robust aluminium frames. The panels themselves can weigh up to 320kg each, which speaks to the substantial construction involved.

These doors are also tested to high standards for air permeability, water tightness, and wind resistance. For exposed sites or properties in more rural parts of Hampshire, that kind of performance certification provides real peace of mind.

Customisation: Making Them Your Own

One of the things we appreciate about working with Cortizo is the range of options available to suit different homes and tastes.

The aluminium frames can be finished in virtually any RAL colour, so whether you want a classic anthracite grey, a bold statement colour, or something that matches your existing windows, it's achievable. Dual-colour options are also available : perhaps a darker shade on the exterior to complement your brickwork and a lighter tone inside to suit your interior.

Beyond colour, you can specify different glazing options including solar control glass for south-facing rooms or acoustic glass for added quiet. Handle styles, threshold options, and track configurations all offer further opportunities to tailor the doors to your specific requirements.

What to Expect from the Installation Process

We understand that having work done on your home can feel disruptive, especially when it involves creating or enlarging an opening in an external wall.

The good news is that Cortizo doors arrive pre-assembled, which helps keep installation time to a minimum. Our fitting teams are experienced with these systems and work carefully to protect your home throughout the process.

Typical lead times are around six to eight weeks from order to delivery, which allows time for the doors to be manufactured to your exact specifications. We always recommend discussing timelines early in your planning, particularly if you're coordinating with other building work.

If you'd like to see Cortizo doors in person before making a decision, you're welcome to visit our showroom where we have examples on display alongside other sliding door options.

Is Cortizo Right for Your Home?

Cortizo sliding doors suit a wide range of projects, from new-build extensions to replacement doors in existing openings. They're particularly well-suited to:

• Modern kitchen-diners opening onto patios or decking
• Living rooms where maximising garden views is a priority
• Properties where slim sightlines and contemporary design are important
• Homes where thermal and acoustic performance matter

If you're still weighing up your options, it's worth considering what matters most to you. Is it the slimmest possible frames? Maximum opening width? Enhanced sound insulation? The answers will help guide you towards the right solution.