Korniche Cortizo 4700 Aluminium Sliding Door

Korniche Cortizo 4700 Sliding Door

The Korniche Cortizo 4700 Sliding Door delivers a perfect balance of performance, style, and value. Designed with strong aluminium profiles, expansive glass panels, and flexible multi-track configurations, it floods your home with natural light while creating a seamless connection to outdoor spaces. Ideal for homeowners seeking a modern, low-maintenance sliding system, the 4700 offers bespoke sizes, finishes, and configurations without compromising on security, durability, or energy efficiency. With U-values as low as 1.5 W/m²K, it ensures year-round comfort and helps reduce energy costs.

Key Benefits

Balanced aluminium profiles provide strength and stability while maximising glass area for bright, airy interiors
Exceptional value, combining premium design and performance at a competitive price point
Multi-track options enable wide, uninterrupted glass panels and flexible layouts
Smooth, precision-engineered sliding system for effortless daily operation
High-security multi-point locking system with reinforced aluminium frames for peace of mind
Excellent thermal efficiency with thermally broken frames, weather-tight seals, and U-values as low as 1.5 W/m²K.
Wide choice of colours, finishes, and configurations for bespoke style
Backed by a 10-year manufacturer’s guarantee for lasting performance and confidence

Why Choose Essex Bi-Fold?

Origin Premium Partner

Origin Premium Partner and approved Korniche installer - trusted for quality

Local expertise

Our expert team provides tailored guidance and works closely with you to deliver a smooth, detail-focused project from start to finish.

Precision Installation

With precision installation, we fit aluminium systems that enhance your home and deliver lasting performance.

Workmanship

Backed by a workmanship warranty and dedicated aftercare service for complete peace of mind

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Jeanette White

"The Bi-fold doors are amazing. The showroom has a few full set-ups which allowed me to have a good look and try it out before deciding. "

Raymond Law

"We visited Essex Bi-Fold doors and met with Clive and were impressed with there showroom and expertise. The doors we ordered look great, and the quality is excellent. "

Lester Wadden

"Essex Bi-fold Replaced our two old Kitchen roof windows with new Korniche roof lanterns. The whole experience, from initial enquiry to completion of installation, was excellent. The design of the new windows is so much more efficient, allowing more light into the kitchen."

Vicky Knight

"Wonderful experience from start to finish. We purchased Origin Bi-folds from Essex Bi-Folds August 2025. Easy to purchase, great showroom with lots of options, good price, amazing quality. "

The Bootlegger

"Great service and communication. OS-29 sliding door went in without issues. We’re really glad we found Essex Bi Fold as they’ve been on point. Loving the door quality and look. Feels very strong, door glides open with ease. 10/10."

Karen Scarsbrook

"Highly recommend this company. Everyone we dealt with from Lee in the office, his manager and the installers were extremely nice and super helpful - going the extra mile to get the finish we desired. "

Paul Marsh

"Absolutely fantastic team Clive Lee and the guys couldn't do enough for you. The difference its made to our lives is insurmountable."

Recent Projects

Real projects, real results - crafted with precision and care

Explore our latest projects featuring bi-fold doors, sliding doors, entrance doors, and windows - transforming homes with light, space, and modern design, all crafted with precision and care.

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A Modern Touch for a Countryside Classic

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Open-Plan Garden Transformation

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Beaumont Hall Barns Restoration

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High Spec Essex Development

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Chelmsford Conservatory Transformation

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Light-Filled Kitchen Extension

Questions? We’re Here to Help

Find answers about our services - or ask us anything you don’t see.

How does the 4700 Sliding Door bring light into my home?

The Cortizo 4700’s large glass panels and balanced aluminium frames flood interiors with natural light, creating an open, modern aesthetic.

Is the Cortizo 4700 a cost-effective option?

Yes. It delivers premium aluminium construction, smooth operation, and customisation options at a highly competitive price.

Can the 4700 be customised to suit my property?

Absolutely. Every door is made to measure, with bespoke panel sizes, multi-track configurations, colours, and finishes.

What thermal efficiency does the 4700 Sliding Door offer?

With thermally broken frames, weather-tight seals, and high-performance glazing, the 4700 achieves U-values as low as 1.5 W/m²K for comfort and energy savings.

How secure is the Cortizo 4700?

Multi-point locking, reinforced frames, and robust hardware provide excellent security for peace of mind.

Can the 4700 accommodate wide openings?

Yes. Its multi-track design allows expansive, uninterrupted glass panels, perfect for seamless indoor-outdoor living.

Is the 4700 suitable for exposed or coastal locations?

Yes. Premium aluminium construction and advanced weatherproofing ensure durability even in challenging environments.

What warranty is included with the Cortizo 4700?

Every sliding door comes with a 10-year manufacturer’s guarantee, giving confidence in long-term performance.