Sliding Patio Doors

Sliding Patio Doors with Korniche Technology

For the trade, it is a game-changer. Delivered pre-assembled with crimped, bonded mitred corners, this system completely removes the traditional hassle of patio glazing. Armed with patented Korniche installation tech, installers can wrap up jobs on-site in record time.

The Korniche Speedbead Advantage for Sliding Doors

Glazing large inline patio panes used to be a tedious, multi-hour balancing act. The Cortizo 4700 fixes this completely by integrating the patented Korniche Speedbead system.

Glazed in Seconds: Say goodbye to wrestling with stubborn wedge gaskets around heavy glass units. Once the double or triple glazed unit is sat in the profile, the rigid bead simply taps into place with a soft mallet.
Pre-Fitted Slimline Seals: The seals are hidden cleanly within the frame channels, entirely removing bulky rubber borders to give your clients the absolute maximum visible glass area.
Non-Destructive Removal: Unlike traditional uPVC or basic aluminium systems, the Speedbead can be easily unclipped and replaced in the future without bending the profile or scratching the paint finish.

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2-Sash Sliding Door / Sliding Right

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2-Sash Sliding Door / Sliding Left

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2-Sash Sliding Door / Sliding Both

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3-Sash Sliding Door / Centre Sliding Right

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3-Sash Sliding Door / Centre Sliding Left

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3-Sash Sliding Door / Sliding Left

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3-Sash Sliding Door / Sliding Right

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3-Sash Sliding Door / All Sashes Slide

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4-Sash Sliding Door / Central Opening

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4-Sash Sliding Door / All Sashes Slide

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6-Sash Sliding Door / Central Opening

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Cortizo 4700 Sliding Patio Doors

The Cortizo 4700 in-line sliding patio door system is the UK's leading solution for maximizing expansive glass views without compromising structural strength. By fusing the proven reliability of the Cortizo inline frame with cutting-edge Korniche engineering innovations, this premium sliding door delivers ultra-slim sightlines, effortless roller performance, and unparalleled security.

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Ultra-Slim 47mm Central Interlock

Engineered specifically for homeowners wanting an unobstructed view of the outdoors. The structural central interlock profile measures just 47mm wide, creating beautifully slim, contemporary sightlines that easily outperform traditional bulky timber or uPVC patio frames

High-Strength PAS 24:2022 Security

Tested rigorously to meet the strict PAS 24:2022 security standard. The door sets feature heavy-duty dual shoot-bolts guided by fibre-reinforced tracks. To prevent forced entry, the bespoke lockable handle incorporates an innovative anti-backdrive mechanism: even if left unlocked, external manipulation cannot rotate the handle mechanism from the outside.

Integrated Streamlined Trickle Vents

Avoid the hidden costs and messy aesthetics of bulky frame extenders. The adjustable slimline aluminium trickle vents are machined directly into the head of the outer frame profile. This ensures clean, uniform sightlines that fit effortlessly beneath the internal plaster line while easily meeting Document F compliance.

Effortless Rolling Action

Despite handling heavy oversized glass units, the sliding sash glides with a single touch. The tracking system is engineered with premium marine-grade stainless steel rails, paired with hardened wheels and sealed rail bearings to prevent flat spots, dips, or catching over long-term seasonal use.

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Configuration & Track Layouts

The Cortizo 4700 system offers exceptional project flexibility, supporting 2, 3, 4, or 6-sash configurations across double or triple track arrangements to suit any structural design.

Maximum Openings: Spans structural apertures up to 6400mm wide.
Sizing Capacity: Sashes can be specified up to 2500mm high and 2500mm wide.
Panel Versatility: 1 to 7 panels, with individual sashes up to 1.25m wide.
Thermal Options: Fully accepts high-efficiency 28mm double-glazed or 36mm triple-glazed sealed units with deep polyamide thermal breaks to easily hit Document L criteria.

Stock & Bespoke Frame Colours

Available in our core short-lead stock choices, or fully customised across more than 150 bespoke RAL colours in matt, satin, gloss, or dual-colour variants:

Stock Choices: Gloss White (RAL 9910), Matt Anthracite Grey (RAL 7016), and Matt Black (RAL 9005).
Dual Stock Finishes: Anthracite Grey on White, Black on White, or Agate Grey on White.
Dual Stock Finish: Matt Anthracite Grey externally with a crisp Gloss White internally.

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Technical Specifications

Central Interlock Width: Ultra-slim 47mm sightline profile
Glazing Compatibility: 28mm double glazing or 36mm triple glazing
Frame Track Depths: 120mm Double Track
Security Certification: PAS 24:2022 accredited with anti-backdrive locking
Building Regs Compliance: Fully compliant with Document L and Document F
Hardware Finishes: White, Grey, Black, Polished Chrome, or Brushed Stainless Steel