Cortizo Sliding Doors Review: Cor Vision & UK Pricing

Cortizo is now one of the most widely specified aluminium systems brands in the UK residential market. While Schuco dominates the premium conversation, Cortizo offers comparable performance at a more accessible price point. Nowhere is this clearer than with their Cor Vision sliding door system. This review covers everything you need to know before specifying Cortizo sliding doors for your project.

Who is Cortizo?

Cortizo is a Spanish aluminium systems company headquartered in Padrón, Galicia. They are one of the largest aluminium extruders in Europe, operating their own smelting, extrusion, powder coating, and anodising facilities. This vertical integration gives them quality control that few competitors can match. The aluminium in your Cortizo door starts as raw material in a Cortizo foundry and is finished in a Cortizo coating plant.

In the UK, Cortizo has gained significant market share over the past decade, particularly in the residential sliding door and bifold door sectors. Their appeal is straightforward: European engineering and testing to the same standards as Schuco, but at consistently lower price points.

The Cor Vision Sliding Door System

Cor Vision Sliding is Cortizo's flagship sliding door range, designed specifically for large-format openings where maximum glass area and minimal frame visibility are priorities. The system is available in several configurations:

Cor Vision Sliding (Standard) - **Central junction:** 20mm at the meeting point (where two panels overlap), the slimmest junction in our Cortizo range - **Maximum panel size:** Up to 2.5m wide x 3m high - **Maximum weight per panel:** 320kg - **Glazing:** 26-30mm units (double glazed only) - **Track options:** 2-rail or 3-rail configurations - **Opening types:** Slide, tilt-and-slide

Cor Vision Plus Sliding - **Enhanced thermal break** for improved U-values - **Central junction:** 25mm at the meeting point, 5mm wider than the standard Cor Vision - **Maximum panel size:** Up to 4m x 4m - **Maximum weight per panel:** 400kg manual, 700kg motorised - **Glazing:** 36-56mm units (double or triple glazed), up to 94% glass

Thermal Performance

Thermal performance is where Cortizo Cor Vision Sliding competes directly with systems costing significantly more. The key metric is the U-value, the rate of heat transfer through the door, measured in W/m²K. Lower is better.

The Cor Vision Plus Sliding achieves U-values from 1.3 W/m²K with double glazing, which competes with the Schuco ASS 77 PD Panorama, widely regarded as the benchmark for premium sliding doors. With triple glazing, the Cor Vision Plus Sliding drops to 0.9 W/m²K, comfortably exceeding current Building Regulations and meeting the anticipated Future Homes Standard requirements.

This performance is achieved through Cortizo's polyamide thermal break technology. The aluminium frame is split into two sections (interior and exterior) connected by reinforced polyamide strips that prevent thermal bridging. The result is an aluminium door that insulates almost as well as a timber frame, without the maintenance requirements.

The 20mm Sightlines Explained

Sightlines (the visible width of aluminium when the door is closed) are one of the most important aesthetic considerations for sliding doors. Narrower sightlines mean more glass and less frame, creating a more expansive view.

The standard Cor Vision Sliding achieves a 20mm central junction at the meeting point of two panels, the slimmest junction in our Cortizo range. Cor Vision Plus Sliding sits at 25mm. To put this in context:

• Budget aluminium sliding doors: 50-80mm sightlines
• Mid-range systems: 30-40mm sightlines
• Cor Vision Plus Sliding: 25mm central junction
• Cor Vision Sliding: 20mm central junction
• Frameless glass systems: 0mm (but with significant cost and thermal penalties)

At 20mm to 25mm, the central junction becomes almost invisible from normal viewing distances. The visual impact is dramatic, particularly in large openings of 4m or more, where bulky frames can significantly reduce the sense of openness that sliding doors are supposed to provide.

When comparing to aluminium bifold doors, sliding doors inherently offer slimmer sightlines because the panels stack behind each other rather than folding into a concertina. This is one of the key reasons many architects and homeowners now prefer sliding doors over bifolds for contemporary projects.

Security Ratings

Cortizo Cor Vision Sliding doors (the standard system; Cor Vision Plus is not PAS 24 compatible) achieve PAS 24 certification, the same security standard required for Schuco systems and specified by Secured by Design. The security features include:

• Multi-point locking with hook locks at top and bottom
• Anti-lift devices preventing the panel from being lifted out of the track
• Reinforced meeting stiles to resist forced entry at the panel overlap
• Optional laminated inner pane for enhanced impact resistance
• Cylinder protection against lock snapping

For ground-floor installations and areas with higher security requirements, you can specify upgraded security glass (laminated inner pane) without affecting the door's appearance or operation. The locking hardware is concealed within the frame profile, maintaining the clean aesthetic.

Colour Options

Cortizo doors are powder-coated at Cortizo's own plant in Spain, which ensures consistent quality across the range. Standard options include:

Standard RAL Colours (no surcharge) - **Anthracite Grey** (RAL 7016) — the most popular choice by a significant margin - **Matt Black** (RAL 9005) — increasingly popular for contemporary projects - **White** (RAL 9010/9016) — standard for traditional or coastal properties - **Silver Grey** (RAL 9006) — metallic finish

Extended RAL Range Any RAL colour can be specified at additional cost; the surcharge depends on the colour chosen and the size of the order. Popular non-standard choices include:

• Bronze (RAL 8014/8017) — warm, heritage-appropriate tone
• Basalt Grey (RAL 7012) — darker, industrial aesthetic
• Signal White (RAL 9003) — brighter, cooler white than standard

Dual Colour Different colours on interior and exterior faces are available at additional cost. This allows a contemporary Anthracite Grey exterior with a lighter interior to match your room scheme.

Anodised Finishes Cortizo also offers anodised finishes (natural, bronze, black) for projects where the metallic lustre of anodised aluminium is preferred over powder coating. Anodised finishes are more scratch-resistant but offer a more limited colour range.

Cost Guide: What You Will Pay in 2026

Cortizo Cor Vision sliding doors represent excellent value in the premium aluminium sliding door market. The installed price depends on the opening width, the number of panels, the glass specification and any structural work: the larger the opening and the higher the glass spec, the higher the price. For the same opening, the three systems compared in this review sit in this order:

For current installed price ranges by opening size, see our Cor Vision sliding doors cost guide.

Cortizo typically costs meaningfully less than Schuco for equivalent specifications. This is partly because Cortizo's vertically integrated manufacturing keeps material costs lower, and partly because Cortizo's UK distribution network is more competitive.

Important cost factors include:

• Triple glazing (Cor Vision Plus only) carries a premium over double glazing
• Non-standard colours carry a surcharge over the standard RAL range
• Structural work (removing load-bearing walls, installing steel beams) is priced separately and varies widely from one property to the next
• Flush thresholds add to the cost of each door

How Cor Vision Sliding Compares to Competitors

Cortizo vs Schuco Sliding Doors

This is the comparison most homeowners research. In summary: Cortizo Cor Vision Plus Sliding competes with Schuco ASS 77 PD Panorama on thermal performance, with a slimmer central junction and a larger maximum sash size. Schuco offers a wider overall product range and more smart-home integration options. Cortizo wins on price, typically costing less for equivalent specifications. For a detailed comparison, read our Cortizo vs Schuco guide.

Cortizo vs Origin Sliding Doors

Origin is a UK-based brand with strong marketing presence but more limited engineering depth. Origin sliding doors use simpler thermal break designs and achieve higher (worse) U-values than Cor Vision Sliding. Sightlines are also wider. Origin does offer a guarantee of up to 20 years and fast lead times. Cor Vision Sliding is the better technical product; Origin suits projects where speed and simplicity matter more than performance.

Cortizo vs Budget Aluminium

Budget aluminium sliding doors from brands like Smart Systems or Aluk are significantly cheaper but compromise on thermal performance (U-values above 2.0), sightlines (40mm+), and security (not always PAS 24 certified). For a standard extension where cost is the primary driver, they serve a purpose. For a premium project where the doors are a focal point, Cor Vision Sliding is worth the investment.

Installation and Aftercare

Cortizo sliding doors should be installed by fabricators with specific experience in the Cor Vision Sliding system. The precision engineering of slim-sightline sliding doors means installation tolerances are tight: even a 2-3mm error in the structural opening can affect panel alignment and smooth operation.

At Vitrum Solutions, we are approved Cortizo installers and have fitted hundreds of Cor Vision sliding doors across Buckinghamshire, Berkshire, and West London. Every installation includes:

• Free quotation, with detailed measurements taken at survey once you go ahead
• Structural advice (and referral to our partner structural engineers where needed)
• Full installation with FENSA certification
• 10-year CPA insurance-backed guarantee
• Post-installation adjustment visit after 3 months

Frequently Asked Questions

Are Cortizo sliding doors as good as Schuco?

For most residential applications, yes. The Cor Vision Plus Sliding system competes with the Schuco ASS 77 PD Panorama on thermal performance (Uw from 0.9 W/m²K) and has the slimmer central junction (25mm vs 30mm). Schuco offers advantages in very large commercial projects and smart-home integration. For a typical UK home extension or renovation, Cor Vision Sliding delivers equivalent performance at a lower cost.

What is the maximum size for a Cortizo Cor Vision sliding door?

Individual panels can be up to 4m wide and 4m high in the Cor Vision Plus Sliding system, with a maximum weight of 400kg per panel manual or 700kg motorised. The standard Cor Vision Sliding takes panels up to 2.5m wide and 3m high at 320kg. Multi-panel configurations on 3 or 4 rails can span openings of 8m or more. For openings beyond these limits, custom engineering solutions are available.

How much do Cortizo sliding doors cost in the UK?

The installed price rises with the opening width, panel count and glass specification: a small 2-panel Cor Vision Sliding door sits at the entry point, while a large 4-panel Cor Vision Plus configuration with triple glazing sits at the upper end. The Cor Vision Plus Sliding system (better thermal performance) carries a premium over the standard Cor Vision Sliding. For current price ranges, see our Cor Vision sliding doors cost guide, or request an itemised written quote covering supply, installation and FENSA certification.

Do Cortizo sliding doors have a flush threshold?

Yes. Cor Vision Sliding doors are available with a flush threshold option that sits level with the interior and exterior floor surfaces, creating a flush indoor-outdoor connection. This requires careful specification during the building phase to ensure drainage is correctly detailed. A flush threshold adds to the overall cost of the door.

What guarantee do Cortizo sliding doors come with?

Cortizo publishes no homeowner warranty period for the hardware. At Vitrum Solutions, we add our own 10-year insurance-backed guarantee covering the fabrication, glazing, and installation. Quality hardware lasts many years with basic maintenance (annual lubrication of tracks and rollers).