Cortizo Cor Vision vs Cor Vision Plus: Which to Specify

Cortizo's residential sliding range splits into two systems that often appear in the same buying conversation: the Cor Vision Sliding and the premium Cor Vision Plus Sliding. They share the Cortizo hardware ecosystem and the same RAL palette, but they target different specifications. This guide explains the practical differences and helps you decide which Cortizo slider fits your project.

We install both across Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London, so the comparison below is grounded in current quotes we write rather than specification-sheet copy.

Quick Summary

• Cortizo Cor Vision Sliding is the slim residential slider. 20mm central junction between leaves (the slimmest junction in our Cortizo range), max sash up to 2.5m wide × 3m high at 320kg per panel, double glazed (26-30mm units). The right specification for most UK rear-extension and patio openings where the architectural priority is the narrowest sightline without moving up to the Plus tier.
• Cortizo Cor Vision Plus Sliding is the premium slider. 25mm central junction (5mm wider than Cor Vision's 20mm), max sash 4m × 4m at up to 400kg per panel (700kg motorised), glazing from 36mm to 56mm thick (double or triple), Uw from 0.9 W/m²K and up to 94% glass. The Cortizo equivalent of structural-glass aesthetics at conventional aluminium-slider cost.

Cor Vision Sliding can be specified to PAS 24:2022 (Cor Vision Plus cannot), both ship with multi-point shootbolt locking, both use anti-lift devices on the running track, and both come with our 10-year CPA insurance-backed installation guarantee. For the canonical Cortizo sliding range page see our Cortizo Sliding Doors hub.

What Is the Central Junction and Why Does It Matter?

On a sliding door, the central interlock is the visible vertical line where two leaves meet when the doors are closed. The narrower the interlock, the closer the closed door reads to a continuous glass plane.

Cor Vision Sliding has a 20mm central junction between leaves, the slimmest junction in our Cortizo range. Most homeowners find this comfortably better than the standard mass-market aluminium slider (typically 60-90mm interlocks), and the eye reads the closed door as a near-frameless glass plane rather than a slider with a visible mullion.

Cor Vision Plus has a 25mm central junction, 5mm wider than Cor Vision's, on a system built for much larger and heavier sashes. With up to 94% glass the closed Plus door still reads as a panoramic glass plane, but if the single narrowest junction is the deciding factor, Cor Vision is the slimmer of the two.

Sash Size Limits

This is the single biggest practical difference between the two systems.

Cor Vision Sliding - **Max sash: 2.5m wide × 3m high at 320kg per panel** - Suitable for the majority of UK rear-extension and patio apertures - Glazing 26-30mm (double glazed only)

Cor Vision Plus Sliding - **Max sash: 4m × 4m at 400kg per panel (700kg motorised)** - Suitable for very large apertures (typically architect-led contemporary new builds) - **Accepts glazing from 36mm to 56mm thick** (triple-glazed Low-E and acoustic-spec laminated combinations both fit)

If your aperture needs a leaf wider than 2.5m or taller than 3m, Cor Vision Plus is the only Cortizo standard slider that supports it. If you want triple-glazed acoustic-laminated combinations on the same leaf, Cor Vision Plus is also the system because of its 36-56mm glazing capacity.

Standard Slider, Not Lift-and-Slide

Both Cor Vision Sliding and Cor Vision Plus Sliding are standard sliders. The leaf rolls horizontally on a precision track and the handle operates the lock without lifting the sash. They are distinct from Cortizo's lift-and-slide system (the lift-and-slide version of the 4700 Sliding Patio), where the handle physically lifts the leaf off the seal before sliding. For Cortizo's lift-and-slide range see our Cortizo Lift-and-Slide hub.

Cor Vision Plus takes sashes up to 400kg with manual operation and up to 700kg motorised.

Thermal Performance

Both Cortizo sliding systems use thermally broken profiles. Cortizo quotes Uw from 1.3 W/m²K for Cor Vision Sliding and from 0.9 W/m²K for Cor Vision Plus, so both meet the Approved Document L 1.4 W/m²K maximum for replacement windows and doors. Cor Vision Plus has the thermal edge because its 36-56mm glazing capacity takes triple glazing (Cor Vision Sliding is double glazed only). Specific Uw is calculated per opening based on the chosen glazing unit, frame size and thermal spec at quote stage.

For projects targeting Passivhaus-grade thermal performance, neither Cor Vision is the spec. Schuco's ASE 80 reaches Passivhaus on the standard slider category and the Schuco ASS 77 PD Panorama lift-and-slide reaches whole-window Uw under 0.8 W/m²K. See our Cortizo vs Schuco comparison for the full thermal-spec ladder.

Security

Cor Vision Sliding can be specified to PAS 24:2022; Cor Vision Plus is not PAS 24 compatible. Hardware specification is shared:

• Multi-point shootbolt locking
• Anti-lift devices on the running track (prevents the leaf being lifted off the rails from outside)
• Internally beaded glazing
• Toughened safety glass throughout (mandatory in the critical locations Approved Document K defines)
• 3-star TS007 anti-snap, anti-drill, anti-bump cylinder

Secured by Design configurations are available on Cor Vision Sliding where insurance underwriters require it. This is the police-led UK security accreditation recognised by premium home insurers including Hiscox, Chubb and AIG Private Client.

Colour and Finish

Both Cor Vision systems offer the full RAL palette as a standard option. Powder-coat finish is applied at the factory, baked at high temperature, and carries Cortizo's standard finish warranty. Common specifications:

• Anthracite Grey (RAL 7016)
• Black (RAL 9005)
• White (RAL 9010)
• Bronze (RAL 8019)
• Dual-colour (different RAL inside vs outside, common on contemporary builds)

Custom RAL is available on both systems at no premium.

When to Choose Cor Vision Sliding

The standard Cor Vision is the right specification for:

• Most residential extensions where the contemporary aesthetic is welcome but not the leading priority
• Leaves up to 2.5m wide × 3m high and 320kg
• Double-glazed specifications (26-30mm glazing)
• Projects targeting the slimmest central junction in our Cortizo range (20mm)
• Budget-conscious projects where the spec premium for Plus is hard to justify
• Replacement projects where matching existing aluminium frame depths matters

When to Choose Cor Vision Plus Sliding

The Plus tier is the right specification for:

• Very large apertures: anywhere a single leaf needs to be wider than 2.5m or taller than 3m (up to 4m × 4m)
• Sashes heavier than 320kg: up to 400kg manual or 700kg motorised (triple glazing or thick acoustic-laminated combinations)
• Glazing thicker than 30mm, including triple glazing (36-56mm units)
• Contemporary new builds where the closed-door appearance is part of the architectural language
• Projects targeting the better thermal figure (Uw from 0.9 W/m²K) and the most glass (up to 94%)
• Corner openings without a mullion (90° corner) or pocket installations where the sashes slide into the wall

Pricing

Vitrum Solutions is a quote-driven business. We do not publish fixed price tables on Cortizo sliding doors because the cost varies with sash size, panel count, glazing specification, RAL colour, threshold detail and any structural alterations to the existing aperture. The Cor Vision Plus typically carries a modest premium over the standard Cor Vision for the larger sash capacity, triple-glazing capability and better thermal performance.

For real 2026 UK installed pricing context see Cortizo Cor Vision Sliding Doors Cost UK. Final price is set after a free no-obligation survey at your property.

Vitrum Solutions and Cortizo

Vitrum Solutions is a Cortizo manufacturer, fabricator and installer covering Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London. We carry both sliding tiers because the right answer genuinely depends on the aperture, the elevation and the rest of the glazing schedule. Our survey team specifies the correct system at survey rather than defaulting to the higher-margin tier.

Browse the Cortizo brand hub for the full product portfolio (bifolds, sliding, lift-and-slide, casements, Millennium Plus front doors).

Frequently Asked Questions

Cor Vision vs Cor Vision Plus — which sliding system is right for my project?

Use the aperture as the deciding test. If your single leaf is 2.5m wide × 3m high or smaller, weighs 320kg or less and the glazing schedule is double-glazed, Cor Vision Sliding is the right specification. Its 20mm central junction is the slimmest in our Cortizo range and the spec premium for Plus is hard to justify at that scale. Move to Cor Vision Plus when any one of three project conditions is met: a single leaf needs to exceed 2.5m wide or 3m tall (Plus goes to 4m × 4m), the glazing schedule includes triple-glazed or acoustic-laminated combinations needing the 36-56mm capacity, or the brief calls for motorised operation, a 90° corner without a mullion or a pocket installation. Architect-led contemporary new builds usually land on Plus; rear-extension residential refurbishments usually land on standard.

Why isn't Cor Vision a lift-and-slide system?

Cor Vision and Cor Vision Plus are standard sliders by design. The leaf rolls along a precision track, the handle operates the lock, and there is no lift mechanism. Cortizo splits these from the lift-and-slide range deliberately because the use cases differ: standard sliders cover most residential apertures cleanly without the handle-lift action (Cor Vision Plus takes up to 400kg per panel manually and 700kg motorised), while lift-and-slide is the spec when the closed-state air-tightness needs to seat a heavy leaf onto its seal. For projects that need lift-and-slide function, we fit the lift-and-slide version of the Cortizo 4700 Sliding Patio; see the Cortizo Lift-and-Slide hub.

Can I have triple glazing on a Cor Vision slider?

Cor Vision Plus accepts glazing from 36mm to 56mm thick, which is enough capacity for triple-glazed Low-E units and for thick acoustic-laminated combinations. Cor Vision Sliding takes 26-30mm units and is double glazed only. If your project specifies triple glazing on the slider, Cor Vision Plus is the system.

What security upgrades are available on Cor Vision Plus?

The standard Cor Vision Plus specification includes multi-point shootbolt locking, anti-lift devices on the running track, internally beaded glazing, toughened safety glass, and a 3-star TS007 anti-snap, anti-drill, anti-bump cylinder. Cor Vision Plus is not PAS 24 compatible, so where an insurance underwriter or new-build specification requires PAS 24, the standard Cor Vision Sliding, which can be specified to PAS 24:2022, is the Cortizo alternative. For projects targeting BS EN 1627 RC2 burglar resistance the right alternative is the Schuco ASS 77 PD Panorama lift-and-slide. Cor Vision Plus is not BS EN 1627 tested. See our accreditations page for Secured by Design certification details.

How does Cor Vision Plus compare to Schuco's premium sliding tier?

The honest head-to-head pairs Cortizo's premium standard slider against Schuco's premium lift-and-slide tier. Cor Vision Plus offers the slimmer central junction (25mm vs Schuco ASS 77 PD's 30mm) and offers a larger maximum sash (4m × 4m at 400kg manual or 700kg motorised vs 3200×3000mm at 500kg). Schuco wins on thermal: ASS 77 PD reaches whole-window Uw under 0.8 W/m²K (Passivhaus-grade) where Cor Vision Plus starts from Uw 0.9 W/m²K, and Schuco's ASE 80 standard slider also reaches Passivhaus thermal where Cor Vision does not. Schuco also wins on the lift-and-slide mechanism, relevant where 500kg-sash daily operation matters. Where insurance requires DIN EN 1627 RC2 certification specifically, ASS 77 PD is the Schuco-side answer (Cor Vision Plus is not BS EN 1627 tested, as noted above). The Cortizo Cor Vision Plus answer is the slimmer closed-door appearance and the larger sash, with Uw from 0.9 W/m²K; the Schuco ASS 77 PD answer is Passivhaus thermal plus lift-and-slide engineering at a slightly heavier central junction. See Cortizo vs Schuco.

What is the maximum aperture you can fit a Cor Vision slider into?

Maximum aperture depends on panel count and configuration (2-panel, 3-panel, 4-panel, with one or more fixed leaves). Cor Vision Plus's 4m × 4m max-sash limit means a 4-panel configuration can span apertures over 12m wide. The exact dimensions for your opening are confirmed at the survey stage.

Where is Cor Vision manufactured and what's the UK lead time?

Cortizo produces the Cor Vision and Cor Vision Plus profile at its facilities in northwestern Spain, and Vitrum Solutions fabricates the finished sliders in our own Uxbridge workshop. Each door is made to order (there is no off-the-shelf stock), so the lead time runs from the date the order is placed. In 2026 the typical lead time on a residential Cor Vision order is several weeks from order placement to delivery on site, with the exact figure confirmed at quote stage based on current Cortizo profile availability and any specific spec items (custom RAL, triple glazing, motorised hardware) that affect the production schedule.

Getting a Quote

Vitrum Solutions installs both Cortizo Cor Vision Sliding and Cor Vision Plus Sliding across Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London. Request a free quote and we will provide a written itemised price for both systems so you can compare directly.

For more on Cortizo specifically see Cortizo Sliding Doors Review and Cortizo Aluminium Windows Review. For the full Cortizo bifold-vs-bifold-plus comparison see Cortizo Bi-Fold vs Bi-fold Plus Door.