Compare Smart, Cortizo, and Korniche sliding patio doors. Discover which aluminium system offers the best style, performance, and value for your home.
What You’ll Learn:
- How Smart, Cortizo, and Korniche sliding patio doors compare
- Which system delivers the best performance and value
- Essential factors to consider before buying
- Why buying direct from GFD Homes makes a difference
(Estimated Reading Time: 5-6 Minutes)
The Sliding Patio Door Showdown — Smart, Cortizo, or Korniche?
Planning a renovation or upgrading your patio doors? You’ve likely discovered there’s a lot more to choosing a sliding patio door than meets the eye. Every brand promises slimmer frames, smoother tracks, and better insulation — but which claims actually hold up?
This guide breaks it all down clearly.
We’ll compare the Smart, Cortizo, and Korniche aluminium sliding patio doors side by side, using real product data and live prices from GFD Homes.
By the end, you’ll know exactly which sliding patio door best suits your budget, space, and style — no jargon, no confusion, just clarity.
Sliding Patio Doors Comparison Matrix
| Brand | From Price | Interlock Width | U-Value | Mechanism | Max Panel Size | Colours | Security | Warranty | Standout Feature |
| Smart Visoglide | £1,967 | 83 mm | 1.4 W/m²K | Lift-and-Slide | 2.5m x 2.7m | 200+ RAL | PAS 24 | 10 Years | Trusted UK system with smooth glide and strong seals |
| Cortizo 4700 | £3,250 | 47 mm | 1.3 W/m²K | Lift-and-Slide | 3m x 3m | 100+ RAL | PAS 24 | 10 Years | Ultra-slim European design with minimal interlocks |
| Korniche | £1,850 | 65 mm | 1.5 W/m²K | Inline Slide | 2.4m x 2.5m | 17 + dual colour | PAS 24 | 10 Years | Affordable luxury with matching roof & bifold styling |
Example Models and Live Prices
| Brand | Example Product | Live Price | View Product |
| Smart | Visoglide 2 Pane Sliding Patio Door | £1,967 | View Smart Sliding Doors › |
| Cortizo | Slimline 2 Pane Sliding Door | £3,250 | View Cortizo Sliding Doors › |
| Korniche | Aluminium Sliding System | £1,850 | View Korniche Sliding Range › |
The Best For Sliding Patio Doors Comparison
Best for Slim Sightlines:
Cortizo – With interlocks as thin as 47 mm, it’s the minimalist’s dream. Maximum light, minimal frame. Perfect for modern extensions and statement glazing walls.
Best for Budget:
Korniche – Starting at £1,850 inc VAT, it delivers superb performance for the price. Ideal for homeowners who want premium looks without premium pricing.
Best for Strength and Size:
Cortizo – With panels up to 3m high, Cortizo suits grand openings and architectural builds where glass walls dominate.
Best for Colour Range:
Smart – Over 200 RAL finishes, including dual colour, textured, and metallic tones. Easy to match with windows and bifolds.
Best for Smooth Operation:
Smart Visoglide – Its lift-and-slide system glides effortlessly, even on large panes — a favourite among installers.
Best for Thermal Performance:
Cortizo – With a 1.3 W/m²K U-value, Cortizo leads the way in insulation and energy efficiency.
Best for Cohesive Styling:
Korniche – Pairs perfectly with Korniche bifolds and roof lanterns for a seamless aesthetic across your home.
Best Overall:
Cortizo – If you want luxury looks, performance, and longevity in one system, Cortizo edges ahead as the all-round winner.
Key Buying Considerations
- Opening Size
Measure your aperture carefully. Smart and Cortizo handle large openings; Korniche suits mid-size installations.
- Access & Usage
Daily use? Go for lift-and-slide (Smart/Cortizo).
Occasional or lighter use? Inline systems (Korniche) work beautifully.
- Exposure & Location
If your property faces heavy wind or rain, choose deeper tracks and reinforced seals — Smart and Cortizo excel here.
- Budget
Korniche gives unbeatable value, Smart is the safe all-rounder, and Cortizo delivers high-end style.
- Style Matching
Want consistent sightlines across your home? Match Smart or Korniche bifolds and windows for a unified finish.
Why Buy Direct from GFD Homes
When you place the order, your warranty and support belong to you — not your builder.
If the contractor buys on your behalf, the guarantee is tied to them, meaning you rely on them for any future claims or service.
Buying direct gives you:
- The warranty in your name
- Priority aftercare
- Transparent, accurate online pricing
- UK-wide delivery
No salesmen. No hidden extras. Just expert help when you need it.
Instant, Accurate Online Pricing
All our sliding systems are priced to the millimetre — so you’ll see an exact quote before you buy.
Start here:
Every order is made to measure, factory-finished, and delivered with full documentation.
Summary: Simplifying the Slide
You now know:
- The difference between lift-and-slide and inline systems.
- Why interlock width and thermal breaks matter.
- Which brands excel for budget, colour choice, and design.
If you’re looking for a trusted, expert supplier with transparent pricing and guidance that makes sense, GFD Homes is your best first — and last — stop.
Compare, design, and order your doors online now
🛒 Browse the full collection at www.gfdhomes.co.uk
📞 Or call 01642 309576 for expert guidance and a no-pressure quote.
In a rush? Why not contact us via Whatsapp
Browse Our Articles
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- Trade Sliding Patio Doors: looking for trade prices? Visit our trade site, The Trade Village
FAQ’s
1. Which brand makes the best sliding patio door?
Cortizo often leads for slim sightlines and performance, while Korniche wins on price and Smart offers the widest colour choice.
2. Are sliding patio doors energy efficient?
Yes — all three brands feature thermally broken aluminium frames and high-performance glazing for excellent insulation.
3. How much does a sliding patio door cost?
Prices start around £1,950 for Korniche, with Cortizo and Smart models varying by size, finish, and glass options.
4. Are sliding patio doors secure?
Absolutely. Modern aluminium systems include multi-point locking, toughened glass, and reinforced frames for strong home security.
5. Can I get matching windows and bifolds?
Yes — Smart and Korniche offer complete ranges so you can match your sliding patio doors with your windows and bifold systems.
