Cortizo Heritage Collection
Discover the perfect blend of classic aesthetics and modern performance with Cortizo's Alu-Steel systems, offering unparalleled design versatility.
Cortizo Heritage Collection Features
Start with the published benefits that most affect performance, appearance and day-to-day use.
Alu-Steel System Features
Inspired by classic designs, the Alu-Steel system combines aluminium performance with a steel-like appearance, perfect for both new buildings and refurbishments. Available in classic or modern styles.
Thermally Broken
Ensure optimum energy efficiency and performance with our thermally broken aluminium systems.
Classic & Modern Designs
Choose from classic or modern styles to suit the aesthetic needs of your project.
Varied Opening Options
Inward opening, side hung, tilt & turn, tilt-only styles available.
Alu-Steel System Overview
The new Alu-Steel system is designed with European grooves and offers thermally broken profiles, providing excellent thermal performance.
- Concealed hinges
- Concealed handle (Modern version)
- Profile thickness: 1.5mm
- Polyamide strip length: 32-39mm
Technical Specifications
- Air permeability: Class 4
- Water tightness: Class E1200
- Wind resistance: Class C5
Project Workflow
From initial concept to final installation.
Design
Select your desired style - classic or modern, and customize the glazing options.
Installation
Expert setup ensures maximum performance and aesthetic appeal.
Product Specifications
Move between the practical benefits, verified performance data, product videos and downloadable technical literature.
What this system is designed to do
Use these practical characteristics to judge whether the product suits the opening, architecture and way the space will be used.
| Opening Possibilities | Inward Opening, Side Hung, Tilt & Turn, Tilt Only |
Compare the measurable specification
Review the available thermal, weather, acoustic, security and dimensional evidence before confirming the project-specific configuration.
| Sightline | 72.5mm |
| Frame Thickness | Window 1.5 mm |
| Maximum Glazing | 54 mm |
| Minimum Glazing | 20 mm |
| Maximum Sash Width | 1500 mm |
| Maximum Sash Height | 2600 mm |
| Thermal Transmittance | Uw ≥ 0.83 W/m²K |
| Air Permeability | Class 4 |
| Water Tightness | Class E1200 |
| Wind Resistance | Class C5 |
Gallery
Browse installations, product details, and finish inspiration from recent projects.
Need a Material Sample?
Compare colours, textures and finishes in the property before the final specification is agreed.
Frequently Asked Questions
Clear answers to the practical questions that often shape the final specification.
Ready to turn this product into a measured specification?
Share the property, priorities and rough opening sizes. We will check product fit, glazing, finish and installation detail before anything is ordered.
Products viewed on this device
- 01
Share the property and priorities
Send photographs, plans or rough sizes and tell us what the new opening needs to achieve.
- 02
Confirm the specification
We check system fit, glass, thresholds, hardware, finish and access, then confirm dimensions through survey.
- 03
Approve, manufacture and install
A clear quotation records the agreed scope before manufacture, installation and aftercare are coordinated.
Explore, compare and plan this product.
Review the key evidence, test a typical opening and save the system to your shortlist. Everything here is based on the information published for this product.
What stands out on this system
- More natural lightGlazing, sightline or large-opening details support brighter spaces.
- Thermal comfortPublished content includes thermal, insulation or draught-control benefits.
- Character & heritageThe design language suits traditional, period or heritage-led projects.
Size the rough opening
Enter one typical opening. This creates a planning brief, not a manufacturing size.
What matters most to the project?
Choose up to three. We will compare them with the benefits published on this page.
The result uses only benefits and specifications published on this page.
Build a better-informed shortlist.
Four practical routes for checking the product, project and budget before survey.