A system for each design
The official UK range includes COR 70 and COR 80 Industrial systems, hidden-sash variants and steel-look options. Sightlines, frame depth and opening types differ across the range.
Aluminium windows suit contemporary architecture and projects where frame appearance is a priority. Choose an opening arrangement to suit the room and ventilation requirements. The available system, glazing, finish and overall sizes will determine the final specification.

Cortizo’s aluminium window range includes visible, semi-exposed and hidden-sash systems, with side-hung, tilt-and-turn, bottom-hung and other opening types available across selected systems.
Tell us the appearance, operation and practical priorities for your project. We will confirm which available system and configuration is appropriate before you order.
Manufacturer information: Cortizo window systems ↗


Images are illustrative of the product type. The exact style, colour and glazing are confirmed with your quotation.
The official UK range includes COR 70 and COR 80 Industrial systems, hidden-sash variants and steel-look options. Sightlines, frame depth and opening types differ across the range.
This 70mm system accommodates inward and outward opening types. Cortizo publishes thermal, acoustic and weather-test results for specific configurations rather than for aluminium windows as a whole.
Glazing, sash size, hardware and frame system must be considered together. We will match your drawings and priorities to an appropriate available Cortizo configuration.
Aluminium windows rely on a thermal break and the glass unit for their energy performance. Slimmer sightlines mean more glass, which makes the unit specification especially important.
Cortizo aluminium systems use polyamide thermal breaks between the inner and outer frame to reduce heat transfer through the metal. Frame depth and the break design vary between systems.
Cortizo publishes thermal, acoustic and weather-test results for specific system configurations rather than for aluminium as a whole. Deeper systems such as COR 80 are aimed at the lowest heat-loss figures.
Double or triple units, low-emissivity coatings, argon fill and warm-edge spacers usually make the largest difference. We will confirm the achievable figure for your chosen configuration.
Cortizo aluminium is powder coated to your chosen RAL reference, with matt, satin, textured and wood-effect finishes available across the range. Dual-colour frames allow a different internal and external finish.
Powder-coated finishes are specified by RAL reference. Availability, texture and any dual-colour option are confirmed with your quotation.
For accurate pricing, provide manufacturing sizes or drawings, quantity, preferred colour, glazing requirements, opening directions and your delivery postcode. Confirm all final sizes with your installer.
For projects more than 100 miles away, a minimum order of £1,500 applies. We confirm delivery arrangements with every quotation.