Aluminium
Aluminium Flush Casement Windows
Sleek, modern aluminium flush casement windows where the sash sits perfectly flush with the frame — delivering clean lines and superior performance. Ideal for contemporary builds and period renovations where planning restrictions demand a traditional flush appearance.
Features & Benefits
Flush Sash Design
Sash sits level with the frame for a sleek, flat finish
Slim Aluminium Profiles
Maximum glass area for more natural light
Any RAL Colour
Powder-coated in any colour from the full RAL Classic range
Friction Hinges
Easy cleaning access from inside your home
Multi-Point Locking
Secure espagnolette locking as standard
Conservation Friendly
Flat profiles closely match traditional timber windows
Our Installations
Technical Specifications
Frequently Asked Questions
What are aluminium flush casement windows?
Windows that sit perfectly flat within the frame when closed, creating a sleek appearance suitable for contemporary and heritage properties.
What's the difference between flush and standard casement?
Standard casement windows protrude from the frame when closed. Flush variants sit level with the frame for a smooth, flat finish while maintaining ventilation and security.
Are they suitable for conservation areas?
Yes — flat profiles closely match traditional timber windows. Many conservation officers accept aluminium flush casements as suitable replacements.
How energy efficient are they?
Cortizo systems use thermally broken profiles and argon-filled double or triple glazing achieving excellent U-values for energy efficiency.
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