Cortizo — aluminium windows and doors
Cortizo produces aluminium systems at a scale few competitors can match, which shows up in reliable lead times and a broad choice of RAL finishes even on non-standard projects. It is the brand most often compared with Schüco on thermal figures, though its approach to profile detail and sightline geometry is distinctly its own.
Product information is published directly by the manufacturer at Cortizo's official site. In Stevenage and across Hertfordshire, 5EC holds authorised-supplier status for Cortizo.
Articles on Cortizo systems
Practical write-ups of the products specified most often in the UK.
Cortizo Cor Vision: ultra-slim sightlines as an alternative to Schüco sliders
Cortizo Cor Vision explained — an ultra-narrow-frame sliding door that competes directly with premium schuco sliding doors.
Read the article → 19 October 2025Cortizo Cor 60: an all-round window system at a competitive price point
A working reference on the Cortizo Cor 60 window system as an alternative to entry-level schuco doors and windows.
Read the article → 10 November 2025Cortizo Millennium 70: quietly minimalist aluminium entrance doors
The Cortizo Millennium 70 entrance door — specification, look and its position relative to Schüco's ADS range.
Read the article →Other brands in the journal
Continue with the ranges we cover alongside Cortizo.
Schüco
German engineering that sets the benchmark for the wider aluminium industry.
Kobbe
Bespoke aluminium entrance doors, engineered to individual specification.
Kubu
Smart lock sensors built into the multi-point locks of aluminium doors and windows.
VELFAC
Danish composite windows and doors — aluminium outside, timber inside.
Rationel
Scandinavian precision in composite timber-aluminium windows and doors.