Aluminium windows and doors, explained clearly — with Schüco at the centre
A local editorial reference on the systems that keep coming up on UK sites: Schüco, Cortizo, Kobbe, Kubu, VELFAC and Rationel. Written for homeowners in Stevenage, Welwyn Garden City, Hertford and the wider Hertfordshire area — without the marketing gloss.
Brands we cover
Each brand has its own hub with practical write-ups of the systems specified most often on UK projects.
Schüco
German engineering that sets the benchmark for the wider aluminium industry.
8 articlesCortizo
Spanish manufacturer with one of the largest extrusion operations in Europe.
3 articlesKobbe
Bespoke aluminium entrance doors, engineered to individual specification.
3 articlesKubu
Smart lock sensors built into the multi-point locks of aluminium doors and windows.
3 articlesVELFAC
Danish composite windows and doors — aluminium outside, timber inside.
3 articlesRationel
Scandinavian precision in composite timber-aluminium windows and doors.
3 articlesLatest articles
Recent product write-ups and practical guides.
Rationel entrance doors: quiet Scandinavian detailing at the threshold
Rationel's composite entrance doors combine timber and aluminium in a restrained Scandinavian idiom.
Read → RationelRationel façade glazing: composite systems scaled up to the elevation
Rationel's façade solutions extend the composite window construction to full-elevation glazing on architect-led homes.
Read → RationelRationel Aluclad: composite windows with strong thermal figures
Rationel Aluclad is a Danish composite window system with a particularly strong thermal specification.
Read → VELFACVELFAC composite doors: matching the windows through the whole elevation
VELFAC's composite doors carry the aluminium-and-timber construction of the window range through to the entrance.
Read → VELFACVELFAC 400: slim sightlines for architect-led minimalism
VELFAC 400 pushes the composite window towards minimalist architecture with markedly narrower sightlines.
Read → VELFACVELFAC 200: Danish composite windows, aluminium outside and timber inside
The VELFAC 200 composite window system — construction, thermal specification and typical UK applications.
Read →Local supplier: 5EC, based in Stevenage
5EC is registered in Stevenage and has served the Hertfordshire market for many years, with regular installations across Welwyn Garden City, Hertford, Buntingford and Letchworth Garden City. The company holds authorised-supplier status for every brand covered in this journal — from Schüco to Rationel.
For readers new to the range, the Hertfordshire bifold showroom is a straightforward first visit before commissioning any work.
About this journal
The Schuco Doors Stevenage Team writes independently of manufacturers and suppliers. The aim is plain-English, technically grounded coverage of aluminium windows and doors for homeowners planning a replacement or an extension in Hertfordshire. More about the team on the about page.