Renovated living and dining room in Nice with tall gold-framed French windows
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Case study · Residential renovation

Carré d’Or apartment,framed in gold.

Tilt-and-turn French windows in Cortizo COR 70 Industrial with Aluprof electric roller shutters, for the renovation of an apartment in Nice’s Carré d’Or - light grey outside, Bright Gold anodised inside.

Completed · May 2026

01 - The project

Discreet outside,golden within.

In Nice’s Carré d’Or, the apartment’s tall French windows open onto wrought-iron balconies and some of the city’s most ornate façades. The renovation called for windows that respect the building from the street and bring warmth to the rooms inside.

GLL Materials supplied tilt-and-turn French windows in Cortizo COR 70 Industrial, finished in RAL 7035 light grey outside and Bright Gold anodised inside, together with Aluprof electric roller shutters and boxes.

Project sheet
TypologyResidential
ContextRenovation
SolutionsTilt-and-turn French windows, electric roller shutters
SystemsCortizo COR 70 Industrial · Aluprof
FinishRAL 7035 outside · Bright Gold inside
LocationNice · Carré d’Or
CompletedMay 2026
Living room with gold anodised tilt-and-turn French windows overlooking ornate façades in Nice
Living roomCortizo COR 70 Industrial

02 - The specification

Two finishes,one window.

Each window is bicolour: RAL 7035 light grey on the exterior and a Bright Gold 2B anodised finish on the interior. Anodising is part of the aluminium surface itself rather than a coating on top, so the metallic tone stays deep and even over time.

The details were set with the same care: a low threshold onto the balconies, handles at 1,100 mm and 22 mm interior cover trims for a clean junction with the walls.

As specified

ProfilesCortizo COR 70
HardwareSTAC
ExteriorRAL 7035
InteriorAnodised Bright Gold 2B
Glazing24 mm double glazing, float + low-E
ThresholdLow threshold
Handle height1,100 mm
Cover trims22 mm, interior
ShuttersAluprof electric roller shutters with boxes
Open French window with a gold anodised interior frame and a low threshold onto a wrought-iron balcony
Bright Gold anodised interior · low threshold

03 - The system

COR 70 Industrial,by Cortizo.

A 70 mm hinged system that combines excellent thermal and acoustic performance with simple fabrication - one of Cortizo’s most specified series for aluminium windows and balcony doors. It is available with a visible sash, or a semi-visible sash for a larger glazed area.

Frame · Sash70 mm · 78 mm
ThermalUw from 0.76 W/m²K
AcousticRw up to 44 dB
Air · Water · WindClass 4 · E1800 · C5
SecurityUp to RC2
Max. sash size1,500 × 2,600 mm
Max. sash weight160 kg
OpeningsTilt & turn, side-hung, parallel sliding, bottom-hung
Cutaway of the Cortizo COR 70 Industrial window system
COR 70 Industrial · cutaway
COR 70 Industrial with visible and semi-visible sash
Visible and semi-visible sash
Technical sections of the COR 70 Industrial frame and sash
Sections · 70 mm frame

System images: Cortizo

04 - Gallery

Light overthe Carré d’Or.

Tall gold-framed tilt-and-turn French window in a living room overlooking Nice
Tilt-and-turn French window
Pair of gold-framed French windows opening onto a wrought-iron balcony
French windows onto the balcony
Bedroom with gold-framed French window onto a wrought-iron balcony
Bedroom
Bedroom with walnut joinery and gold-framed French window
Bedroom

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