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COR 70 OC Semi-visible - aluminium and PVC windows Cortizo
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COR 70 OC Semi-visible

The semi-visible sash version of the COR 70 OC system expands the aesthetic possibilities of this monoblock-frame series, available in butt-joint or mitred cut.

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Features

Semi-visible sash system with monoblock frame | Cortizo aluminium and PVC windows for homes

COR 70 OC Semi-visible keeps the installation advantages of the monoblock frame and adds a semi-visible sash aesthetic, allowing the appearance of the opening to be adapted to projects with greater visual requirements.

Thermal transmittanceUw ≥ 0.9 W/m²K
Acoustic insulationRw up to 44 dB
Air permeabilityClass 4
Water tightnessClass E1800
Wind resistanceClass C5
AEV reference test 1.23 x 1.48 m / 2 sashes. DTA certification by CSTB laboratory.
System technical information

System technical information

Main data

SectionsFrame 70 - 232 mm · Sash 70 mm
Polyamide strip length32 - 35 mm
Profile thicknessWindow 1.5 mm
GlazingMax. 55 mm · Min. 15 mm
Max. sash dimensionsWidth 1000 mm · Height 1700 mm
Max. sash weight160 kg
NoteCheck maximum weight and dimensions according to typology

Options

Security hardware - aluminium and PVC windows CortizoSecurity hardware
Concealed hardware - aluminium and PVC windows CortizoConcealed hardware
Concealed handle - aluminium and PVC windows CortizoConcealed handle
Concealed drainage - aluminium and PVC windows CortizoConcealed drainage

Opening options

COR 70 OC Semi-visible opening options - aluminium and PVC windows Cortizo
Inward opening: side-hung, tilt & turn, bottom-hung and parallel sliding.
System gallery

System gallery

Images prepared to show the semi-visible aesthetic, the monoblock frame, the system sections and its integration into residential projects.

COR 70 OC Semi-visible on facade - aluminium and PVC windows Cortizo
COR 70 OC Semi-visible detail - aluminium and PVC windows Cortizo COR 70 OC Semi-visible technical section - aluminium and PVC windows Cortizo

Would you like to assess COR 70 OC Semi-visible for your home?

Request a quote and we will help you analyse whether this system meets your needs for installation, design, insulation and comfort.

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Aluminium and PVC windows: useful guidance for choosing well

Choosing aluminium and PVC windows is not only a matter of price. In every home, orientation, climate, outside noise, opening size, façade design and daily use all influence the final decision. Cortizo Windows brings together solutions designed to improve thermal insulation, acoustic insulation, security, natural light and energy efficiency while preserving the character of each project.

Aluminium stands out for its strength, durability, dimensional stability and design possibilities, especially when large openings, slim profiles or highly customised finishes are required. PVC offers excellent insulating performance, low maintenance and a strong balance between comfort and value for home renovation. In both cases, the right choice should take into account the glazing, opening type, installation quality, orientation and the real needs of the household.

Beyond comparing materials, it is useful to define what needs to be improved: reducing energy loss, gaining more silence, increasing security, simplifying maintenance, renewing the appearance of the home or preparing it for more efficient consumption. The Cortizo Windows retail network helps assess each project, identify the most suitable solution and request a professional quotation for replacing windows with a close, project-focused service, without spam or unrelated calls.