Cortizo C 70 proves that sliding windows can be warm. Unlike older aluminium sliders, this system is built from high-grade PVC with a 70 mm installation depth and is compatible with the main window systems. It is the ideal pick for anyone wanting to reclaim usable space on a balcony or terrace without giving up indoor comfort and temperature.
The profile has been designed expressly for the Spanish climate: it stands up to intense sunlight and salty sea air and never needs painting. Thanks to the multi-chamber make-up of frame and sash, the C 70 cuts street noise effectively and keeps cool air inside through the summer. Dependable rollers and steel guides (reinforcement) concealed within the profile guarantee smooth operation. It is a practical, hard-wearing and good-looking solution for modern apartments.
Brand
Cortizo is the flagship of Spanish industry with headquarters in Galicia. The brand is famous for Cor Vision aluminum systems with virtually invisible profiles. If you need panoramic glazing for a villa or modern home — Cortizo is unrivaled.
More about CortizoTechnical Specifications
A warm PVC sliding system. With its 70 mm-deep plastic profile, it is the natural choice for enclosing balconies and loggias, saving floor space while still insulating well.
Structural specifications:
Glazing choices:
Largest sizes and mechanics:
Tested attributes:
A warm PVC sliding system. With its 70 mm-deep plastic profile, it is the natural choice for enclosing balconies and loggias, saving floor space while still insulating well.
For a 2-panel sliding system (3000 × 2200 mm) with basic double-glazed unit.
Alternative solutions from other manufacturers
Side by side
How Cortizo C 70 stacks up against the closest matches from other brands.
| Specification | Cortizo C 70This profile | Rehau Panorama Swing | Kömmerling PremiLine | WDS SL76 |
|---|---|---|---|---|
| Brand | Cortizo | REHAU | Kömmerling | WDS |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | — | — | 80 mm (frame) | 76 mm |
| Chambers | — | — | — | 5 chambers |
| Glass unit, max | up to 28 mm | up to 40mm | up to 28 mm | up to 48 mm |
| Thermal (Uw) | ≤ 1.3 | 1.3 | ≤ 1.3 | 1.3 |
| Sound (Rw, dB) | ≈ 34 dB | — | ≈ 34 Rw(dB) | ≈45 dB |
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FAQs
The C 70 runs a 70 mm frame with a 46 mm sash, both built as multi-chamber PVC bodies (typically 3-5 chambers) with galvanised steel reinforcement for static strength. It uses twin-circuit brush (felt) sealing with a moisture-proof insert, and certified figures read Uw up to 1.3 W/m2K, watertightness Class 7A, air tightness Class 4 and wind load Class C5.
The glazing pocket accepts units up to 28 mm thick, which fits a standard double-glazed unit of two panes with a low-E coating and argon fill. That depth is the physical ceiling of the 46 mm sash, so triple glazing is out: for thicker units you would step up to a deeper system. It is enough to reach the rated Uw of 1.3 W/m2K and roughly 34 dB of acoustic damping.
It is a balcony-and-loggia enclosure, not a heavy-duty system. Watch for:
As a PVC slider the C 70 matches the aluminium 4900 Corredera on thermals (Uw ≤ 1.3 each) and beats the COR 4200 (≤ 1.6 W/m2K), thanks to PVC's natural insulation. On acoustics the aluminium pair leads, at roughly 40 dB (4900) and 38 dB (COR 4200) versus the C 70's ~34 dB. The C 70 is also the cheaper entry, from 750 EUR against 1200 EUR-plus for those aluminium systems.
No. The C 70 uses an impact-resistant, calcium-zinc stabilised Greenline PVC compound that is UV resistant, so the profile holds its colour outdoors. Beyond plain white, it is offered in wood-effect lamination and coloured laminations including grey shades and anthracite.
Yes. The C 70 is offered with 2, 3 or 4 sashes on two tracks, so you can configure several sliding leaves across one opening. It is also fully compatible with the A 70 system's accessory profiles, such as extensions and connectors, letting you tie a sliding enclosure into matching casement windows with coordinated framing.
