Cortizo C 70 is proof that sliding windows can be warm. Unlike older aluminium sliders, this system is made from high-quality PVC with a 70 mm installation depth, compatible with main window systems. It is the ideal choice for those who want to save usable space on a balcony or terrace without sacrificing home comfort and indoor temperature.
The profile design has been developed specifically for the Spanish climate: it is resistant to intense sunlight, salty sea air, and requires no painting. Thanks to the multi-chamber construction of the frame and sash, the C 70 effectively reduces street noise and keeps cool air inside during summer. Smooth operation is ensured by reliable rollers and steel guides (reinforcement) hidden inside the profile. This is a practical, durable, and aesthetically pleasing solution for modern apartments.
Technical Specifications
Warm PVC sliding system. The ideal solution for glazing balconies and loggias, combining space savings with the high thermal insulation of a 70 mm deep plastic profile.
System structural parameters:
Glazing options:
Maximum dimensions and mechanics:
Certified characteristics:
Warm PVC sliding system. The ideal solution for glazing balconies and loggias, combining space savings with the high thermal insulation of a 70 mm deep plastic profile.
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
C 70 is a sliding system (sashes move left-right), while A 70 is a casement system (opens on hinges). C 70 is more convenient in limited spaces, but A 70 provides slightly better sealing and sound insulation due to rubber compression.
No, Cortizo uses a high-quality PVC compound with titanium dioxide additives, specially developed for countries with high solar activity. The profile retains its whiteness and glossy surface for decades.
The maximum glazing unit thickness is 28 mm. This allows installation of a standard double glazed unit (two 4 or 6 mm panes) with low-E coating and argon filling, which is quite sufficient for a warm balcony.
The system is equipped with latch locks (crescent locks) that securely fix the sash. Thanks to the robust steel reinforcement inside the profile, forcing the sash open is quite difficult, although in terms of burglar resistance class it is inferior to casement windows with mushroom cams.
Maintenance is simple as PVC is easily cleaned with soapy water. The main advantage is the ability to remove the sashes (with some skill or professional assistance) for safe cleaning of exterior glass, which is especially important on upper floors.
Yes, this is a common application. However, keep in mind that the system has a small threshold (frame) that needs to be stepped over. For doors with high foot traffic, it is better to consider dedicated door systems or lift-and-slide configurations.
