Cortizo C 70 sliding PVC windows
A practical 70 mm sliding system for windows and balcony doors, with improved comfort and smooth operation.
Cortizo C 70: a practical sliding PVC system
A 70 mm frameand 46 mm sash with glazing capacity up to28 mm, for windows and balcony doors.
An option for replacing conventional aluminium sliding windows while retaining a familiar, space-saving opening. We compare the complete PVC assembly and glazing with the existing window.
An optional 30 mm central interlock reduces the visible profile between sashes and leaves more space for the view.
Spanish manufacturer · Cortizo
What C 70 offers
Space-saving opening
The sash moves along its track rather than opening into the room.
Reference weather performance
Air permeability Class 4, watertightness 7A and wind resistance Class C5 in the stated test.
Acoustic glazing options
Reference acoustic insulation up to 38 dB with the specified glass.
Slim central interlock
An optional 30 mm interlock reduces the visible profile between sashes.
Balcony-door configurations
Specified balcony-door sashes up to 1800 × 2600 mm and 200 kg.
Choose your colour
The finish helps your window fit your facade and your interior. Explore popular colours and combinations: white inside, colour outside, wood effects and matt textures.
Anthracite grey
Choose a sample to see the window in that finish.
On-screen colours are indicative. Visit our showroom in San Vicente del Raspeig to see the actual samples before choosing.
The specifications at a glance
AEV test (2 sash, 1230 × 1480 mm)
| Permeability to air | Class 4 |
| Water tightness | 7A |
| Wind resistance | Class C5 |
Insulation
| Thermal transmittance (Uw) | ≥ 1.3 W/m²K |
| Acoustic insulation | Rw up to 38 dB |
Sections
| Frame | 70 mm |
| Sash | 46 mm |
| Glazing | 4 to 28 mm |
Maximum sash
| Window | 1400 × 1800 mm · 70 kg |
| Balcony door | 1800 × 2600 mm · 200 kg |
Reference values according to Cortizo. Final performance depends on glass, hardware, dimensions and assembly. Non-contractual information.
Cortizo C 70 for replacing conventional sliding windows
Cortizo C 70is a70 mm sliding PVC system for renovations. It retains a familiar sliding opening while improving on the insulation of conventional aluminium windows.
Compare the complete assembly
- Reference thermal transmittance from Uw 1.3 W/m²K with the specified glazing.
- Reference acoustic insulation up to 38 dB.
- Wind resistance Class C5and watertightness7A in the stated test.
- Optional 30 mm central interlock for a slimmer visible profile.
Different limits for windows and balcony doors
The stated window configuration permits sashes up to 1400 × 1800 mmand70 kg. Balcony-door configurations permit sashes up to 1800 × 2600 mmand200 kg. The glazing, hardware and exact opening must remain within the relevant limits.
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Sliding openings for apartments and terraces
Cortizo C 70 can be considered for balconies, kitchens and utility balconies where an inward-opening sash would use too much space. Exposure, glazing and perimeter sealing are assessed alongside the reference weather values.
The optional 30 mm central interlock reduces the profile between sashes. You can compare it with the standard interlock and the proposed glazing in the quote.
Frequently asked questions
Can C 70 be coordinated with Cortizo hinged windows?
Yes. Compatible finishes and profile appearances can be coordinated across the sliding C range and hinged A range, with each assembly specified for its opening.
Which glazing can Cortizo C 70 use?
The system accepts glass from 4 to 28 mm. Suitable options include low-emissivity double glazing, such as an appropriate 4/16/4 configuration, or compatible acoustic glazing. We specify the glass for the opening and exposure.
What acoustic value does C 70 quote?
The manufacturer quotes reference acoustic insulation up to 38 dB with the specified glass. The final result depends on the complete window and installation.
What are C 70’s stated maximum sash sizes?
The stated window sash limit is 1400 × 1800 mm and 70 kg. The balcony-door sash limit is 1800 × 2600 mm and 200 kg, within the specified configurations.
Would you like a quote?
We measure, manufacture and install your made-to-measure windows in Alicante and the surrounding area. No-obligation visit and quote.