Cortizo Bi-Fold is the only solution that frees up to 95% of the aperture width. Where sliding windows always leave part of the opening shielded by glass, the Bi-Fold folds its panels perpendicular to the frame, doing away entirely with the barrier between your home and the outdoors. It is the ideal choice for summer verandas, pool exits or restaurants where an instant switch from an enclosed heated room to an open terrace is essential.
For all the intricacy of its mechanism, this is a full thermally insulated system with a 73 mm profile depth and a thermal break, fit for year-round living. Cortizo's engineers kept the bi-fold airtight: multi-contour weatherseals guard against draughts and heavy rain just as well as standard windows do. The system can build impressive assemblies of up to 14 panels (7 per side), spanning openings more than 15 metres wide.
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 bi-fold door system that throws the space wide open. The whole glass wall concertinas into a slim stack to one side, so living room and terrace flow together as a single, partition-free area.
Structural specifications:
Glazing choices:
Largest sizes and mechanics:
Tested performance:
A bi-fold door system that throws the space wide open. The whole glass wall concertinas into a slim stack to one side, so living room and terrace flow together as a single, partition-free area.
For a 2-panel sliding system (3000 × 2200 mm) with basic double-glazed unit.
Alternative solutions from other manufacturers
Side by side
How Cortizo Bi-Fold stacks up against the closest matches from other brands.
| Specification | Cortizo Bi-FoldThis profile | Schüco ASE 60 | Rehau Synego Slide | Kömmerling PremiSlide 76 |
|---|---|---|---|---|
| Brand | Cortizo | Schüco | REHAU | Kömmerling |
| Material | Aluminium | Aluminium | PVC | PVC |
| Profile depth | — | — | 80mm | 76 mm (frame 158 mm) |
| Chambers | — | — | 7 chambers | — |
| Glass unit, max | up to 45 mm | up to 40mm | up to 51mm | up to 50 mm |
| Thermal (Uw) | ≤ 1.1 | 1,1 | 1.0 | ≤ 0.95 |
| Sound (Rw, dB) | ≈ 45 dB | ≈ 41 dB | — | ≈ 45 Rw(dB) |
See all sliding profiles compared.
Open full comparisonLeave a Review
Find out what people are saying about it
No reviews yet. Be the first!
PVC and aluminium are the two frames you will be quoted for almost every window in Spain, and the right answer changes from Valencia to Vigo. This guide compares them head-to-head on insulation, price per m², coastal durability, sizes, colours and noise, then gives a clear verdict by scenario and region.
Aluminium is Spain's home-team window material — and the customs data shows why. Spain net-exports roughly $1.2 billion of aluminium extrusions and finished windows a year, shipping to France, the UK and Latin America, led by Galician giants like Cortizo. A full data report on the aluminium value chain, who makes it, the thermal-break problem, and where PVC is eating in.
Corredera, lift-and-slide, folding or minimalist — Spain's terrace doors come in very different forms, and the wrong choice means draughts, trip hazards or a door you can barely move. This guide walks through the types, thermal performance, thresholds, security and realistic 2026 prices so you can compare quotes with confidence.
Floor-to-ceiling glass and near-frameless sliding walls turn Spanish living rooms into light-filled spaces with uninterrupted views. But large-format glazing brings real questions about solar heat, structure, security and cost. Here's how panoramic systems work and how to specify them well in Spain's climate.
Frameless glass curtains, framed enclosures, sliding and folding glass, thermal vs non-thermal systems — this guide explains how to close a terrace in Spain, what it costs per m², and the community-of-owners rules that catch buyers out. Compare verified enclosure specialists on Estimia.
Triple glazing is the default in the Alps and Scandinavia, but in Spain it only pays off in the right climate. This guide explains what triple glazing actually does, where in Spain it makes sense (the cold interior and mountains), where it is a waste of money, and exactly what to specify — so you can compare like-for-like quotes from verified companies on Estimia.
FAQs
This folding system runs 3 to 14 panels, with each leaf up to 1200 mm wide and 3000 mm tall. The frame and sash share a 73 mm build depth on aluminium alloy 6063 T5, and panels fold either inward or outward to stack to one side.
Each panel handles a mass of up to 120 kg, glided and folded by heavy-duty rollers and hinges. That headroom lets you specify thick, super-insulating units, but it is a fixed ceiling per leaf, so oversized triple-glazed panels must stay within the 1200 x 3000 mm and 120 kg envelope.
It accepts units up to 45 mm thick, including triple-glazed and safety tempered glass. Paired with the RPT polyamide thermal break (up to 30 mm), the deepest super-insulating unit pushes the system to a Uw of 1.1 W/(m²·K) and an A+ energy rating.
Tested performance is strong for a folding wall: watertightness Class 9A, air tightness Class 4, wind load Class A3, and acoustic damping up to 45 dB. The seal still relies on many panel junctions, so a single-leaf lift-and-slide such as the E 170 (≤ 0.9 W/(m²·K)) remains tighter where one large opening is the priority.
Step-free access is optional, not standard. You can specify the bottom frame to be sunk into the floor for a flush, level threshold. If that recess is not built in at construction, the sill stays raised, so flag accessibility needs before the floor is finished.
The Bi-Fold concertinas the whole glass wall into a slim stack, opening the full width rather than a single sliding gap. It out-insulates the sliders, at Uw 1.1 versus COR 4200 (≤ 1.6), COR Vision (≤ 1.3) and 4900 Corredera (≤ 1.3), and takes thicker glass (45 mm vs 26 / 30 / 36 mm). Sliders keep a flatter sightline and a single moving leaf.
