We make the system: the section, the die, the polyamide bar and the test that stands behind it. Your window is made and installed by one of the 240 approved fabricators working with our series.
Casement, sliding and curtain walling share the same bar, the same gasket and the same test regime. What changes is the depth of the profile and how much the hardware can move.
Windows, balcony doors and entrance doors
70 to 100 mm deep, with polyamide bars from 24 to 55 mm and optional insulating filler in the break cavity. This is the family where Uf drops furthest, because it is the only one with room to do it.
Wide openings without giving up class 4
Sliding at 100 and 130 mm, lift-and-slide at 160 mm. The lift-and-slide is the only unit in the catalogue that reaches air permeability class 4: the sash drops onto the gasket and compresses it right around, which a running sliding sash cannot do.
Stick system of mullions and transoms
Mullions from 125 to 205 mm, 50 or 60 mm sightline, capped or structurally glazed. Calculated per module, tested per module and installed off the slab with no perimeter scaffold.
Enter the real opening, not a theoretical square metre. The calculation is EN ISO 10077-1 and we show the three terms separately: glass, frame and the thermal bridge at the edge of the glazing. It is almost always the third one that surprises.
46 openings at 1,800 Kd/a · Glass Ug 1.10 W/m²K
A system is not released when the section looks right, but when the die holds tolerance, the bar survives the shear test and the rig gives it a class. About eighteen months separate the first from the last.
The section is drawn with the hardware, the glass and the drainage already decided. Every variant is simulated thermally before a die is ordered, because a die costs what it costs and cannot be adjusted afterwards.
An 1,800-tonne press on seven-inch billet. The profile leaves at twelve metres, is stretched, artificially aged to T6 and cut to order length.
The bars are inserted and rolled in under pressure between the two shells. Every batch is tested for longitudinal and transverse shear: if the joint gives, the profile stops being structural.
Powder coating under QUALICOAT and anodising under QUALANOD, both on site. Dual colour is solved by coating the two shells separately before rolling them together, not afterwards.
Every series is tested on our own rig with the assembly the fabricator actually builds, not a laboratory specimen. Sections come as DWG and as BIM objects, and we will run the Uw calculation for your schedule if it helps.
Openings are 15 to 25 % of the envelope and account for more than half the losses. That is why they are the first thing touched when demand has to come down on a fixed budget.
85 and 100 mm series with triple glazing where the climate zone demands it. What usually decides is not the series but how many small openings the design has.
Replacement with the building occupied, almost always worked from outside. This is where a window goes from Uw 5.7 to 1.3 and the bill changes in the first winter.
Curtain walling with solar control. Here the g-value matters as much as the transmittance: there is surplus heat eleven months a year and the facade has to filter it without going dark.
Robust hardware, simple cleaning, controlled ventilation. It gets opened and closed a hundred times a day for twenty years.
Acoustics before everything else. An Rw of 40 dB at the opening is worth more than any interior refurbishment if the room faces the street.
Uw below 1.0 with a 100 mm frame, triple glazing and a warm edge. And with the installation detail resolved, because at that level the installation thermal bridge outweighs the frame itself.
This industry circulates figures nobody has measured. We say where each one comes from: what has been calculated, what has been simulated and what has been tested on a rig.
Frame transmittance comes from a finite element model of the real section to EN ISO 10077-2. It is not deduced from the width of the polyamide bar, however obvious the correlation looks. From that Uf the configurator calculates the Uw of your opening to EN ISO 10077-1 and shows you the three terms so you can check them.
Air permeability, watertightness and wind resistance are tested to EN 1026, EN 1027 and EN 12211 on an opening assembled the way the fabricator assembles it. A class that exists only in a catalogue is not a class.
We supply profile, gaskets, hardware and a fabrication manual. The window is cut, assembled and installed by an approved fabricator. The tested classes only hold if the assembly follows the manual, and we say so plainly even when the site is in a hurry.
Every bar is marked with the profile reference and the extrusion batch. From there you reach the billet, the alloy analysis and the press log. Ten years on file.
Grupo Ariztia is 96 flats built in 1971 in Pamplona: aluminium windows with no thermal break, single glazing, Uw around 5.7. The residents approved an envelope retrofit on one non-negotiable condition — nobody moved out.
The work was done from outside on a suspended platform, opening by opening, with the units pre-assembled in the workshop and sealed the same day. Each flat had the work inside it for four to six hours. Series ORB P85-42 HI with double low-E and a warm edge spacer: the opening came out at Uw 1.3 and the building's heating demand fell 38 % in the first measured year.
«The limit was never technical. It was that ninety-six families had to be able to eat dinner at home that same evening.»
If you specify, we return the Uw for your window schedule, the sections as DWG and BIM objects, and an introduction to an approved fabricator in your area. If you fabricate, let's talk about approval and workshop training.