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Semistructural mullion/transom curtain wall

The GL-SR50N EFEKT system is used for the construction of lightweight curtain walls of a hanging and filling type as well as roofs, skylights and other spatial constructions.

Its supporting structure is based on a modern and tried-and-tested mullion and transom aluminium system GL-SR50N, which provides a wide range of profiles to choose from and the possibility of selecting sections so that the surface of mullions and transoms is flush with the internal side of façade, and thus its aesthetic joint with development elements inside the building is ensured. It also ensures compatibility with other constructions based on the wide range of products.

GL-SR50N EFEKT is a façade that provides a uniform external appearance of a smooth glass wall divided by the structure of vertical and horizontal lines of 2 cm, thanks to the use of a special system for fixing panes to mullions and transoms. The gaps between glass fields of the façade are filled with a special silicon binder to ensure high tightness of the construction and enhance its insulation properties.

Technical parameters of the system

  • air permeability: class AE 1200 Pa
  • water tightness: class RE 1200 Pa
  • wind resistance: up to 2400 Pa
  • impact strength: class I5/E5


One of the basic advantages of the GL-SR50N EFEKT façade is the rich possibilities of glazing: the wide range of infills available in the catalogue includes one- or two-chamber glass, as well as non-transparent panels based on complex glass. The real novelty, and undoubtedly the hit of this type of façades, is the possibility of using glass units with a laminated pane. The precisely developed infill mounting system allows the flexible and economic adjustment to the technical requirements of a specific project – it is diverse depending on glass weight and includes solutions that enable loads to be transferred from panes to profiles in such a manner that a load capacity of up to 450 kg can be obtained. We have two standard pane mounting variants at our disposal: with the use of continuous or point frame, which allows the manufacturing process and price to be optimised. Another big advantage of the system is the fact that it has recommendations from three world leading suppliers of constructional and weather-resistant silicones: Dow Corning, Sica and Tremco-Ilbruck, which not only enhance the prestige of this solution, but also ensure and guarantee the resistance and tightness of the construction, as well as easy access to technologies for glazing companies. In this system, the possibility of using silicon in different colours is also worthy of attention, as it significantly widens the spectrum for the creation of façade aesthetics.

Façades made in the GL-SR50N EFEKT system have excellent utility parameters. Their use allows not only the desired façade aesthetics to be obtained, but also very high thermal insulating power, which is, due to a strong, worldwide trend oriented at the limitation of the energy consumption of buildings, one of the main criteria for assessment of contemporary curtain walls.

3d designs GL-SR50 EFEKT


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