Technal GEODE Curtain Wall System


Technal GEODE Curtain Wall System

GEODE is a comprehensive curtain walling suite offering designers high thermal performance to meet even the most stringent building regulations, and a wide range of aesthetic options based on a single system.

The variety of curtain walling applications, uses the same mullion and transom grid, and enables designers to vary the external appearance of the building envelope whilst benefitting from the design and construction options of a fully integrated system.

The GEODE range offers all the inherent qualities of aluminium: aesthetics, durability and low maintenance, and combines innovative technology and construction features with advanced manufacturing techniques for quality installation and long-lasting performance. This system is the result of Technal’s ongoing development program and has been rigorously tested in accordance with European standards for wind resistance, water tightness, and air permeability.


CharacteristicsGEODE Curtain Wall
Profile SystemAluminium profile with PVC spacer gasket in between to achieve thermal insulation
Module depth40 – 240 mm
Module height52 mm
Max. sizeGlass volume up to 6 m²
Max. weight per panelUp to 400 kg by glass volume 
Glazing6 – 32mm
  • Full-fixed glass, flat or angled curtain wall up to 20°
  • Combination with concealed opening vents such as projecting top-hung, parallel, tilt and turn, and fire access 
Air permeability up to classA4 (EN 13830)
Water tightness up to classR7 (EN 13830)
Wind pressure resistanceC5 (EN-12211)
Shock impact
  • PASS under pressure and depression 1600 Pa and 2400 Pa (sudden pressure) (EN 13830)
  • Satisfactory (No damage as a result of a dynamic shock)
Sound insulation up to40 dB (Ra, Tr) (EN ISO 140 / EN ISO 717) when Rw glass = 42 dB
Thermal performance up toUcw (Thermal insulation) = 1.2 W/m²K with Ug = 1.0 W/m²K + Insulating spacer


Visual consistency
Unique aluminium structure for all external appearances. The discreet and consistent 52 mm for the mullions and transoms give a uniform appearance to the entire GEODE range.

Concealed opening vents
These opening frame solutions provide natural ventilation whilst maintaining the aesthetic lines whatever the appearance of the external façade.

Thermal efficiency
The structure’s integrated thermal break and the possibility of using the highest performance glazing means that the lowest Ucw coefficients can be achieved. Energy consumption for heating, lighting, ventilation and air-conditioning is reduced.

Variety in the appearance of the façade
The range of mullion-transoms and external caps makes it possible to vary the appearance of the façade.

Increased resistance to climatic conditions
Fully injectable, the mullion/transom assembly spigot ensures the precise and controlled injection of sealant to ensure weather tightness. A secondary mullion drainage system enhances weather performance and quality. The system is zone drained and pressure equalized to ensure optimum performance and effective drainage in the most demanding environments.


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Site Procedure 1: Sub-frame Stage

Installation of Sub-frame
– Sub-frame is cut into size on site
– Corner joint is used for ensuring the perpendicularity of sub-frame
– Galvanized strip and Hilti products are used to fix the sub-frame to the wall structure
Advantages of Sub-frame system
– Generally has better water tightness performance
– Can be used for precast or cast in-situ wall systems which do not require plastering
– Allow greater flexibility in the sequencing of works of other trades; the sub-frame is installed first so that the wet trades around the window can be completed before subsequent installation of the main frame
– The main frame are installed after completion of all wet trades around the windows and hence, are subjected to lower risk of physical damages