Gemini Passiv

Wood-aluminium system for passive housing

The GEMINI Passiv is a wood-alu system for window constructions designed for passive housing. Thanks to its high utility and durability in the form of excellent thermal insulation, above average tightness, air permeability and wind load resistance, this system is suitable for modern, energy-saving and high performance buildings.

GEMINI Passiv, as a certified component of Passivhaus In stitut, meets its requirements for passive housing, that is: Uw < 0.80 W/(m²K) in combination with triple-glazing Ug = 0.7 W/m²K.

The system utilizes innovative insulation material of high durability utilises on foamed PS, which shares the properties of wood. Thanks to its high level of rigidity, GEMINI clips can be screwed directly into it. Additional components that distinguish this system from more traditional wood-alu designs include the breader main gasket, PE cord, additional central gasket, and the use of  a Swisspacer Ultimate warm edge spacer bar.


  • Tilt & turn windows
  • Fixed windows
  • Mullions and transoms
  • Removable mullions
  • Tilt & slide windows (PSK)
  • Facade connection profiles

Product card Passiv pobierz


A certified result of Uw=0,79 W/(m2K) was achieved in GEMINI Passiv, certyfikat Passive House Instituteusing standard 68 mm wood cross-sections, known from other GEMINI systems.

System features

  • Welded corner connectionsPolaczenia spawane ram aluminiowych
  • Crimped corner connectionspolaczenia zagniatane ram aluminiowych
  • Certified wood section thickness 68 mmgrubosc przekroju drewna
  • Certified glazing thickness 44 mmgrubosc pakietu szybowego

Heat transfer Uw coefficient for sample window 1.23x1.48 [m]