Wood-aluminium windows IV78 Swiss Helvetia

Wood-aluminium windows IV78 Swiss Helvetia perfectly combines thermal insulation and aesthetic qualities of wood with the technical properties of aluminium. The Swiss Helvetia system is characterized by a narrow frame profile and laconic, rectangular internal profiling of the wooden sash section.

  • Wooden sections of the sash and frame are 78mm thick; the frame with aluminium cover plates (construction depth) is 91 mm thick.
  • In this system, the groove for installation of the external windowsill is embedded in the lower aluminium finishing profile, thus the windowsill visually merges with the window frame.
  • Standard insulating glass unit is 52mm thick, its thermal transmittance coefficient Ug=0.5 W/m2*K. The narrow frame profile provides the opportunity to increase the glazing area bringing more light into the room and at the same time improving the thermal conductivity coefficient of the window up to Uw=0.83 W/m. (according to DIN EN ISO 10077-1).
  • Sound insulation of the window is 36 dB. By choosing special sound-suppressing insulating glass units, it is possible to increase it up to 53 dB.

 

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