LAMILUX Flat roof window: The advantages

Energy efficiency

  • Available with double or triple thermal insulation glazing (with toughened glass, and with clear, matt film if required) with Ug values of 1.1 to 0.7 W/m²K
  • Completely free of thermal bridges, with a value of 1.3 to 1.0 W/m²K, depending on the type of glazing
  • Thermally insulated, jointless GRP upstand, 15, 30, 40 or 50 cm in height, with U values of 0.5 W/m²K to 0.9 W/m²K (depending on the characteristics)
  • Outstanding air-tightness due to the new double balloon-type seal: Performance class 4 - tested in accordance with EN 12207
  • Thermally optimised structural mount, such as a heat-insulated base flange
  • LCA made easy: For our CI System Glass Element F100 there is an comprehensive product declaration according to ISO 14025 and EN 15804 (EPD - modules A1 - D)

Comfort & design

  • Farewell to dirty edges: The newly designed frame profile has a smooth transition between the glazing and the frame, allowing rainwater to run off without any obstructions.
  • The new chain drive technology complies with protection class IP54 and allows easy opening for ventilation purposes.
  • 230 V / 24 V - chain drive - concealed from view and with new technology that complies with protection class IP54
  • Generous daylight intake and a permanently clear view thanks to self-cleaning properties and scratchproof glazing
  • Extra convenience, if required, with structural mounts for membrane roofs, prepared in the factoryOptimised soundproofing and minimised rain noise thanks to special glazing (Rwp = 38 dB)
  • White, silk-matt appearance inside - No additional drywall construction required
  • Optional connection to comfort control unit with wireless remote controlsSolar protection inside and outside (optional)


  • Tested watertightness, even in high winds (impervious to driving rain, in accordance with EN 12208, Class E 1500)
  • Extremely high load-bearing capacity due to optimised profiles
  • Fall-through-proof in line with GS-BAU-18
  • Excellent stability under wind and snow loads
  • UV-resistant edge bond


  • The first building approved flat roof window in ‘structural glazing’ design – certified by the German Institute for Structural Engineering (Deutsche Institut für Bautechnik, DIBt) in Berlin.
  • Condensation resistant between glass panels thanks to thermally decoupled edge bond, unlike plastic domes
  • Passive fire protection: Compliance with DIN 18234 for the prevention of fire spread on rooftops without additional measures (such as gravel fill)
  • Can be used as an SHEV system in stairwells
  • Delivery of CI Systems Glass Element F100 ready installed on an upstand