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Flat Roof Access Hatch Comfort Duo | LAMILUX
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Flat Roof Access Hatch Comfort Duo | LAMILUX

  • Use

    Roof exit hatch, skylight
  • Applications

  • Characteristics

    Flat window, generous daylight incidence, self-cleaning, thermally insulated upstand, minimized risk of condensation, emergency stop function
  • Sizes

    Top roof edge dimensions 120 x 300 cm
  • Certification

    Compliance with DIN 18234 without additional measures (prevention of fire expansion on the flat roof), resistance to external fire exposure from flying sparks and radiant heat with classification Broof(t1) according to DIN EN 13501-5, fall-through proof according to DIN 18008-6
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More about this product

The LAMILUX Flat Roof Exit Comfort Duo opens a two-section flat roof window, measuring 120 x 300 cm, towards the longitudinal sides. To configure BIM-, CAD- and product data for this product according to your individual requirements click here.

Design and Comfort

  • Generous daylight incidence
  • Convenient access to the roof terrace via stairs (on-site)
  • Self-cleaning due to 5° inclined upstand
  • Partial glazing on a 3° sloping upstand on the eaves side
  • Infinitely variable ventilation position of both leaves
  • Clear optics: no interfering edges and no visible drive units in the interior
  • Variety of colors according to RAL card (edging profiles)
  • Leaf system, motor opener and upstand are completely pre-assembled at the factory

Energy Efficiency

  • Complete construction without thermal bridges
  • Completely thermally insulated upstand
  • Can be equipped with the highest quality functional glass
  • Minimized risk of condensation

Energy Efficiency
Isothermal lines indicate points featuring the same temperature and reveal a measurable customer benefit in a thermal diagram. E.g. The 10° isothermal line is a measured variable used to ensure protection against condensate. If this line wanders outside the confines of a structure, condensate or even hoar frost will form precisely at this point.


  • Closing and opening from outside possible via optional key switch (min. IP54)
  • Emergency stop function during closing by light barrier
  • As a standard: Outer pane TSG, inner pane LSG


LAMILUX glazing offer considers the following individual aspects

  • Daylight incidence - transparency and light scattering
  • Energy efficiency / thermal insulation
  • Sun protection / heat protection
  • Soundproofing
  • Self-cleaning
Description W102 W103 (with matt, light-colored film)
Ug-value 1,1 W/(m²K) 1,1 W/(m²K)
Light transmission 80 % 54 %
Total energy permeability 62 % 59 %
Sound insulation 38 dB 38 dB

Ventilation Drives

  • 4 x 24 V linear drives, weatherproof, with control panel
  • Protection class IP 65, 1 A power consumption per motor

Upstand - Stability and Thermal Insulation

The base of the system is a seamlessly manufactured upstand that provides an ideal thermal connection to the building structure. LAMILUX upstands made of glass-fiber reinforced plastic are CFC-free, completely pigmented white and thermally insulated with rigid polyurethane foam. They have a weatherproof seal and are not considered to be burning drips and comply with DIN 18234 without additional measures. To make them very stable and torsion-resistant, LAMILUX upstands have a closed box cross-section.

The continuous insulation, at least 55 mm thick, ensures an excellent heat transfer coefficient of 0.6 W/m²K. The upstand is 35 cm high on the eaves side and rises by 6° to 68 cm on the ridge side. This supports the self-cleaning of the element.

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Contact manufacturer

Contact manufacturer


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