LAMILUX Roof Exit Hatch Comfort - Double Flap:
The technical details

Design details

  • Head clearance needs to be taken into account when the client is planning and building the stairway
  • Two electric motors attached to the external corner section
  • Four-layer seal system

Thermo-active design

A patented structural ribbing uses the heat energy of the room air below the base for the glazing. This increases the surface temperature in the aluminium frame.
The result is flawless isothermal characteristics and, consequently, minimised risk of condensation.

Energy efficiency

Isothermal lines indicate points featuring the same temperature and reveal a measurable customer benefit in a thermal diagram. The 10° isothermal line, for example, is a measured variable used in building physics to ensure protection against condensate. If this line goes off a structure, condensate or even hoar frost will form precisely at this point.

Upstand – Stability and thermal insulation

The up stand forms the base for construction (size at upper roof edge 120 cm x 300 cm). It provides a thermally optimum mount on the building structure. Manufactured by LAMILUX using fibre-reinforced composite, our upstands are CFC-free, solid white in colour and thermally insulated with polyurethane hard foam. They include weatherproof sealing and are classified as non-flammable components with no burning droplets. LAMILUX upstands feature a closed box section, which makes them very stable and warp-resistant.

The continuous insulation 55 mm thick provides an excellent heat transmittance value U of 0.6 W/m²K. The up stand is 40 cm high on the eave side and climbs at an angle of 3° to reach a height of 55 cm on the ridge side. This ensures that optimum self-cleaning is achieved on all sides of the structure.