Elegant and functional – the new Libra light dome

  • Elegant, straight-line design with smooth outer edges – no dirt-collecting edges
  • Outstanding thermal insulation
  • Maximum stability
  • Fixed and ventilated versions
  • Comprehensive range of accessories


Submit enquiry Technical details

Light domes to satisfy highest demands in function and form

INDU LIGHT's innovative "Libra" light dome is both elegant and functional, and is manufactured exclusively in Halle nearby Leipzig to guarantee "Made in Germany" quality. The innovative product line was presented by INDU LIGHT at the BAU trade fair in Munich. It will be available as of spring 2017.

Developed in accordance with the design approach: form follows function 

Form follows function

A modern light dome to meet all your requirements

The light dome without dirt-collecting edges

The Libra light dome stands out thanks to its minimalist design. The form, reduced to the essentials, has an elegant feel, while the straight lines and smooth outer surfaces ensure a fuss-free, simple look, additionally avoiding unsightly dirt-collecting edges. Libra's modest and neutral appearance is perfect both for sophisticated architecture and for industrial applications. 

Libra's thermal insulation meets the highest requirements. Its opaque multiple glazing achieves excellent energy values. The dual gasket seals installed as standard prevent draughts and moisture from entering and also improve the U values. The proven Energy-Line-Silent (ELS) technology, which is already in successful use in INDU LIGHT's Topline continuous rooflights, also features in the Libra light dome. It guarantees optimum thermal insulation properties and soundproofing values. The roof connection via a thermally separated PVC profile also guarantees ideal insulation. By selecting the GRP upstand, thermal insulation is further improved. The low energy loss makes the light dome eligible for EnEV and KfW funding. 

Optimum thermal insulation in the GRP upstand

Outstanding U values provide an excellent energy balance

Maximum stability

The light dome made of polymethyl methacrylate (PMMA) or polycarbonate (PC) is very robust because the individual hinges have several screw connections and can thus withstand high snow loads. To satisfy particularly high stability requirements, the steel upstand can be chosen. The vapour-tight frame corner joint is extremely stable and resistant to torsional stresses. It is primarily used in connection with SHEV units. 

Upstand: GRP, PVC, steel and renovation

From behind: GRP upstand, PVC upstand, steel upstand and steel renovation upstand


Four alternative upstands are available for Libra. The light dome is delivered as standard with the light and elegant GRP upstand. This guarantees maximum thermal insulation and a particularly appealing look. The PVC upstand which can be connected directly to the roof sheeting is especially suitable for foil roofs.

For higher stability requirements – such as, e.g. when using SHEV units – it is recommended to use extremely robust steel upstands that are resistant to torsional stresses. Together with wind deflectors, these ensure safe smoke extraction. 

The steel renovation upstand is especially suited for existing buildings. 

Heights of the upstands

  • GRP upstand: 150, 300, 400 and 500 m
  • PVC upstand: 150 and 300 mm
  • Steel upstand: 300, 500 and 600 mm
  • Steel renovation upstand: 250 mm 

Fixed and ventilated versions

Libra can be installed as a fixed version or ventilated model. But even if you initially opt for the fixed dome, you can easily have the ventilation function retrofitted at any time. Libra therefore allows you to remain flexible, with the option of adapting it to any change in requirements. 

Libra is also available as a certified smoke exhaust unit!

Technical details for light domes

Contemporary light dome technology

2-shell3-shell4-shell Libra ELS 1 Libra ELS 2 
Ur acc. to DIN EN 1873:20162.51.81.5 0.88 0.85 
Fixed / ventilated
Ventilation (230 Volt)
Steel mesh grid / Hail protection grid WG
Steel mesh grid Q (internal)

Nominal sizes for Libra fixed/ventilated in mm

 500 x 10001000 x 2500 1500 x 2400
500 x 1500
1000 x 3000
1500 x 2500
600 x 6001200 x 1200 1500 x 2700 
600 x 9001200 x 1500 1500 x 3000
600 x 12001200 x 1800 1700 x 3000
800 x 8001200 x 2400 1800 x 1800
800 x 10001200 x 2500 1800 x 2400
900 x 9001200 x 2700 1800 x 2500
900 x 12001250 x 1250 1800 x 2700 
1000 x 10001250 x 2500 2000 x 2000
1000 x 15001500 x 15002000 x 2500
1000 x 20001500 x 1800
1000 x 24001500 x 2100

  • Dual gasket seal system
  • Stable frame
  • No dirt-collecting edges
  • Gleaming traffic white colour
  • Assembly-friendly
  • Renovation-friendly
  • Made in Germany

    Libra Product Sheet

Accessories for light domes

Hail protection grid | Steel mesh grid

Safety tested in accordance with DIN 4426

Accessories including hail protection grids, steel mesh grids and shading flaps are provided for maximum safety. These can be flexibly retrofitted at any time to meet the current requirements in safety and personal protection. 

Fall and fall-through protection

Continuous rooflights and light domes without structural features to render them permanently fall-through proof must include suitable covers or suspended structures which prevent individuals from falling through. INDU LIGHT protective systems are available for continuous rooflights and light domes and can be retrofitted onto all current INDU LIGHT products.

More information

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