External
venetian blinds

Engineered for Australian conditions.
Inspired by performance and passion.

ev80

ev93D

Stable and refined operation and stability

Supported across
Australia and NZ

External venetians

• Effectiveness of external venetians

  Utilising the innate properties of aluminium, which provides high solar radiation reflection and low absorption and transmission values, the ev80 and ev93D act to effectively reduce household energy requirements, carbon dioxide and greenhouse gas emissions and expenditure.

  Locally and environmentally, these systems maximise internal light and thermal comfort levels whilst allowing external views to be maintained.

• Operation of external venetians

  As a general rule, the ev80 and ev93D are lowered in the vertical or closed (0 degrees) position and raised in the horizontal position (90 degrees).

  The slats can be tilted and rotated at various angles between these parameters. This may be altered, if required, with a maximum 160 degree operating range possible for the ev80.

• Heating reduction in winter

  In the space between a window and a closed external venetian blind, an air pocket forms which prevents heat from being transported outside. Buildings with unshaded windows will emit radiation towards the outside environment and experience significant energy loss as a result.

  The slats act as an effective radiation shield to prevent the loss of heat. The amount of solar radiation and light entering through the glazing can also be incrementally controlled. Simply tilting the blinds allows sunlight to be focused into a room which assists with passive warming during the cooler months.

• Reduce cooling loads in summer

  • • Open the windows whenever the outside temperature is lower than the temperature inside the building.
    • Close the windows when the outside temperature exceeds the inside temperature.
    • If it is necessary to ventilate a room during high outside temperatures, do so briefly and intensively.
    • Over the entire day keep the system in a closed position such that there is just enough light to eliminate the need for artificial lighting. (The visible spectrum of solar radiation contains a great deal of thermal energy which will heat up the room).
    • Use cross ventilation whenever possible.
    • Adjust the slats in such a way that ideal lighting is maintained using daylight for the whole day.
    • Avoid using artificial lighting, noting that daylight provides the room with four times the brightness per watt, which in turn means that artificial lighting heats the room up to four times as much as daylight. In addition and most importantly, daylight increases people’s sense of comfort.
    • In the evening, they should be opened to enhance night-time cooling results.

• External window reveals

  Evaya ev80 and ev93D External Venetians can be seamlessly integrated into external widow reveals, surrounds and shrouds. Unique colour ranges, profiles and slat geometries allow design freedom and individual expression of style.

  Incrementally control the natural entrance of heat, light, glare and privacy. Lighten up a room without it overheating or darken it without sacrificing outside views.

  The perfect solution for architectural facades.