1.1.6 Correct use of external solar shading

1.1.6 Correct use of external solar shading


In cooling seasons users have to block direct solar radiation by closing solar shadings to avoid internal overheating. In others seasons solar shadings should be opened to take advantage of natural light and, in heating seasons also of solar radiation to increase internal thermal load.


  • Shading windows can block up to 90% of heat generated by direct sun.

  • Reduce internal summer temperatures

  • Improve comfort

  • Reduce the use of cooling and heating systems


  • Occupant acceptance

  • Design defect

Economic assessment

The initial investment is zero, although it is convenient to train and inform properly users on these issues. It reduces the costs associated to HVAC systems.

References and best practices

  • Impact of external shading devices on thermal and daylighting performance of offices in hot climate regions: sciencedirect

Image gallery


Environment or playable world:

  • Residential

  • Academic

  • Offices

  • All

Carried out by:

  • Public building users

  • Owners

  • Operators

  • All

Reduce consumption of:

  • Heating

  • Cooling

  • DHW

  • Lighting

  • Electric devices

Type of driver:

  • Physical environmental

  • Contextual

  • Psychological

  • Physiological

  • Social

Time framework:

  • Short term

  • Long term

Type of measure:

  • Envelope
  • HVAC
  • DHW
  • Lighting
  • Electrical devices
  • Other
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