/, Contextual, Cooling, Operators, Owners, Physical environmental, Psychological, Social/2.1.29 Application of an appropriate solar reflectance coating for the external walls

2.1.29 Application of an appropriate solar reflectance coating for the external walls

2.1.29 Application of an appropriate solar reflectance coating for the external walls

Description

Dark colours absorb the solar radiation more than clear ones which are reflective. The measure consists in the use of dark or clear coatings for the external wall depending on the climate conditions. In cold climate to increase heat absorption dark coloured coatings will be used, meanwhile in hot climate clear coatings will be used to reduce heat gains.

Benefits

  • The measure is adaptable to all climate conditions

  • Easy to install

  • No professional workers required depending on the construction type

  • Darker exterior wall paint would prevent the growth of algae as it keeps the surface warmer

Limitations

  • Freedom of aesthetic choice is limited for users and architects

  • Compatibility of the reflective material with the existing wall

  • Regular maintenance could be necessary

  • Dust could reduce the properties of reflectively or absorption

  • It is not as important as roof coating

Economic assessment

Initial investment: medium. The cost of coating will be approximated of 5 €/m2 at which the cost of application will be added. It reduces energy costs in cooling or heating.

References and best practices

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CHARACTERIZATION

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
2017-10-17T10:43:46+00:00