Artificial lighting typically accounts for one third of a building’s CO2 emissions. Maximising available daylight is a key element of a building design. Assessing the sunlight path and impact of a building on adjacent properties is also an important consideration when planning a development.

KJ Tait Engineers have the resources and experience in the design, simulation and analysis of daylight and sunlight assessment to accurately predict and show the behaviour of daylight and sunlight both internally and externally to a development.

We can provide daylight impact assessments to demonstrate compliance with the relevant standard (BRE, BREEAM, CBDM and Wellness Standard) or to assess the impact which new developments will have on the existing daylight and sunlight within adjacent properties and gardens for planning applications.

Capabilities and services available include:

  • Insight on sunlight availability to landscape areas
  • Daylight autonomy modelling
  • Visual comfort and view of sky studies
  • Inform energy models by predicting solar gain and artificial lighting needs
  • Climate-based Daylight Modelling (CBDM) Useful Daylight Index (UDI) and Spatial Daylight Autonomy (sDA) to optimise glazing ratio and orientation
  • Average Daylight Factor (ADF) calculation for BREEAM credit requirements
  • Spatial Daylight Autonomy (sDA) and Annual Sun Exposure (ASE) calculation for the Well Building Standard requirements.