Daylight and Sunlight Modelling

The provision of sufficient natural daylight is known to boost the health and wellbeing as well as performance of individuals in buildings. We can undertake dynamic simulations to predict daylight levels to ensure client targets and aspirations can be achieved from the outset.

Visual comfort is another factor which clients and planning departments are more frequently asking design teams to consider because of the known health benefits and sustainability impact it offers.

Achieving suitable daylight conditions can have a positive influence on building occupants (e.g. health and productivity), as well as reducing the requirement for energy and carbon intensive artificial lighting.

We use the IES Virtual Environment software to calculate the daylight provision in buildings and help our clients meet the recommended industry levels such as:

  • BREEAM Hea 01 Visual Comfort
  • Climate Based Daylight Modelling (CBDM)
  • BRE BR209: Site Layout Planning for Daylight and Sunlight
  • Building Bulletin 87 (BB87)

We can also undertake overshading calculations to assess the impact of a proposed building or structure on existing properties or solar panels.

Through early engagement on projects we can optimise window arrangements for achieving the required daylight levels whilst considering the impact on thermal comfort and Building Regulation compliance.


MAST have a close working relationship with Carbon Futures.  We engage them on a range of residential projects where they work with us to develop robust SAP and energy strategies ensuring that we exceed the minimum standards.  They undertake energy and thermal modelling, provide Section 6 certification as well as EPC’s.  We value their input in undertaking options appraisals and value engineering exercises, with them adopting a thorough and professional approach, often working to tight timescales.  We look forward to working with them in the future and would be happy to recommend their services.

MAST Architects