# Indoor Environment Quality 1.5 Daylight Access - Main Living Areas
# Applies to
Multi-unit development (Apartments, aged care and hotels) Applies when daylight metric selected = Spatial Daylight Autonomy
# Objective
To provide a high level of amenity and energy efficiency through design for natural light.
# Summary
This is a mandatory credit. A minimum score of 66% is required in this credit to pass the IEQ category.
To claim this credit, you must use daylight modelling software to show the % of floor area achieving adequate daylight and visual acuity daylight to main living areas.
Points are awarded where adequate daylight is achieved to at least half the floor area of the main living area of every dwelling. Visual acuity daylight to at least 90% of the floor of the main living area of every dwelling must also be demonstrated (refer to ‘single metric bounds’ for potential approach).
Additional points are awarded where adequate daylight is achieved to a higher proportion of the floor area of all main living areas.
Maximum points are awarded where adequate daylight is achieved to 100% of the floor area of all main living areas.
# Documentation & evidence required
A daylight report detailing assumptions used and results achieved. Refer Spatial Daylight Autonomy (link to this section) and Daylight modelling report (link to this section)
# Other Considerations
- Specify glazing with high Visual Light Transmittance (VLT) and combine this with shading systems such as blinds, overhangs or retractable awnings, rather than using heavily tinted glass.
- Light shelves can increase daylight penetration by 'bouncing' light deeper into a room