Colour Classification in Accordance with the New South Wales BASIX
The New South Wales Building and Sustainability Index (BASIX) has also classified colour into light medium and dark on the basis of their solar absorptance. The light, medium and dark categories are also to be used in NatHERS accredited software if the verification path is used to meet the BASIX thermal comfort requirement. See the tables below for the solar absorptance and BASIX colour classification for our products.
SA=Solar Absorptance: The classification of colours in the BCA is based on solar absorptance, which is the inverse of solar reflectance, expressed as a ratio between 0 and 1. A SA value of 0 indicates that a roof absorbs none and a value of 1 indicates that a roof absorbs 100% of the incoming solar radiation.
The solar absorptance values shown are not applicable for COLORBOND® Stainless steel. See the individual colour swatches for the SA value for each product and colour.
BCA = The Building Code of Australia (BCA) has classified roof colour on the basis of their solar absorptance, referred herein as Light (L < 0.40), Medium (M < 0.60), Dark (D > 0.60). See the individual colour swatches for the ratings available for each product and colour. BCA classification is correct at the time of publishing but may be subject to change. Check your local state building regulations at the time of your project.