• Metal Roofing
          • Roofing

            Explore our range of steel solutions, applicable profiles, colours and patterns for your next steel roof.

          • Wye House high angle over-looking the coast. The cladding and roofing is UniCote Coastal.
    • Fascia & Guttering
          • Fascia & Guttering

            Whether or not you have a steel roof, complete the look of your home with UniCote fascia, gutters and downpipes.

          • UniCote Fascia, gutters and downpipe
    • Garage Doors
          • Garage Doors

            Enhance your home’s facade with exclusive range of UniCote LUX garage door textured patterns, including timber, natural and exotic finishes.

          • UniCote LUZ Zinc Graphite Garage Door
    • Walls & Cladding
          • Cladding

            Be inspired and leave a lasting impression by selecting cladding from our unique range of colours, patterns and solutions.

    • Insulated Panels
          • Insulated Panels

            Steel solutions, inspired colours and patterns for your insulated panel application.

          • Brimbank Lifestyle and Aquatic Centre, UniCote LUX Weathered Iron insulated panels
    • Sheds
          • Sheds

            Steel solutions, inspiring colours and patterns for your shed project.

    • All Colours & Patterns
    • Essential
          • Essential

            Discover our diverse pallette of 23 captivating colours, from timeless classics, modern shades and coastal Hamptons inspired colours.

          • UniCote Coastal, Slate Grey - Portsea Hotel
    • Tasman
          • Tasman

            View our extended colour range inspired by the captivating New Zealand landscape.

          • Architectural house from New Zealand with cladding and roofing in Tasman colours
    • LUX
          • LUX

            Bring your next project to life with our unique range of patterned and textured finish.

          • Latrobe Valley Govhub, UniCote LUX cladding and sofits in Ashwood
    • Compare Metal Solutions
    • UniCote Select
          • UniCote Select

            Data sheet, performance, technical information and warranty about our ‘UniCote Select’ steel solution.

          • UniCote Select Euengella Project
    • UniCote Coastal
          • UniCote Coastal

            Data sheet, performance, technical information and warranty about our ‘UniCote Coastal’ steel solution.

    • UniCote Extreme
          • UniCote Extreme

            Data sheet, performance, technical information and warranty about our ‘UniCote Extreme’ aluminium solution.

          • Bondi Icebergs
    • UniCote LUX
          • UniCote LUX

            Data sheet, performance, technical information and warranty about our ‘UniCote LUX’ textured and patterned steel solution.

          • UniCote LUX cover-Govhub
    • Colour Library
    • Inspiration Gallery
          • Inspiration Gallery

            A curated collection of architectural projects showcasing the colours, patterns and textures of our UniCote products in varied environments.

    • Case Studies
          • Case Studies

            A collection of remarkable projects that exemplify the use for UniCote for roofing and cladding.

    • Articles
          • Articles

            2 minute reads: industry insights and design trends that elevate the use of pre-painted steel.

  • Why UniCote®

Understanding Solar Absorptance (SA) and Solar Reflectance Index (SRI)

When it comes to choosing roofing materials, understanding how they interact with sunlight is crucial. Solar Absorptance (SA) tells us how much solar energy a material absorbs, impacting its temperature. On the other hand, Solar Reflectance Index (SRI) measures how well a material reflects sunlight, affecting its cooling abilities. These two metrics, SA and SRI, help us pick the right materials for energy-efficient and comfortable buildings, while also considering their environmental impact.

Solar Absorptance (SA) is the fraction of the total incident solar radiation that is absorbed by the roofing material. It is expressed as a ratio between 0 and 1, with a lower number a
cooler option. These are nominal values calculated in accordance with ASTM E 903-96.

Solar Reflectance Index (SRI) is a measure of the solar reflectance and emissivity of materials. Measured on a scale of 0 (least reflective) to 100 (most reflective). These are nominal values
calculated in accordance with ASTM E1980-11.

To sum up, Solar Absorptance (SA) and Solar Reflectance Index (SRI) are key factors in choosing the best roofing materials. By showing us how materials interact with sunlight, they help us make informed decisions for energy efficiency and comfort. As technology advances, keeping SA and SRI in mind will continue to be vital for creating sustainable and cooler urban environments.

The solar values for the UniCote® Essential colour range can be viewed in the downloadable brochure on this page. Alternatively, expand the Solar Values dropdown available on individual colour pages.

Solar Values dropdown shown on UniCote® Off White colour page.