Latham Luminance Contrast Calculation Tool


This calculator uses the Bowman-Sapolinski Equation to calculate the Luminance Contrast between the Luminance Reflectance Values (LRV) of a Latham Full Abrasive Stair Tread Nosing product and a nominated background surface, in line with Appendix B part B4 of AS 1428.1-2021, it is also referred to in part B4 of AS 1428.1-2009 and Appendix E part E3 of AS 1428.4-2009.


Luminance Reflectance Value (LRV) for step material

Based on the LRV rating of your background flooring/paving as provided by you (LRV 0 ), for your project, the Latham Supagrit full abrasive infill colours as below will meet or exceed the Luminance Contrast specifications of AS 1428.1 2021. The numbers next to the colours correspond to the luminance contrast achieved.
Colours That Have PASSED

Asbra Safety Stair and Flooring Catalogue

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Suitability Statement

Please note that these are Latham Supagrit colours only and can not be substituted for other manufacturers' visually similar colour options. Your certifier remains the final arbiter of compliance so please confirm with them prior to proceeding. Click here for further information on calculation along with T & C’s.