New Test Method for Solar Reflectance and Thermal Emittance for Roofing Surfaces (J. Arnold/M. Dickinson) [ formerly wk65848 )
1. Scope
Quantify the performance characteristics for the reflectance of roof coatings
Keywords
Solar reflectance, thermal emittance, surface roughness, roof coating
Rationale
Surface roughness is an important characteristic of reflectance of roof surfaces. Measuring the surface roughness to determine how smooth is the surface will help in understanding reflectance