UV, VIS and NIR reflectance (spectrum reflectance) of thepainted and unpainted (4 cm 5 cm) specimens was measured according to ‘‘ASTM E903-96: standard test method for solar absorption, reflectance, and transmittance of materials using integrating spheres’’, using a spectrophotometer (Shimadzu,model UVPC 3101 PC) equipped with integrating spheres IRS 3100. The standard reflectance (reference material)was Barium sulphate (BaSO4)