Third period (2013): The materials with the highest SRI levels after 3 years of exposure are: Natural clay- colonial- terracotta -T01- and Enamel clay- roman- terracotta-T08- with an albedo =0.71, and SRI= 90%. The tile which showed the least favorable behavior was Matte concrete- French - blackT12-, with an 0.31 albedo, surface temperature of 64ºC and SRI= 47%. (See T01-T03-T08-T12 and T13 in Table 3).