Finish based on self - cleaning and elastomeric acrylic emulsions modified with an additive which makes the paint harder, glass hollow micro -spheres of 3M, and special additives which give the product a high solarreflectance, a high thermal conductivity, a high anti - mold and anti - algae power, an excellent water repellence, a high resistance to UV - radiation and in highly alkaline environments, and finally an excellent permanent elasticity.