In favor of reducing urban heat islands, the Index company contributes to the installation of Cool Roofs on buildings. Currently, 90% of dark-colored roofs, under solar irradiation, reach up to 80 ° C, with negative effects on the environment and on the durability of buildings' waterproofing membranes.
The company, thanks to the use of specific white paints, reduces the roof temperature up to 40 ° C, at the same time reducing the transmission of summer heat inside the building. The Reflex White finishing membrane, slate membrane for cold roofs, but even more so the White Reflex painting, painting with white pigments, determines a lower heat absorption. The Reflex White Membrane is a treatment that is based on the use of white mineral self-protection, with high saturation and brightness, which allows the creation of roofs with high solar reflectance and very high thermal emissivity. The mantle has both a good diurnal reflection and a high nocturnal emission, bringing both benefits on energy consumption, for air conditioning of the building, and on the problem of urban overheating. White Reflex water-based paint has the same benefits, applied to the waterproof membranes of the roofing, reducing its temperature during the day and speeding up its cooling during the night, reducing the transmission of heat in the living areas below. The paint, thanks to a special white pigment, reduces the temperature more than the self-protected membranes with metal and is even more effective than the Reflex White membrane. The range of White Reflex paints is composed of White Reflex Ultra, white water-based paint with a reflection index greater than 110, and White Reflex SV, a solvent version with the same characteristics as classical painting. Furthermore, the paints considerably prolong the life of waterproofing membranes, reducing the maintenance costs of the roof, and it is possible to paint afterwards on bituminous surfaces even of old mantles, without the use of special membranes. Significant energy savings have been recorded, as well as the improvement of internal summer comfort.