Tegula companies have always valued their environmental responsibilities. With ISO 14001 certification, they demonstrate this commitment by utilizing over 50% renewable resources and producing an Acti Roof. This exclusive product is a shingle with photocatalytic granules containing titanium dioxide (TiO2) manufactured by the Italian Tegola Company. The titanium dioxide in the Acti Roof reacts with sunlight to oxidize and purify pollutants, such as NO, NOx, and CO, transforming them into harmless salts (nitrate and carbonate) that can be easily washed away by rain or cleaning.