Since the launch of the world’s first smog-reducing shingle, Malarkey Roofing Products has provided the industry with enough roofing materials to protect more than 400,000 roofs. Because each roof has the smog-fighting capacity of two to three trees, that’s the equivalent of more than 1 million trees of smog-reducing power. 3M Smog-reducing Granules, integrated into Malarkey Roofing Products’ shingles, are designed with an integrated photocatalyst that reacts with UV light to transform the nitrogen oxides in smog into a plant-usable form of nitrogen. The photocatalyst does not get consumed in the reaction, so the smog-reducing capability is a continuous cycle refreshed with rain or dew. In addition, integrating Smog-reducing Granules from 3M into roofing shingles doesn’t change the shingle performance or its visual aesthetics.