Has anyone used the new 3M Smog-Eating Granules on a roof before? Malarkey and Soprema are offering this as an option for their roof shingles. Seems like a great technology for urban areas, but I'd be curious to see if anyone here has actually successfully specified and installed it.
https://www.3m.com/3M/en_US/roofing-granules-us/products/smog-reducing/
Thanks!
Misha