On Monday, March 6, 2017 at 11:00:04 PM UTC-5, Electric Comet wrote:
not sure if they are available yet but i would bet they are not far off

self cleaning finishes formulated to be similar to the roof material

saw a video about the new stadium in georgia and specifically the
camera shutter like retractable roof

amazing engineering there and mostly it is the material

i might be wrong but i think it is made of etfe

rain washes away everything that settles on it

very close to self cleaning with only the requirement of rain

Leon could install sprinklers and never have to dust that library room he's building. ;-)