Superhydrophobic coating is a new version of invisible ink used to create hidden street art that is only visible when it is wet. Peregrine Chuch is a Seattle-based street artist who has created a series called Rainworks in which he uses the same sort of hydrophobic coatings that Germany once used.
He views it as a public service and has been assured by city authorities that “what he is doing is legal – the coating is non-toxic, non-permanent, only sometimes visible, and his works don’t advertise anything.”
He says that, “depending on how much the sidewalk in question is used, his pieces may last between 4 months and a year, but are most vivid within the first few weeks of application.” It definitely adds a certain character to the neighborhood. The works remain diverse, and range from simple art drawings to entertaining and motivational messages; he’s even painted a hop-scotch game.