CTSP Episode 132 - Cost of Coatings Pt. 2 - Polyurethanes, Polyaspartics, Siloxanes, and More By: Paul Atzemis, Jack Walker | May 18, 2020 in Podcast Jack Walker and Paul Atzemis continue their exploration into the cost of different coating technology. This week the duo focuses on topcoats as they explore polyurethanes, siloxanes, polyureas, and more. Subscribe via iTunes, Google Play, or Spotify. Categories: Podcast Paul Atzemis, Jack Walker Paul Atzemis and Jack Walker host the Carboline Tech Service Podcast.