Armawall Trowel On 1.5mm texture coating is a second step in the Armawall Texture Coating System and provides one of the base textures. Trowel On 1.5mm finish is a durable, high build acrylic texture finish with 1.5mm aggregates. Applied by trowel and finished with a polystyrene float, that gives Armawall Trowel On finish it's distinctive texture patterns. Trowel 1.5mm is generally overcoated with Armawall Impact, Armawall Satin, Armawall Armashield or Armawall Roll on Membrane.