Undercoating today. Man this stuff is like Molas...undercoating in January.
I started with a small brush, then I just dumped a pile of it and spread it out. Later I used a scrap piece of stainless to screed? it out, kinda like screen printing ink. then brush to even it out, worked great. The undercoat was free leftovers from a commercial trailer company. I took home a gallon when they cleaned out their 55 gallon drum spray rig. Next I will cut out steps to mount the walls to the floor.