Been slowly working on my foamie for the past few months. Thank you to everyone on this forum for all the great info and advice.
I've gotten my floor platform all done, and also have my foam wall panels cut out. I'm at the point where I need to attach the walls to the floor. I'm struggling to figure out how to make the floor and the walls perpendicular (or as close as possible). The main issue is that my garage floor isn't perfectly level. My current plan is to jack up the trailer platform on four corners and make it level using a bubble level. Then just make the walls vertical using a bubble level/plumb bob. However, I'm worried that won't be accurate enough. What does the community think? Any other ideas?