Photo 1: I chose not to go with drywall, and instead, wood. No mudding, no sanding, no cracking (this home will remain modular). And boards look cool. To clad the entire interior of the home with boards without spending a small fortune we ripped down a huge pile of 3/8" plywood into a board size. This is a fraction of the amount. Photo 2: spray foam mania. It's messy but it seals it up! Photo 3: With attention to detail Blaine finishes a wall, and each completed wall is a small victory, we're getting close to a finished shell! Paint party coming up.