Here are a few shots of the interior of the boat trailer. Originally, I wasn't planning on insulating it at all. I painted, the winter came, and I decided I better insulate after all. I did a combination of salvaged rigid foam insulation and bought denim/cotton UltraLogic insulation. The interior is salvaged fir and redwood. The electric runs through the walls, and through the ceiling, leading to a chandelier toward the windows. The trim work is yet to be completed. I am considering a pressed tin ceiling.