Maya and I spent most of the day working on ceiling insulation. We are installing two 2 inch foam core panels in between each pair of 2×6 ceiling rafters for an R value of 20. We are leaving a 1-1/4 inch air gap between the first panel and the roof sheathing to create an air channel that will provide ventilation for our roof. This is necessary to prevent condensation which is a common problem in tiny houses that do not include this feature. The work is slow and arduous. Each panel is beveled on one end to match the roof angle, must be cut to the exact size of the opening and installed in at least two and often as many as four sections. It is easily the least fun part of the project so far. Maya works on the ladder taking measurements and installing panels while I cut them in the basement on the table saw. For a little break from the monotony, I added the side walls around the top of the shower stall.  The joints are so tight that no trim will be needed here. I will wait to install the shower head until the trim has been varnished to match the ceiling.