A very productive day on the tiny house build. We completed the insulation of the walls and moved on to external trim work. We constructed frames for all the first-floor windows (the loft windows will be unframed).  We are using PVC trim for all areas that are exposed to the weather.  It is crazy expensive but will never rot and is totally free of surface imperfections. We used glue and pocket holes for all joints. We also machined a rabbet along the inside back edge so that the frame would sit flat against the house rather than riding up on the window nailing fins.