Although it feels like a momentous accomplishment to get the last rafter fastened into place, I still have quite a bit of work before I can start adding the roofing panels. I still have to attach the fascia board so that someday in the future we can add gutters and perhaps a water collection system for use in the greenhouse. I also need to add some blocking to fill the gap between the top of the wall and the bottom of the roofing (and comprise the third build in purlin for support) and I have to flash all the fascia. Then I can start putting on the roofing material.
Then I can finish siding in the gable ends, apply waterproofing tape at all the seams, install doors and windows and everything will be weather tight. Hopefully all this happens before snow flies.