joists on the north side

 Once the north wall was in place, Martin could start installing the joists for the second floor.  He had to take the planking off of the north side of the roof and then adjust the slope to all space for joists and their installation

Of course, once the joists were installed, everything needed to be tarped to protect it from the elements.

north wall installed

 Martin has the north wall installed and wrapped. The window is temporary, but light was needed to allow work to continue inside.

2nd floor underlayment and bridging

Half of the floor for the second floor is in. Martin has the joists in and the underlayment is down. Martin has the bridging in.