Just finished building my 32x48 stick built workshop. I have 2x6 framing on 24" centers. I plan to insulate the walls with r19 faced fiberglass insulation. I wanted to used R30 faced fiberglass for the ceiling but can only find batts and no rolls. I am concerned with how many seams I would have using the batts. The option is to put up plastic and blow in cellulose or use unfaced installed from above (not fun). Any advice what would be best and resonably cost.