I will be expanding a master bedroom to add a ensuite bathroom. I will be using the existing window area to make it the entry door to the bathroom, see picture below. I always thought the best would be just extend the current gable roof over the addition, matching slope and dimensions.
After removing the siding my plan was to attach rafters on each side to the existing sheathing, support one end of the ridge beam that way, and just continue the same all the way to the other end (16ft long) (similar to Option A below).
At some point, someone mentioned that it would be easier to have the roof for the addition lower than the existing roof line (I don't really know why) like some construction have gable roofs (stepped or two layers). I hope I'm making sense with my explanation.
Any suggestions? Pros and cons? Something I'm not thinking about? Any feedback and suggestions is greatly appreciated. I'm in the Midwest US where wind is something to look for during spring. Not so much snow during winter. Using 2x6 for rafters and a non load-bearing ridge beam for the roof.
Existing room to be expanded