Hi everyone 

How do you deal with rooftops with undulating designs? We current have a project whose roof varies in slope (Portion A has a slope of 3:12, Portion B has a slope of 7:12, Portion C has a slope of 1:12, Portion D has a slope of 2:12). When averaged, we come up with an average 3:12 roof slope. 

Has anyone dealt with this before?