ramiskytte

Hi i am a newbie at this program and i am having a hard time getting on the upper edge of a flat roofed building. i seems like a can only apply PV modules on the walls. what am i doing wrong. i need to place pv modules on the roof thanks in advance for your help

Hi There I am having a hard time placing PV-modules on a flat roofted building. It seems like i only can apply pv modules on the walls, and not the roof? What a my doing wrong? i cant get on the upper edge of the building! thanks in advance (the newbie)