First of all, please forgive my terminology. I'm new to the whole construction thing, so I'm describing everything the best I can Here's the existing coop. I've posted more recent pics with the windows added, but this is the best pic of the roof. I'm adding a 16 ft addition on the west side (the side opposite the highest point of the roof). The EASIEST thing to do would be to just lip the new roof under the low end of the old roof; however, I would like my ceilings in the new addition to be no lower than 6 ft. Is this possible? What if I slanted the ceiling of addition so the lowest point would be 5 ft?? I really don't want to do this because everyone in my family is over 5 ft and I know we would constantly be banging our heads on the door. Should I just take the existing roof off and make a completely new roof???? Any ideas??? Does anyone know any sites that might give me ideas???