Envisioneer offers two quick methods to put a roof on a house. If the shape of the roof matches the exterior wall footprint then use Roof by Perimeter which automatically matches the shape of the roof to the house. If the roof deviates from the outline of the exterior...
When a roof is first created it is a cohesive unit where each segment of the roof will update as changes are made to the individual sides. Roofs can be exploded into individual surface elements that can be changed independently of one another for more in-depth editing...
