When not popular, the saltbox roof is perfect for producing vaulted ceilings partly of a house and also a corresponding loft overlooking the vaulted ceiling rooms. A mansard roof is often a 4-sided gambrel roof, with either side using a double slope of 1 steep slope and a single shallow http://roofing32971.targetblogs.com/3123163/new-step-by-step-map-for-roofing