The common rafter is the basic foundation of roof framing. Many contractors believe that the factory built truss is the best thing around because it is easier to install. However, several fire fighters have told me that the truss will fail in the first five minutes of a fire. They also said that they would prefer a “stick built roof” because it is much safer in a fire. Stick built means framed in the old style with hand cut rafters and ceiling joists.