Occasionally we run across a builder who refuses to use roof trusses. His reasons, other than something about tradition and quality, usually include, "They sent the wrong size trusses," "We nearly got killed putting them up," or "The roof was crooked and flimsy." These common complaints point toward lack of experience rather than any type of truss system failure. As with any new or different building product, there is always a learning curve. Fortunately, costly errors can be avoided if the builder takes the time to learn how to order roof trusses properly, develops good site handling and erection practices, and follows simple installation, straightening, and bracing methods. Usually we can set the trusses and sheathe a 2,500- to 3,500-square-foot colonial