How important is continuous lateral bracing in roof trusses? Is it detrimental to the roof integrity if they are missing?
To answer this question directly, continuous lateral bracing is VERY important. Certain truss members require this bracing in order to carry the full design load. Without it, these members may buckle at loads far less than what they were designed to support. The truss design drawings will specify which members require this bracing and the approximate location that this bracing is to be applied. It is the responsibility of the building designer to determine the size, type and method of attachment of this bracing to the trusses, as well as how this bracing is to be tied into the rest of the building. It may be possible to brace the truss members with other types of bracing, such as “T,” “L,” or “scabs.” Contact your truss manufacturer for acceptable alternatives for any specific application.
