Prefabricated timber roof trusses are designed by a competent designer with a CAD based design program from International Truss Systems (ITS) according to South African National Standards (SANS) and engineering principles.

These truss designs are accepted by the local authorities, roof inspectors and engineers. Prefabricated trusses save time in the sense that manufacturing is done in a controlled environment. Erecting of these trusses is much easier as the truss is lighter than bolted trusses and fewer adjustments are needed afterwards.