In most cases, woodworm infestation is caught early enough and treatment with insecticide is sufficient to kill off any active infestation and protect against future problems. I some instances we find it necessary to replace or strengthen heavily infested timber sections, howeverm this is usually to isolated sections.
In this case, due to the severity of infestation and the complex design of the timber truss sections, repair (although not impossible) would not be practical or economical and complete replacement of the truss sections is the most appropriate option.
