What is the recommended action when evaluating fastener back-out in built-up roofing?

Re-roofing or replacing the affected area is recommended when evaluating fastener back-out in built-up roofing because it addresses the root cause of the issue rather than providing a temporary fix. Fastener back-out can indicate underlying problems with the roofing system, such as insufficient fastener penetration, structural movement, or deterioration of the roofing materials. When fasteners back out, it compromises the integrity of the roofing membrane, potentially leading to leaks and further damage.

By opting for re-roofing or replacing the affected sections, you ensure a more durable solution that restores the roofing system to a proper, functioning state. This action mitigates risks associated with fastener failure and extends the lifespan of the roofing system, safeguarding against future issues that could arise from inadequate repairs. Regular inspections may be helpful, but they may not be enough if the problems with fastener back-out are significant enough to warrant a complete replacement or re-roofing of the section in question.