What is a common indicator of failure one should look for in a roof deck?

A common indicator of failure in a roof deck is the presence of signs of moisture or rot. This is crucial because moisture intrusion can lead to significant structural damage over time. When water penetrates the roof, it can compromise the integrity of the decking materials and underlying structure. Signs of moisture may include staining on the ceiling below, visible water leaks, or damp spots in the attic, which can indicate that the roof is no longer effectively shedding water. Additionally, rot in the wood can weaken the structure, making it essential for a home inspector to look for these signs during an inspection. Identifying moisture or rot not only highlights current issues but can also forecast potential future problems, enabling homeowners to address them proactively.