Why these two fail before anything else
Fascia sits right at the roof edge. When gutters overflow, or there is no drip edge (the metal strip that steers water off the roof edge), the fascia board gets soaked every time it rains. Soffit sits just behind it, shaded from the sun, so it stays damp longer than the walls below.
They are also the least looked-at part of the outside of a house. By the time anyone notices peeling paint, sagging panels or a gap that birds or wasps have found, the rot is usually well along.
Soffit is also where your roof draws in fresh air. When it rots or gets covered over, that airflow stops and the attic overheats, which then ages the roof from underneath.








