I inspected a single family home, built in 1988 in TN.
I could only walk part of the roof before the heavy rain started, but I noticed that several shingles were replaced and some had weird damages.
The drip edge and other roof flashings have been wrong installed and there were several moisture problems inside.
The roof ventilation is mainly thru the gable end, and I could only access part of the attic over the garage, not the main structure. The damages are present throughout a few hundred square feet of shingles.
I noted this in my report.
What do you think might be actually the reason for the damage of the shingles.
There is also one active roof leak present, but I couldn’t determine the source.