Bought home built in 2005. Discovered under vinyl siding OSB at corners only - covered with some sort of foam wrap. Remainder under siding is plain old blue styrofoam. Some is broken and can see house frame and white insulation. Concerned about high energy bills and possible moisture damage to structure.
Where are you located ?
Hire a home inspector to take a look at it.
Still waiting on where your located…
Houses are not built the same way everywhere.
If he/she could see it we should be able to.