Nice, I like the way they tried to pop the blister.
—::::))))
What you get for building with stucco and foam - mutated woodpeckers. 
Some of those holes could be from Dale’s pellet gun.
Isn’t picture 3 from “Myst or Riven”? I keep clicking on it but nothing happens :shock:
Regards
Gerry
Woodpeckers like EIFS.
Stucco will damage their peckers!
Typically roofs will “peel up” or “blow off” in the corners first since that is where the greatest forces of wind uplift occur. Tht’s my guess as to what those holes are in the corner of the roof.
The 3rd picture looks like a blister probably due moisture in that particular spot that heated up and expanded into the bubble.