No Insulation in Walls?

Me again, related question. I just drilled a hole in one of the exterior walls of my extension (which is about 10 degrees colder than the rest of my house) and didn’t see or feel (when I poked my finger in) anything fluffy or fuzzy like insulation. Instead, I felt a breeze on my hand and saw a metalic reflective material about an inch away from the sheetrock– this can’t be some sort of insulation, can it? Is insulation always soft and near the sheetrock? If the metallic material is insulation, would I have felt the draft when I made a hold in the sheetrock?

For context, I just bought a house that was newly rehabbed, but have already seen some shoddy work and am slightly wary…

Thanks!

By New Owner |