I bet the insulation looks great from the other direction.

The thickness of insulation is important because it affects how much heat is lost, which can impact energy costs and the environment. Thicker insulation holds more heat than thinner insulation. For example, poor quality insulation that's 8 in thick may have a higher R-value than high quality insulation that's only 1 in thick.

https://video.wixstatic.com/video/6bdeee_ccd5ecc851984c9683cad4ad8fc56146/360p/mp4/file.mp4