Shreded / faulty Insulation Covering?

Anyone ever seen this done to insulation wrap? There was evidence of mice but why would they shred the wrapper and not touch the inulation?



The gray flex duct was subject to recall some years ago because it deteriorates that way when exposed to light. It’s a product defect.

That is just what what I thought when I saw it…:slight_smile:

Wow . . . that answer can only come with exsperience - that’s for sharing yours!

It was hand-me-down knowledge when I learned it many years ago too. Not all of the gray stuff is suscetible to that, but when you come across some that is, you will no doubt recognize it.