will wall covering adhesive corrode tin foil?
Read the label on the yarn.
It depends on the yarnUsually the number of yards is printed on the paper label that comes wrapped around the yarnIf not, you could try finding the specific yarn on the Red Heart websiteRed Heart yarn is manufactured by Coats and ClarkI included their website belowGood luck!
I tried this 50 years ago with aluminum foil To combat raising damp It worked on the one wall but not on the others Never found out why as I'd wasted quite a lot of wall paper And could not afford to repeat the experiment but perhaps those three walls were wetter So I used lead foil that was made for the job Don’t know if it’s still made