We also corresponded with Tim Nyberg, one of The Duct Tape Guys, a performance art duo devoted ... a polyethylene sheet backing, a cloth grid, and a rubber-based adhesive. The polyethylene sheet ...

The sheet has no adhesive, so you need to apply spackle to the back of it before putting it on the wall. The process is messy, and getting the patch to sit flat against the drywall was tough.