i dont now, but i have been thinking about it, they make ''high density'' drywall stuff is tuff as hell and i thought it would make good to sheet one side of certain walls, depends on a homes layout and what not but if you knew which walls were hung with it it might help to your advantage in case of a robbery.... maybe double layer walls of which you wanted to use as a safe room..... just some ideas ive been thinking of, not sure what loads it will stop and what not but its in thought process..... when i build new house i plan on buying some sheets and hanging it on some fake walls out in yard and using it to plink on to find what works and what doesnt