Re-use them for what? Ever house we ever re-side with that on it, gets it ripped off most times.
To my knowledge, there is no asbestos in them, but you don't want to be breathing the dust either. They can get disposed of with normal municipal trash.
To my knowledge, there is no asbestos in them, but you don't want to be breathing the dust either. They can get disposed of with normal municipal trash.