Holy Cow! They say it's stronger than self-tapping screws, and they weren't kidding. I needed to hang a board on a basement wall and couldn't get to the studs, just jammed, so I liberally applied some of this stuff and let it dry for 24 hours before hanging anything on the board and I was absolutely sure. I could hang my 250 pound body on this board and I'm fine. This stuff is INCREDIBLE but seriously, it does what it says on the tin. I will be using this material more and more from now on. Many Thanks.