 failure because of a structural overload so that's a bigger problem to begin with and you'll know that that crack is very different than something that's just you know superficial yeah good point so if you're wondering how do you fix cracks like these they're not diy projects right what you can do is seal to stop the water you know if it's a crack that's maybe you know eighth or quarter inch wide you can seal it with a silicone caulk and then monitor it for movement