You walk downstairs and notice that your basement carpet is wet. You investigate and find that you have a crack in your foundation that is leaking. Since all you have is a leaking hairline crack there is no way you're going to dig up around your house to waterproof the whole basement because that costs a fortune. Well, you're in luck. You can get a crack sealed, usually for a few hundred dollars.In this post we explain how basement foundation cracks are sealed and how to avoid spending a fortune fixing a relatively simple basement leak.