Learn how to tell when a foundation crack might indicate a serious structural problem—and when you can repair it yourself and rest easy.

Foundation problems are probably the biggest structural concern for any homeowner or potential buyer, so it’s no surprise that we tend to get a little panicky about seeing cracks in basement walls.

Q Is it worthwhile sealing a crack on the outside of my house foundation? The basement is finished so I can only get to the outside. I’ve seen your video about a carbon fibre system for concrete crack ...

Q: My house was built in the '40s and has a cinder-block foundation. On the inside, it has paint that's peeling. Some of the blocks are crumbling, but the problem is not deep, less than an inch. In ...