I have a house with a floating slab floor built on a cement foundation. There is a crack in the foundation that is 1/8 inch wide which has existed since before I moved in 4 years ago. I never thought it was a problem until a guy (who is in concrete repair sales ) told me I should get it fixed.
Unless the crack gets wider or there are observable problems in the house, I'm considering not addressing it at all. Is this a bad strategy?
If I do wait to fix it, will it likely be much more expensive down the road?