Q. Cracks are beginning to appear in the floors of our new home. The tile was laid directly on the concrete slabs of the subfloor. The day after the slabs were poured, the concrete block walls were ...

Q. I have a hairline crack on two of the tiles of my floor. How would I remedy this? A. There are two options: leave it alone if it’s hardly noticeable or have the damaged tiles removed and replaced.

Q: My house was built in the mid-1950s on a concrete slab. A few years ago, I noticed a crack in the garage floor but I didn't pay it much attention at the time. More recently, I've noticed that a ...