I'm a new home owner who has been living in house that was built last year. Upon moving in the builder mentioned that grout needed yearly maintenance--would he referring to re-sealing the grout? Are there other types of maintenance involved for tile grout? Any recommendations here about the process would be greatly appreciated.
Below is a picture of one of the corners in my shower where the grout has cracked. Does that area need to be re-grouted or would caulk be sufficient to seal the gap? Thanks!