Basically here's the deal, the grout between my tiles are starting to crack. It is happening inside the shower and outside as well. The tiles themselves are fine. The tiles are maybe 8x10. The guy who lived here before tried to fix things up, and he messed up a few things. My question is did he mess something up or are the cracks in the grout just from settling. I've done basic tile work on the floor ,making a bar , etc. Just wondering if i need to scrape out & regrout the joints then seal them or do I need professional help. I'll try to post some pics tommorrow, I live in Hunterton Cty NJ, so if anyone around pm please. TY.