What causes tiny grout cracks in fairly new shower stall?
We are going to regrout those areas, but are hoping to avoid it happening again. We were wondering if it is likely happening because of shifting or if there was something wrong with the grout?
This reno was done by a family member. Although now retired, he was a building contractor for 30+ years and has done many reno projects for us with great results so I'm not thinking that it was necessarily something that was done wrong. We just want to try to prevent it from continuing. He's away for a few weeks or would ask him.
Thanks for any advice!