New house, new tile floor and grout is cracking?
We built a new home and moved in about 4 months ago. I recently noticed a hairline crack in the grout in the master bathroom. We have 1.5 inch hex tile throughout the bathrrom and the crack is about 16 to 18 inches long.
I was wondering if this is due to our foundation cracking.
Is this a sign of more cracks to come? Should this be repaired and if so how does one repair this?
Also, when the tile installer grouted the floor he did not put enough grout between the tiles. When you walked on it your toes were pinched between the tiles. Our contractor added another layer of grout. Did the second layer of grout permanently bond with the first layer? We are worried the second layer will eventually come up.
Thank you for any advice.