Can anyone explain why the grout surrounding a brand new kitchen and bath floor (12 x 12 size tiles), would crack in every direction (vertically and horizontally)? Is it the subfloor, or the grout? How will it be repaired?
Had the exact problem in my home (new construction. The builder refused to do anything about the problem-had to sue him. We were told by the independent flooring expert that we hired that the underlayment was inadequate both in material and depth;the mortar used was not mixed with the proper latex additive; the underlayment was improperly affixed to the subfloor (they used staples instead of screws). We had the entire floor removed 600 sq.ft. and replaced. The good news was that it was so poorly installed we did not damage the subfloor when it was torn up. Hope you do not have the same luck that we had with our builder. A reputable builder/installer would have fixed the problem at their expense.