I posted once about this but did not realize at the time that it would be an annual event. Every year on the the coldest day of the year the ceramic tiles on my kitchen floor pop off with a rather loud band, Judging from the left over tiles, it was an annual affair for the previous homeowner also. How do I fix it? Last year I stuck the tiles back down but did not fill with grout. I figured if it was contraction, no grout would give it lots of room to shrink. But...my wife wants grout.
How do you build an expansion joint into a tile floor?