I Did That

There is an area of the floor tile that is starting to pop loose.  It is unfortunately in a very heavy traffic area very near the back door and dining room door in the kitchen.  I’m not entirely sure what the problem is, but my initial guess is that the mortar was either spread too thin or was too wet/dry at that point.  It is near the area that I stopped for the day at one point, so I’m leaning towards the dry mortar explanation.

What I will do to resolve the problem is pick a square area that encompasses all of the popped tile (I think there are five of them) and remove all of the tile in that area and scrape away the dried mortar and grout.  I will then relay that entire area and regrout it.  That should take care of it.

It is entirely possible (but not likely) that there is a problem with the floor at that point that allows the tile to flex too much, but I never noticed much deflection when walking across it previously, so I doubt it.  Once the tile is up and everything is scraped away, I will examine it closely to make sure.