Author: The Avaire Team
Date: 9/16/2008 10:29 pm EDT
Without seeing your floor first-hand, it is difficult to say with certainty whether or not there is too much movement. However, based on your description, I think you'll be OK. The flexible grout is designed to handle some degree of movement, but too much could cause cracking over time. In our Robinson testing, we see well over 1/16th movement, but the grout handles the movement well.
If you have the option to "unzip" the floor and fill any low areas with a self-leveling compound before you grout, that would be ideal. However, even on a perfectly level floor, there is some compression of the "grid" that will result in some movement (perhaps that is what you are seeing - is the movement only when you place full weight on the area, or does it move even with light pressure?)
There can are some room configurations where you simply cannot avoid narrow "fingers" around the edges. In some cases, we've seen people literally cut the tile at that point and adhere the small piece to the floor, using grout to fill the gap between.
Sorry, but we don't sell any matching touch-up kits (we'll add that to the product development list though - thanks for the suggestion!).
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