Stu Pidassle wrote:
Hi,
We are preparing to spruce up our laundry room. The room has a tile
floor with several areas where the grout has broken up. My assumption
is that this is due to the vibration from the washing machine and that
the issue will re-occur if I simply repair the situation with standard
grout. Even though the best approach would be to remove the tile and
replace it with something else, we would like to avoid taking on the
mess and effort of this approach. Can anyone recommend a type of
grout that would be suitable for use on floor tiles, that would flex
enough for use in a laundry room?

Would this do?
http://www.ardex.com/prod-fl-inst.htm