Date: 4/19/2008 12:50 am EDT
The potential issue with using the Flexible Grout between the wood and the Avaire tile is the typical shrinkage and expansion that occurs with wood. A caulk is better suited to handle that much movement. Typically, in the dry winter months, the wood will shrink noticably, and expand in the more humid summer months (at least in the midwest climate). I'd be concerned about possible separation at the wood interface if you don't use a caulk. There are sanded caulks available at various home centers that come very close to matching the Avaire Flexible Grout colors.