Date: 3/16/2008 5:43 pm EDT
It is usually best to build-up the area under the cabinets to the same height as the tile. It helps with under-cabinet applicances such as dishwashers or trash compactors. You could even put the tile under the cabinets (but that would be more expensive per sf). The Avaire tiles are roughly 14 mm thick (slightly under 9/16 of an inch). Make sure your OSB is flat before you install Avaire - you can knock-down any high spots or seams with a sander.
Congrats on the new (old) home! Send us pictures when you are done (both the interior and exterior).