Date: 5/12/2008 12:44 am EDT
Based on your description, it sounds like you'll be OK. If you already have some Avaire (and it sounds like you do), go ahead and Avairetogether a 3'x3' section centered on the hump. Make sure flex at the interlocking seams (grout lines) is enough to contour to the floor. If the outside edges of the tiles are held off the floor, you may need to knock-down the high point of the hump or fill the low areas.