I am going to be tiling our kitchen with 12" ceramics. People have told me that they hear of a lot of tile cracking on joisted floors especially ranch homes. My home is constructed of 2x10 16"OC all cross braced with the longest span being 11 feet with doubled up 1/2" plywood flooring. Half of the kitchen is over crosswalls from the furnace room and family rooms below. The refrigerator sits directly over one of these so I'm not concerned with the weight of the refrigerator. Should I be concerned with cracking. When jumping I see no noticable flexing and the floor fells solid.
Appriate any input. THanks