RicodJour wrote:
On Apr 28, 11:16 pm, JIMMIE wrote:
I want to tile my back porch with some large glazed terra cotta
tiles. The fllor is concrete but it has a few cracks in it. The
edges of the cracks are level and seem to be stable. How can I make
sure the tiles dont crack. I was thinking over covering th efloor
in backer board and let that float on the concrete and put the tile
on top of that. The porch is not covered, I guess you would call it
a patio 14X28 ft.

Use a crack isolation membrane.
http://www.google.com/webhp?hl=en#hl...isolation+tile

Such as Schluter DITRA.