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cracking outdoor porcelain
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Ernest46
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Joined: August 2008
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Posted: October 7, 2008 12:56 AM

Several of my procelain tiles on my outside deck are cracking. What would be causing this?
MichaelPrachniak
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Joined: July 2008
Posts: 386
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Orlando, FL
Posted: October 7, 2008 11:05 PM

RE: cracking outdoor porcelain
What type of subfloor do you have? If concrete, than you likely have a slab crack that is transferring to your tile. 
Michael Prachniak - Expert Tile and Stone Consultant and Writer, Owner - Tile Productions
 
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Ernest46
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Joined: August 2008
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Posted: October 9, 2008 2:55 AM

RE: cracking outdoor porcelain
I have them on a concrete slab, but it wasn't cracked when I laid the tile on there.  It may have cracked now, but the tiles are cracked in several different areas, so my concrete would have to have many crack as well, right?  I wouldn't think that it is likely as there were no cracks when I laid the tile about two years ago. Any advice is appreciated!
MichaelPrachniak
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Joined: July 2008
Posts: 386
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Orlando, FL
Posted: October 9, 2008 10:06 PM

RE: cracking outdoor porcelain
Was the slab fairly new when you put the tiles down? I am assuming that a crack isolation membrane was not used. It is always recommended when tiling over concrete slabs as slab cracks can happen at any time. You mentioned that the tiles are cracked in several different areas. It is possible to have several slab cracks develop. Normally, though, with slab cracks transferring to tile, you can see the progression of the crack across the tiles. Sometimes, however, some tiles crack while others don't. That is because the bond has been broken between the tile and the slab before the tile had a chance to crack. You can tell by knocking on the tiles. If it sounds hollow, the bond has been broken, but your tile has been spared of a crack.
Michael Prachniak - Expert Tile and Stone Consultant and Writer, Owner - Tile Productions
 
Check out FAF''s tile section!
www.findanyfloor.com/tile/TileFloo...
LonnieGarvey
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Joined: September 2016
Posts: 6
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Redding, CA
Posted: September 16, 2016 8:11 AM

RE: cracking outdoor porcelain
Hi, thank you for the question, I completely agree with Michael for his analysis and reliable solution. I think firstly it should be analysed for proper implementations. Good luck!
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