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Unread 04-22-2005, 01:31 PM   #1
firsttry
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Question concrete floor expansion joints

I am tiling our concrete floor and will need to tile over one of the expansion joints. The joint is just an indentation in the floor where slabs meet, no material in it. What do I need to do to tile over it? Thanks, Jen
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Unread 04-22-2005, 02:09 PM   #2
Mike2
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Jen, as the old saying goes, you must 'honor that joint". The floor tile should not bridge it. Lay out the tile such that there is a space aligned over the slab joint but caulk that tile space instead of using grout. Or alternatively use one of the Dilex movement joint profiles made by Schluter Click here
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Unread 04-22-2005, 03:17 PM   #3
Rd Tile
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You said indentation, where the slabs meet, is this 2 slabs or just a control joint placed there, does this joint go all the way down seperating the 2 slabs or just a line in one slab?
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Unread 04-22-2005, 04:32 PM   #4
firsttry
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I'm not sure as only part is exposed, but it seems to go all the way across the foundation slab (please forgive me if I get my terms incorrect) Jen
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Unread 04-23-2005, 07:50 AM   #5
bbcamp
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Sounds like a control joint. You treat them just like expansion joints. You can do like Mike said (either method) or you can use an antifracture membrane so you can set your tile across the joints. This method several several soft joints (groutlines filled with a caulk), so keep that in mind if you want to go that route.
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