Tiling on poured concrete

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Old 02-03-10, 10:04 AM
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Tiling on poured concrete

Hello and thanks in advance for any info.

We're planning on converting the garage and ground floor landing/hallway of our single family into living space. Want to go with ceramic tile. My question is, since the garage floor and landing/hallway are all the same level of poured concrete, can we simply grout and tile right on the concrete?

Thanks. AW
 
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Old 02-03-10, 11:15 AM
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Maybe

Whats the condition of the concrete slab? Has it been sealed or painted? Any grease, gas or oil stains? Any cracks? How large of an area? Are there any expansion joints or control joints? Is the floor flat or does it have dips and high spots?
 
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Old 02-03-10, 08:30 PM
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Thanks.

Slab appears to be in good shape with no cracks. No oil/grease in the garage and it was never sealed or painted. The garage is 15 x 30 and we wanted to continue the tile into the hallway and spare room. I don't see any expansion joints in the garage and didn't see any when we ripped up the original carpet and had the new stuff installed. Thanks again.
 
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Old 02-04-10, 01:38 PM
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You should be ok to go then. Use a good quality modified thinset to install the tile. No premixed stuff in a bucket, and no mastic. You'll need to incorporate at least one movement joint for the 30' dimension. This is simply a caulked joint (instead of grout) that will allow for expansion/contraction. Caulks color matched to grouts are available.
 
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