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Old 09-18-2012, 10:36 AM   #1
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Tile Installation Over 30 year old Concrete


I would like to install porcelain tile over a 30 year old concrete slab approx 1500 sq' located here in TX.

Do I need to put down DITRA, or can I go right over the slab?

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Old 09-18-2012, 01:45 PM   #2
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Tile Installation Over 30 year old Concrete


if the slab is flat with no cracks you can go right over it. if there are expansion joints you will have to leave expansions in the tile.

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Old 09-18-2012, 01:58 PM   #3
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Tile Installation Over 30 year old Concrete


Danny Thank you for your reply, the slab is crack free without expansion joints. Its a commercial building built in the mid to late 70s. I just ripped up 2 layers of old floor tile, what a work out... my arms are still vibrating. I guess I could have left the old floor down but I like to do the job right.
Again thanks for your reply...
If anyone else would like to comment please do so....
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Old 09-18-2012, 02:45 PM   #4
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Tile Installation Over 30 year old Concrete


if the 1500sq feet is one big room you wil prob need expansion joints in the tile anyway which would be a grout joint with matching caulk instead of grout.
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Old 09-18-2012, 02:47 PM   #5
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Tile Installation Over 30 year old Concrete


So break the room into 1/4s? or more....
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