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Old 02-02-2011, 01:52 PM   #1
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Remodeling my kitchen and dining room. I've finally gotten to the flooring issue.
The entire area is 20' by 21'... one big slab of concrete.
In the kitchen area was original tile from like the 1920's (i think it's vinyl but not 100%)... it was then covered over with 3/4" plywood subfloor then laminate wood planks.

In the dining room is a 1/8" thin sheet of, i'm guessing hardwood board, then topped with carpet.

Separating the rooms was a cinder block wall that was there for looks, then where the laminate and carpet met was an inch step.

Well I took out the cinder block wall and i now see that the concrete is about 1 1/2" high on the carpet side then the wood side... then gradually goes back to level where that 1" step was.

So, the whole thing is not only uneven, but also highly un-level. I was thinking of pouring self leveling cement down but the kitchen concrete from wall to the dining room concrete 21' over is about 3" lower

So, what is my best course of action?

Thanks all!

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Old 02-02-2011, 02:44 PM   #2
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Only if you want to have to redo it again in four to six months, do you lay tile over uneven surfaces. First thing that you will need to do, is find the high and low point, then figure out how you will need to fir it out with firring strips cut from 2x4 stock.

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Old 02-02-2011, 04:01 PM   #3
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Can I install ceramic tile onto an uneven and un-level concrete floor?


If I fir it out, then what would I use over the firring, concrete board or 3/4" plywood?

I'm trying to get away with doing this whole floor for as cheap as possible... i was going to lay 3/4" plywood then laminate over the whole thing again but I just did that in the living room area and want something else in the kitchen/dining area.

Thoughts?
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Old 02-02-2011, 04:41 PM   #4
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Can I install ceramic tile onto an uneven and un-level concrete floor?


You will really have to decide what is best and get it in order before moving forward. That may mean actually bringing in a contractor, and maybe have them do it to get it ready for you to lay the flooring.
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Old 02-02-2011, 06:38 PM   #5
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Can I install ceramic tile onto an uneven and un-level concrete floor?


You CAN NOT use cement board for floor sheathing/subfloor.

Plywood or OSB would be the correct products to use.
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Old 02-02-2011, 06:47 PM   #6
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Can I install ceramic tile onto an uneven and un-level concrete floor?


When you have the floor flattened out---what do you plan to install as the finished covering?
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Old 02-02-2011, 06:59 PM   #7
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Can I install ceramic tile onto an uneven and un-level concrete floor?


i was doing more research on leveling this floor out and am currently thinking of...

Get Quikrete 60 lb. Sand/Topping Mix from Home Depot and just put a whole new layer over the concrete (of course applying the concrete adhesive as well)

Then staining that top coat and sealing.

Will I have to Sand the top concrete mix or is it fine enough not to?
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Old 02-02-2011, 07:14 PM   #8
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Can I install ceramic tile onto an uneven and un-level concrete floor?


We need a concrete guy-----itsreallyconcrete--where are you?
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Old 02-02-2011, 09:29 PM   #9
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Quote:
Get Quikrete 60 lb. Sand/Topping Mix from Home Depot.....
Not the product to use for this purpose, it will likely break up in a week of walking on it.
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Old 02-02-2011, 09:41 PM   #10
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Why is that? Its made to work for less then 2" layer.
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Old 02-02-2011, 09:52 PM   #11
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Can I install ceramic tile onto an uneven and un-level concrete floor?


OK then Go ahead!
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Old 02-02-2011, 10:00 PM   #12
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Why do you suggest it will breakup?
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Old 02-03-2011, 08:31 AM   #13
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Can I install ceramic tile onto an uneven and un-level concrete floor?


A sand mix (brick mortar) Is not designed as a floor surface----it will quickly deteriorate with foot traffic.

Any self leveling compound will also have similar problems--the thin coatings are intended to have a hard wear surface applied on top---like ceramic tile---Mike---
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Old 02-03-2011, 08:44 AM   #14
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Then what type of top coat do I use?
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Old 02-03-2011, 09:02 AM   #15
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Can I install ceramic tile onto an uneven and un-level concrete floor?


Our basement bathroom was similarly very wavy and un-level. 3 bags of self leveling cement and we got it almost perfectly level. Put in the ceramic tile and it looks great. There's still a few places where you can tell it's not 100% perfect but it's held up great for the past 6 months.

So I'd say lots of self leveling concrete before you put that tile in. You have to at least get it close, preferably 100%. The only downside is it won't be cheap in the little bags from HD/Lowes. IIRC they were about $30/bag.

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