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-   -   Ceramic Tile over painted basement floor (http://www.diychatroom.com/f84/ceramic-tile-over-painted-basement-floor-70298/)

Wildie 05-01-2010 02:07 PM

Ceramic Tile over painted basement floor
 
My older house has low ceilings in the basement! (6'7") and I would like to finish the floor with ceramic tile.
At some time, in the past the floor was painted. With what type of paint, I have no idea? There is no chipping or flaking!

My question is will the tile adhesive bond to this surface? Or will it come loose?

oh'mike 05-01-2010 07:40 PM

You said that the paint is in good shape and showing no signs of failure--

If the paint is holding well--I say go ahead--For good measure use the best thinset available.
For this I suggest using unmodified powder with liquid latex.

You would probably be fine using modified thinset,but for the little extra cost I would feel safer with the liquid latex added.---Mike--

Wildie 05-01-2010 10:44 PM

Quote:

Originally Posted by oh'mike (Post 436324)
You said that the paint is in good shape and showing no signs of failure--

If the paint is holding well--I say go ahead--For good measure use the best thinset available.
For this I suggest using unmodified powder with liquid latex.

You would probably be fine using modified thinset,but for the little extra cost I would feel safer with the liquid latex added.---Mike--

Thanks for the quick reply, Mike! This paint appears to be quite old, but is well bonded to the concrete.
Rather forming a coat, it appears to be melded into the concrete!
Are there paints for concrete that attaches to concrete, in same manner as mortar does?

oh'mike 05-02-2010 06:04 AM

Floor paints and why some hold up and others fail is a mystery to me-----

I think the condition of the concrete --before the paint goes on--- has every thing to do with the success.

I've had two part epoxy peel off --and $10.00 Wallmart porch paint remain perfect for 15 years--:laughing:

It's a mystery-------------Mike-----

Bud Cline 05-02-2010 03:14 PM

Be aware that the tile installation industry STRONGLY DISCOURAGES installing ceramic tile over a painted concrete substrate. Painted surfaces are known bond-breakers when it comes to ceramic tile installations - doesn't matter how you cook the thinset.
Coatings should be removed by mechanical means, no chemicals. Shot-blasting, sandblasting, and grinding are the methods used.:)

Wildie 05-02-2010 10:28 PM

Quote:

Originally Posted by Bud Cline (Post 436646)
Be aware that the tile installation industry STRONGLY DISCOURAGES installing ceramic tile over a painted concrete substrate. Painted surfaces are known bond-breakers when it comes to ceramic tile installations - doesn't matter how you cook the thinset.
Coatings should be removed by mechanical means, no chemicals. Shot-blasting, sandblasting, and grinding are the methods used.:)

Yes, this is/was my concern! Trying to clear the paint off isn't going to happen!
I'm thinking of using DELL dimpled underlay, topped with laminate!
I considered tile in case of flooding, that was the only reason!

Bud Cline 05-02-2010 10:51 PM

Just sayin'!

Wildie 05-03-2010 04:50 PM

Quote:

Originally Posted by Bud Cline (Post 436837)
Just sayin'!

:wink:


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