Looking to tile a basement floor that has been previously painted. Not sure what kind of paint. They will be using a porclein tile. Any suggestions on type of thinset? Thanks>
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Depends very much on how well the paint is bonded to the floor. The best adhesive in the world won't penetrate the paint, and the tiles may come up easily if the paint decides to peel.
Paint seems to be well adhered to the floor, but does have some areas that the paint has been worn off.
Shotblasting.
And I'm worried about putting Ditra thinset to a sealed brick floor. Paint would have me pulling the few hairs left out of my head. No way would I thinset right over that..but thats just me. If it were me in an area that large I'd rent a scarrifer (sp?) to get the paint up. USe lots of fans and dust masks.
http://constructioncomplete.com/Catalog/Scarifiers?leadsource=CAM100IND&gclid=CMaDzp7bypkCFSVM5QodoRb7tg
http://www.cliffordrenovations.com
http://www.ramdass.org
Edited 3/30/2009 9:03 am ET by andybuildz
Unless the concrete is old, we install an isolation barrier anyway. If the concrete is old, its probably not moving or cracking anymore. But newer concrete might eventually crack, and that will telegraph right through the tile, if there is no barrier. My tile man glues down a heavy building felt, then tiles on top of that.
"...craftsmanship is first & foremost an expression of the human spirit." - P. Korn
bakersfieldremodel.com
I agree with the others who have suggested renting a shotblaster or a scarifier. The paint needs to be removed by abrasion, to expose the porous concrete underneath, for a reliable bond. I use Laticrete's 254 thinset when I have a problem surface to bond to.
Best of luck,
Shaughnn
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