tile floor

I have a sealed concrete floor can I just screw the backer board to the concrete? Then just tile like usual.

As far as I know you cant tile on sealed concrete. The last time I faced a similar situation, I used a belt sander on the floor to scour the concrete. Then when it was dull we acid washed it. If you use this method be sure to get all the acid off the floor before attempting to tile! Mop it down 2-3 more times with clean water, and let it dry for a day or too. The other guys on here know thier stuff, maybe they can give us both advice!

Ceramic tile should not be installed over sealed concrete. The surface must be mechanically abraided prior to making any tile installation. Chemical strippers are specifically excluded. No typical acid readily available to the general public will have an effect on the sealer. Mechanical removal is the only way. Grind, sandblast, shotblast, etc.

Bud do you think a belt sanded is sufficent?

Can I just do it the easy way and not have to strip anything? Just take the cement backer board for tile and screw it down to the concrete

Bud do you think a belt sanded is sufficent?

I've never seen a beltsander work for this to any great degree but I suppose it isn't impossible.

Can I just do it the easy way and not have to strip anything? Just take the cement backer board for tile and screw it down to the concrete

Sorry - NO! It doesn't work that way.

If I strip the sealer or sand or grind it do I still have to have a backerboard or can I tile right over the concrete

Right over the concrete.

Thanks Bud. I remeber years ago when I worked for big shops we used to blast track. I tried the sander trick a few years back and didnt have any complaits. Ill keep my fingers crossed!

Hey everbody, he wants to screw down backer board first. So long as he puts that down, then tiles over the B. B. It will work. duh

Cement mason, stick to building forms. You cant screw backer board to a concrete floor. Duh!