HELP! latex this crap floor or grind it down? - Tile Advice

[Chrisdec]

Hi all, I've got a porch/bathroom to tile. My contractor says to tile straight onto the concrete foundation but its a bloody mess. What prep should I do here? Latex over it all with self leveler ( Ardex na ) or should I use hardiebacker or somthing.

 

[Ajax123]

Smoothing compound. Grinding would be a nightmare

 

[Chrisdec]

Smoothing compound. Grinding would be a nightmare

Would ardex na work?

 

[Ajax123]

That's a question to ask Ardex.