Question On Black Floor Adhesive

[Carts69]

Hi, I have just removed cork tiles from my concrete kitchen floor, I'm now left with a black tar like adhesive, even though this is applied thinly, it's a total nightmare to remove, I aim to tile this area with ceramic tiles, now I've heard that a slurry application is the way forward, my question is...can I slurry straight over this black adhesive or do I need to scrape away & get most of it off?

 

[Dave]

Slurry over if stuck like poo

 

[StevieBoy]

Prime with SBR, then tile.

 

[Old Mod]

As @Dave above!

 

[Carts69]

Excellent, slurry it is then! Cheers

 

[Carts69]

Another question guys... What trowel & what thickness of adhesive for 450 X 450 tiles please?

 

[AliGage]

Another question guys... What trowel & what thickness of adhesive for 450 X 450 tiles please?

Whats the floor like for flatness?

Back butter the tiles and a 10mm square notch would probably be my choice. It usually is, lol

 

[Carts69]

The floor is pretty flat, although one end of the kitchen has a crack running across the floor, around 500 long, the other side of the crack is around 300 wide, this area has lifted a little, I have a rock on the spirit level.
The area is still solid, I'm just wondering if this could be my starting point, making up differences in slight levels with the adhesive?

 

[AliGage]

300 wide? You sure?

 

[Carts69]

The crack stretches 800 long X 300