Tiles on Pebblecrete

[MickB]

Our rear patio is exposed pebblecrete finish on the slab.
I want to install tiles on top of this slab. Can I lay the tiles directly onto the rough surface(pebbles) or do I need to get the surface ground back to a smooth surface?

[Honorary Bloke]

Our rear patio is exposed pebblecrete finish on the slab.
I want to install tiles on top of this slab. Can I lay the tiles directly onto the rough surface(pebbles) or do I need to get the surface ground back to a smooth surface?

No. Easier to render it flat than grind it I would guess. But it needs to be flat. :)

[Dirty Doogie]

I have used a MAPEI tile glue over pebblecrete. The tiles have been down for 4 years in sun and rain and no tiles have come loose. The glue is expensive though.

Doog