Easiest was to level a exterior patio slab for tiling

[White Room]

How thick is the concrete slab....

 

[stone tiler]

Yeah thats what I'm thinking. Is it really worth the grief if/when it goes wrong. Could cost me a few quid in the long run and you know even though he says yeah go with it, I want hold you responsible if it went wrong my phone wouldn't stop ringing.

I can't grind that much off the screed either to get the falls - it'd take forever!

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I think he said 6 inch but not 100%