Advice on prep for stone patio

[Ollie02948]

I'm soon to be laying some classic grey limestone random lengths in my garden . Just wondering on the best prep for it? It's currently just grass at the moment. Area to be tiled is approx 30sqm. I've never done any external tiling before so I was thinking of laying a concrete slab then tiling when the screed is completely dry? What's the best way about it? Cheers ollie

 

[TT Tiling]

hi yes a good thick concrete slab first then just as you said wait till dry then SBR it ,use 1 part flex add flex grout happy days

 

[Ollie02948]

That's great cheers. Would you use ditra or something similar?

 

[TT Tiling]

no not out side

 

[AliGage]

No?

 

[White Room]

I'd be putting a ditra down with the stone, there's more chance of an external concrete slab cracking...

 

[AliGage]

Crack suppression
Waterproofing
Vapour barrier
Load baring qualities

Quite a few benefits to ditra in this scenario

 

[Spud]

You don't need a concrete base if you dig it out and use type one .wack it down with a wacker plate and you can then fit the stone on a mortar bed

 

[widler]

I. With gary, it's. Tad daft putting a waterproof membrane on a external patio, they need drainage