gcol ! want to lay ceramics out door on concrete slab.

[mattysupra]

What should i use to lay ceramics out door? o and grout?

 

[Jasonb]

First make sure they are frost proof, you will be better off with porcelain but still make sure its frost proof.

Use a powdered adhesive and grout that are both suitable for external use such as BAL Rapidset & BAL wide joint grout.

You will need to use a tickbed solidbed trowel (large half round notches) as you don't want any voids under the tiles.

Jason

 

[gcol]

As Jason said, go for a Porcelain tile and use 10mm Radius U-notched trowel. BAL stuff is good tackle but very expensive so I only use their stuff when tiling onto wood. For tiling onto concrete you don't need anything special. I always recommend Feb fastset floor and wall tile adhesive and PCI fast track grey grout . Both can be used outside and are pretty cheap:
Adhesive: http://www.cwberry.com/Inquiry_ProductDetails.aspx?ItemNumber=04054505
Grout: http://www.pci.uk.com/product_fasttrack_grey.asp

 

[mattysupra]

cheers guys.

 

[Moz]

as jase said
the trowel needs to be a solid bed one , meaning the mud/adhesive Is NOT rippled/bevelled at all as you imaging normal tiling is , ok ...
if you get air pockets outside the frost gets in an *blows* the tiles ....
see here for a look at a trowel
http://www.tools4tilers.co.uk/product.php?xProd=33&xSec=1
hope this helps