outside tile work - Tile Advice

[mlh2802]

Hi guys and girls, I'm about to tile the back wall in split faced tiles with no grout. Just a bit worried as its outside and will get wet. Is there a danger that water could get behind the tiles and if it freezes will blow the tile off ? Is there a sealer I could use and if so what do you recommend.
Thanks in advance
Mark

 

[Bond]

Concrete coping or similar with a decent projection at wall head. To seal tiles, you could bed And joint around the tiles with a colour matched adhesive/sealant , something like sikaflex. You may also have to consider moisture penetrating the wall from ground/soil .