Tiling a wall in the garden

[BazzaS]

She who must be obeyed has decreed that one of our outside wall panels (currently cement rendered & sound) should be tiled with broken tile pieces to create a random mosaic.
Can anyone advise whether there's any special adhesive and grout needed for this enterprise ?
Has anyone out there ever embarked on such an adventure and do you have any tips (not doing it is not an option !).

Thanks
Bazza

 

[markf]

If tiling outside you will need to get a good quality waterproof tile adhesive and completely waterproof grout. Bal do a good range and you can pick it up at various tile wholesalers - Topps Tiles is one that I use.

Make sure the wall is clear of damp and loose debris before you start and make sure you have a good supply of broken tiles to hand.

Can't imagine what it will look like though