Stone skirting

[samwich]

Hi, i've just tiled my friend's kitchen walls. She wants thicker rectangular tumbled marble tiles to go over the bottom ones to act as skirting. I wondered if you know whether Hard as Nails any good to attach or whether I need to score tiles where stone tile skirting will be and use tile adhesive on them?many thanks.

[whitebeam]

Use spf or sure gripfil will do, Never used the tube stuff myself personally