Hi
I will be laying a patio using quarry tiles (currently a lawn) and was wondering what needs to go underneath the tiles? For slabs I have read a hardcore, then sand/cement combination would be suitable but does this also apply to quarry tiles? I have read elsewhere that quarry tiles should be laid on concrete but still haven't found a definite answer.
FYI, my soil is a heavy clay type.
Any advice would be most welcome.
Cheers