Victorian tile path - Do i need hardcore and sand?

[conan]

I'm laying a new victorian tile path 1.5 x 1.5m.

The existing base has been in situ since the 1890's. Having taken up the existing base which was cracked do I need to lay a hardcore, sand and concrete base or could I get away with just a 100mm slab direct on existing soil? No heavy loads only light foot traffic!!

Any suggestions/advice would be appreciated!

[Tony McC]

If the sub-grade is OK, you could lay a 75-100mm thick concrete slab and then use an exterior grade tile adhesive to re-lay the tiles. Use a sub-base if the sub-grade needs regulating, and ensure you use a damp-proof membrane beneath the concrete, as shown on the main website.

[conan]

Cheers Tony!! Looked at the task at hand again last night! I may need to excavate a few inches to ensure that I get at least a 75mm concrete slab - the last slab was only 30mm deep and does appear to be laid on a sub-base. Would I still get away without the sub-base if carefully exacavate a few inches or would you still recommend a sub-base. Light foot traffic only?
Appreciate the help!!!

[Tony McC]

I'd only use a sub-base if levels warranted it or if there was a problem with the sub-grade. No point in making extra work for yourself!