Stonemarket millstone flags's for driveway? - What sub-base?

[brunop]

I would like to lay a drive using Sonemarket's Millstone Flags. Now I know they are not made with drives in mind but they are fairly thick at 45mm.

What sub-base would you recommend? So far I have dug out about 150mm, maybe a little over, is this enough?

What should I use, compacted dtp1 or a concrete slab?

Is there anyone who has had experience laying these on a drive?

Thanks in advance.

Bruno

[Mark B]

i would lay them on 100-150 mm of type one then a full bed of semidry concrete mix, the full bed for them should dtop them from breaking etc. others can confirm etc...

[brunop]

Thanks for your answer Mark, much appreciated.

For the semi-dry mix would you recommend a coarse mix (i.e. 6 Small Gravel, 4 Grit sand and 1 cement)?

Or just a mix of Grit sand and cement? (10 grit sand, 1 cement)

Thanks again,

Bruno