Make sure you have good underlay product/sand underneath for suppressing weeds and Iv found that with stone in flowerbeds that it does settle and so a top up was needed.
Its only a decorative path, it won't get much traffic, except maybe the little 'uns running over it occasionally.
I have old stones on it at the minute. Very uneven surface. I spent a few hours the other day digging out the weeds and sprayed weedkiller on it.
I plan to put down that weed control fabric. Was thinking of using the existing stones, rake them out as evenly as I can, put the fabric on top, and then the decorative stone on top of that. To be fair the 150mm was the depth of the path with nothing in it, so with stones and fabric it will be more like 80mm or so of decorative stones.
I do fear the weeds coming back, so any advice above and beyond what I've said to keep them at bay would be appreciated.
hi we dug a deepish area from our kids playground and then lined with with plastic from silage pit (used two layers) and then put a layer of sand over this and then put a layer of good quality weed fabric and then bark. The only place we get weeds is along the deck boards at the very edge. From previous experience of flowerbeds the clay underneath rots the black fabric and weeds def come through (plus some self seeded plants so balances it out). I remember reading if u leave the clay exposed for a good long period of time you can eventually end up with a weed free clay as you remove the weeds fully as they grow.