Posted: 17/09/2015 at 21:18
I don't really understand membrane - you need to put a deep amount of gravel in order it not to lift up and show, but if you use that much gravel you don't need a membrane.
My neighbour and I both coincidentally redid a gravel area at the same time last month. I didn't use membrane, they did.
Their membrane is showing, I have weeds.