Hi all, currently i have paving slabs in two lines running the full length of my drive with grass on both sides of the slabs and grass down the centre of the two lines of slabs, i am going to remove the slabs and dig out the drive area to a depth of six inches in preporation for a gravel drive, what i want to know is, is it best to put weed control material down before the sub base and what is the best sub base to lay before the gravel and should i put edging curbs down the edge of the grass. all advise would be greatfull