Thanks for your fantastic question. Edging is a very important aspect of Natural Paving installation system. The minimum edging we recommend is 100 x 25 rough sawn H4 treated pine for Clutha-garden grade, and 100 x 75 rough sawn H4 treated pine posts for Waiau-Car grade. It is a more substantial lump of wood because cars … Continue reading Which edging should I use for my driveway?