Known as Non-Descript Crushed Rock NDCR, Road Base, Crushed Rock, 20MM B Grade
NDCR is 20mm to dust crushed bluestone rock. Used as a base under paving and concrete slabs. It is also used for car parks, driveways and pathways.
Ideal for building sites and/or creating a solid base for driveways/footpaths and paved open areas.
Ideal to use as a base under a decorative topping, apply a base of at least 50mm and top with a 30mm skimmer of decorative topping such as Lilydale or Tuscan topping.