Nambucca Stone (20mm) - Pre Bagged 20kg

Our Nambucca Stone (20mm) is supplied in easy-to-transport 20kg bags. They are packaged in thick plastic bags that can hold the weight of the stones and are long-lasting if you need to store the bags before completing your project.

For the 20kg bag of Nambucca Stone (20mm), allowing for approximately 70 bags to cover a cubic metre (1m³).

If you need help calculating your measurements, try the m³ calculators in our measurement guide or call our friendly team on (07) 3245 5677.

To calculate how many bags of Nambucca Stone (20mm) you'll need, first work out the volume of your project using the following formula:

Length (m) × Width (m) × Depth (m) = Cubic Metres (m³)

Once you have your cubic metre measurement, multiply it by 70 to estimate the number of 20kg bags required.

For example: 0.5m³ × 70 = 35 bags

This calculation is based on 20kg bags only.

We recommend laying Nambucca Stone (20mm) at a depth of 40–50mm for general garden applications such as pathways, garden beds, borders, and low-traffic areas.

For driveways or areas with higher foot traffic, we recommend a depth of approximately 50–60mm to help prevent shifting and provide greater coverage.

No. Nambucca Stone (20mm) is supplied by the manufacturer in bagged form only and is not available in bulk.

The supplier does not send these stones out in bulk quantities, so your only option is to purchase them by the bag. If you need help calculating how many bags you need, check the FAQs above or call our friendly team on (07) 3245 5677.