decorative-pebbles-stones-rocks-scoria-28mm-0E1A3478

Scoria

Volume Calculator

Use our simple calculator to work out exactly how much mulch, soil, sand, pebbles or any of our bulk loads you will need.

Use our chart to work out the depth you will need.

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Add an additional garden area to the total volume

Suggested Depths

  • Mulch
  • New mulch — 10cm
  • Topping up — 7cm
  • Soil
  • New garden bed — 20cm
  • Topping up — 5cm
  • Aggregate
  • Foot traffic — 7cm
  • Light vehicles — 10cm
  • Heavy vehicles — 15cm
Volume Calculator

A light weight aggregate, an igneous rock which is best described as basalt rock with lots of air bubbles making it very light.

Best Suited For: Backing retaining walls, filling planter boxes, aquaculture tanks and also on gardens instead of bark or mulch.