Drainage Scoria volcanic rock for drainage and landscaping
Close-up of maroon and black Drainage Scoria
Drainage Scoria volcanic rock for drainage and landscaping
Close-up of maroon and black Drainage Scoria

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Drainage Scoria

Price range: $10.00 through $88.00

Lightweight maroon and black volcanic scoria for drainage, plumbing, retaining walls and landscaping. Available in multiple grades, Drainage Scoria is easy to handle, free-draining, and suitable for use around pipes, behind retaining walls, in garden areas, and as a decorative landscape material.

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Description

Lightweight Scoria for Drainage and Landscaping

Drainage Scoria is a lightweight volcanic rock used where reliable drainage and reduced load are important. Its porous structure allows water to move through easily, making it suitable for plumbing and drainage work, laying around pipes, backfilling retaining walls, and landscape areas where water movement matters.

Naturally maroon and black in colour, scoria also works well as a decorative landscape material. It can be used in garden beds, around outdoor areas, or as an organic-looking mulch alternative where drainage is still required.

Available in multiple grades, this product gives gardeners, landscapers, plumbers, builders and civil contractors a practical material for drainage, backfilling and landscape applications.

Why Use Drainage Scoria?

Drainage Scoria is valued because it is lightweight, easy to work with, and naturally free-draining. This makes it especially useful behind retaining walls, under and around pipes, and in areas where excess water needs to move away without adding unnecessary weight.

Unlike heavier aggregates, scoria is easier to handle on site while still providing strong drainage performance for residential, commercial and landscape projects.

natural volcanic 14-20mm drainage scoria used in a garden

Key benefits

  • Lightweight volcanic rock
  • Free-draining and easy to handle
  • Suitable for plumbing and drainage applications
  • Commonly used under pipes and around services
  • Suitable for backfilling retaining walls
  • Available in multiple grades

Ideal Applications

  • Plumbing and drainage work
  • Around and under pipes
  • Backfilling retaining walls
  • Garden drainage
  • Decorative landscaping
  • Around services
  • Residential landscaping
  • Commercial landscape projects

Product Specifications

Material: Natural volcanic scoria
Colour: Maroon and black
Available Grades: 7mm, 10–14mm
Sold by: 20L bag and cubic metre options
Product Note: Scoria is a natural product, so colour, shape, size and texture may vary from photos and between batches.

Available Grades

7mm Scoria
Suited to lighter drainage work, garden areas, decorative applications, and smaller spaces where a finer scoria is preferred.

10–14mm Scoria
A practical all-round drainage grade for plumbing, under pipes, around services, retaining walls and general landscaping.