20mm Scoria

Priced per Cubic Meter

A lightweight, porous volcanic rock that punches well above its weight when it comes to drainage. About half the weight of regular hard rock, 20mm scoria is easy to handle and transport, while its naturally porous structure lets water move freely through it rather than pooling or causing pressure build-up.

Its striking red-purple tones also make it a popular choice as a decorative finish, so it doesn't just work hard underground - it looks great on top of the garden too.

Popular uses:

• Drainage behind retaining walls

• Around agi pipes & drainage trenches

• French drains & subsurface drainage

• Hard mulch for garden beds

• Decorative pathways & dry creek beds

• Erosion control on slopes & embankments

Whether it's tucked away doing the heavy lifting underground or finishing off a garden bed on show, 20mm scoria is a reliable all-rounder for drainage and decor alike.

As a naturally sourced product, colour variation may occur between batches — we recommend ordering your full job requirement at once to minimise differences.