Our 20mm Scoria is a lightweight, free-draining aggregate screened to remove fine particles, creating a clean and consistent grading ideal for a range of drainage applications. Its larger particle size provides greater void space than finer aggregates, allowing water to move quickly and efficiently through the material.
Commonly used behind retaining walls, in drainage trenches, around agricultural and stormwater systems, and beneath landscaping projects, 20mm Scoria helps manage water movement while reducing hydrostatic pressure build-up. Its lightweight nature also makes it easier to handle and transport compared to many traditional drainage aggregates. The distinctive red-brown volcanic appearance adds an attractive natural finish where the material remains visible.
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Our 20mm Scoria is a lightweight, free-draining aggregate screened to remove fine particles, creating a clean and consistent grading ideal for a range of drainage applications. Its larger particle size provides greater void space than finer aggregates, allowing water to move quickly and efficiently through the material.
Commonly used behind retaining walls, in drainage trenches, around agricultural and stormwater systems, and beneath landscaping projects, 20mm Scoria helps manage water movement while reducing hydrostatic pressure build-up. Its lightweight nature also makes it easier to handle and transport compared to many traditional drainage aggregates. The distinctive red-brown volcanic appearance adds an attractive natural finish where the material remains visible.
Disclaimer:
Whether you're building a new garden, refreshing your outdoor space, or tackling a major landscaping project, we've got the materials you need to get the job done. From premium mulches and quality soils to sands, gravels, decorative stones, and crushed rock, our landscaping range is designed to help create lasting results.
No matter the size of your project, our team can help you choose the right products for the task. Visit our Drysdale store to explore the range in person, or contact us for advice on selecting the perfect materials for your next outdoor project.