Scoria is a volcanic stone which is both light and strong. Scoria comes in different colours but we source a richer red scoria which makes it suitable for landscaping as well as the obvious drainage uses it has. When using in a drainage environment we recommend you use SAP7 scoria under your drainage coil and the 25/7 around and above the pipe. The 25/7 scoria is also very good as a drainage chip behind retaining walls.
- Grading: 7-25mm