7mm aggregate is a lightweight, porous material often made from blue metal stone, used primarily for drainage. **Uses:** - **Pipe Bedding:** Stabilizes plumbing pipes and ensures proper water flow. - **Backfilling Trenches:** Prevents waterlogging and aids in drainage for underground installations. - **Garden Beds:** Enhances soil aeration, promotes root growth, and allows excess water to drain. Its versatility makes 7mm aggregate essential for various drainage applications.
