Aggregate Drainage Gravel 20mm

Aggregate Drainage Gravel 20mm is a coarse granular material used where the project calls for durable stone and suitable drainage or fill performance.

Uses on a job site

• Drainage trenches and aggregate around suitable drainage pipe.
• Drainage backfill behind retaining structures where the design specifies it.
• Site drainage layers and landscape drainage works using the nominated grading.

Material properties

• Nominal 20mm size; check the current grading for specification work.
• Spaces between particles allow water movement when fines content is suitably controlled.
• Hard rock aggregate with natural variation in colour and shape.

Before you order

Use filter fabric and pipe protection where specified. Confirm grading, fines content and suitability for the drainage system or engineering design.