5-7mm Drainage Gravel

Price: $80.00 / m³


5-7mm Drainage Aggregate, also known as 5-7mm Crushed River Gravel or CRG, is a natural product used for back-filling trenches, around PVC and Ag-Pipe, and for drainage behind retaining walls. As this is a natural construction product, the colour of the rock varies from a light grey, to blue, to brown in colour.

One of the main uses of 5-7mm Drainage Aggregate, is as a drainage layer for Bio-Retention Pits, also commonly known as Rain Gardens.

These products can also be used for a base underneath concrete and can even be blended into concrete mixes due to their high compressive strength.