Type 3 Sub Base

Product Description

Type 3 Sub-Base is a high-quality, open-graded crushed aggregate designed specifically for applications where excellent drainage and structural stability are required. Unlike finer sub-base materials, Type 3 contains little to no fines, allowing water to pass freely through the layer and preventing water retention within the pavement structure. This makes Type 3 Sub-Base ideal for use in SuDS-compliant developments, permeable pavements, and areas prone to standing water. It provides a strong, free-draining foundation that reduces the risk of frost damage, settlement, and surface failure over time. Key Features Open-graded aggregate with minimal fines Excellent drainage performance High load-bearing capability when compacted Helps prevent water pooling and frost heave Compliant with UK highway and civil engineering standards Typical Applications Permeable paving systems Car parks and driveways Roads and access tracks Hardstandings and yards Foundations requiring drainage control Type 3 Sub-Base is commonly used as a lower sub-base layer, often beneath permeable surface courses or alongside geotextile membranes, ensuring long-term performance in both commercial and residential construction projects.

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