Aggregate Base Course (3″ To 4″, Basalt)

Aggregate Base Course (Basalt) - 3” to 4”

Aggregate Base Course in a 3" to 4" size range, made from durable basalt, is a robust construction material ideal for foundational support. Basalt, a dense volcanic rock, is crushed and screened to produce angular aggregate pieces that interlock effectively, providing superior load-bearing capacity and stability.




The larger 3" to 4" size is particularly suited for heavy-duty applications where maximum strength and drainage are required. This size allows for excellent water flow, reducing the risk of pooling and frost heave, while the angular basalt ensures the base remains stable under significant weight. Common uses include road and highway sub-bases, large parking lots, industrial yards, and heavy equipment pads. While its size and angularity make it less suitable for surface finishing or compacted top layers, it excels as a foundational layer where strength and drainage are priorities.