Aggregate Base Course (1.5″ To 2.5″, Penndot, Subbase)

Aggregate Base Course, Penndot Subbase, 1.5” to 2.5”

Aggregate Base Course in the 1.5” to 2.5” size range, specified as Penndot Subbase, is a robust, crushed stone material engineered for foundational strength and stability. Produced by mechanically crushing and screening quarried rock, this material meets strict Penndot standards for use as a subbase layer beneath roads, parking lots, and other heavy-duty surfaces.

The larger 1.5” to 2.5” stone size provides excellent load-bearing capacity and superior drainage, making it ideal for high-traffic commercial and municipal projects. Its angular shape ensures effective interlocking, reducing movement and settlement over time. While this size is less suitable for fine grading or decorative applications, it excels in structural support and is commonly used in road construction, industrial yards, and as a base for large concrete pads. The Penndot specification guarantees consistent quality and performance, making this aggregate a reliable choice for demanding subbase applications.