Limestone Screenings (FDOT Code 21) are finely crushed limestone particles, typically less than ¼" in size, that meet Florida Department of Transportation specifications. This compactable material is commonly used as a base for pavers, sidewalks, patios, and walkways, as well as for backfilling and leveling applications. With excellent compaction, durability, and a smooth finish, FDOT Code 21 Limestone Screenings provide a stable foundation for both residential and commercial construction projects.