Limestone #21 FDOT

Limestone screenings (FDOT Code 21), also known as #21 limestone, are finely crushed limestone particles 3/8 inch and smaller that meet Florida Department of Transportation (FDOT) specifications. This highly compactable material creates a smooth, firm surface that locks tightly under pressure, making it ideal for precision grading and finishing work where stability matters. Its fine texture allows it to fill voids effectively while maintaining structural integrity in residential and commercial construction projects.

Common applications for limestone screenings (FDOT Code 21)

• Base and leveling layer for pavers, patios, and walkways
• Sidewalk and hardscape preparation
• Backfilling around utilities and small structures
• Surface smoothing before final compaction