What is kiln dried sand?

Kiln dried sand is a jointing material created by heating sharp sand in a kiln to remove all moisture content. Once cooled, it arrives at the paving site completely dry and ready for application between block paving units.

The sand is brushed into the gaps between blocks after the paving base has been laid and compacted. As foot traffic and vehicle weight compress the paving, the particles of kiln dried sand lock the units together, preventing individual blocks from moving or settling unevenly. This interlocking action creates structural stability across the entire paved area.

The dryness of kiln dried sand matters because moisture trapped in joints can freeze in winter, expand, and push blocks out of alignment. It also promotes weed growth and allows water to sit beneath the surface. Kiln dried sand eliminates these problems by shedding water and resisting the conditions that allow weeds to establish.

In Cheltenham, block paving contractors use kiln dried sand as standard for paths, driveways, and patios because it combines durability with ease of application. The sand typically remains effective for several years before weathering gradually reduces its binding power, at which point top-up applications may be needed.

Finding a paving contractor experienced in correct jointing technique is important. Poorly brushed or compacted sand will not hold blocks securely. Block paving providers in your area can advise on the right sand grade and application method for your specific project.