How to Add Sand or Clay on Top of a Stone Driveway

Sweep the stone pavement with a stiff broom. Use a narrow hand brush to remove any leaves, dirt or other debris embedded in the gaps between stones. If the stones are uniformly cut pavers, the gaps will be too narrow for a brush. Use a blower to force out debris.

Pour fine polymeric paver sand over the first section of pavers. The sand should be dry so it can pack densely into narrow joints. Courser sand is typically made with clay content and is a better fit for snapped, irregularly shaped stones with larger joints.

Use a stiff brush to push the sand or clay between the joints. Continue adding the material until the joints are filled in each section of the driveway. Brush off any excess from the surface.

Cover the entire stone driveway with a light sprinkle of water using a hose. Too much water will cause the joint fill to float away. Spray just enough to moisten the sand and weigh it down. As it dries, the sand or clay will harden in place.

Add a second layer of sand or clay into the joints once the first layer hardens. Pack it down so it’s level with the stone pavement and moisten the surface again.

Roll stone sealant over the surface with a roller brush once the joints dry. Sealant is optional but it preserves the joint fill longer.