Dryvits Sandpebble Base Finishes are durable, providing, surface color and texture for their systems. These finishes can also be applied over properly prepared substrates such as exterior masonry, stucco, precast or cast-in-place concrete and other approved substrates. The Sandpebble finishes are also suitable for interior applications. All finishes can be trowel applied or spray applied with a hopper gun or pole guntype sprayer.