The E Finish formulations use a high performance, proprietary derivative of volcanic glass called V-Rock which, when blended with the company's aggregates, makes the finishes lighter. The E Finishes, which can be troweled or spray-applied as part of a Dryvit system or over properly prepared substrates such as exterior masonry, stucco, pre-cast or cast-in-place concrete, are available in three textures; Quarzputz E, Sandpebble Fine E and Sandpebble E. All three finishes are pre-mixed, 100 percent acrylic-based coatings which are offered in standard and customized colors.