StoPowerwall^™ Stucco Pre-Blended is a controlled blend of Portland cement, fibers, graded sand, and chemical additives. StoPowerwall^™ Stucco Pre-Blended, when combined with water at the jobsite, performs like traditional stucco. StoPowerwall^™ Stucco is suitable for use in residential and commercial wall construction over properly prepared concrete and concrete masonry, or metal plaster bases.