This line of base coat stuccos are portland-cement-based stuccos designed as the scratch and/or brown coat in a three-coat stucco application, or the first coat in a two-coat application. The set includes: Scratch and Brown Base Coat Stucco, Base Coat Stucco with Water-Stop, and Base Coat Stucco–Pump Grade. They can be used on masonry and properly prepared wallboard and insulation board surfaces. The Quikrete Cos. Inc. 800-282-5828.