Lathing and waterproofing are essential steps in the process of applying exterior stucco. Lathing refers to the installation of a metal mesh over the exterior wall, which provides a secure base for the stucco to adhere to. It is also important because it creates a drainage plane that allows water to escape and helps prevent moisture from penetrating the building's interior. Waterproofing involves adding a layer of moisture-resistant material between the lath and the stucco. This layer can consist of a waterproof barrier paper or a liquid-applied membrane that helps to prevent water from penetrating the stucco and seeping into the wall cavity, potentially causing damage. Proper lathing and waterproofing are crucial for ensuring a long-lasting, durable, and visually appealing stucco finish

Before beginning any stucco project, it is crucial to prioritize the lathing and waterproofing process. Lathing serves as the foundation of your stucco finish and offers protection against moisture intrusion to the house's structural framing while providing a sturdy support system for new stucco or hardscape work. The lathing process involves multiple steps, such as the installation of weep screed, waterproofing paper (60-Minute Moisture Barrier - ESR-1027), lath wire, expansion joints, Milcore, plaster stops, corner aids, and any necessary arch aids. In summary, lathing and waterproofing are among the most critical steps in the stucco process.