Stucco Lath
Understanding the various components of stucco application can be challenging, especially when it comes to terms like ‘stucco lath.’ This guide aims to provide a comprehensive understanding of what stucco lath is and its role in the stucco process. By the end of this article, you will have a thorough grasp of its purpose and importance.
Understanding the Basics of Stucco Lath
Stucco lath is a fundamental step in stucco application, playing a crucial role in waterproofing and providing a supportive base for stucco coats. It involves multiple layers, including water-resistant paper, sometimes EPS foam, and various metal components. These elements form a framework essential for preparing the walls for stucco application. The lath is attached to the wall studs and serves as the foundation for both three-coat and one-coat stucco systems.
The Waterproofing Element: Stucco Paper
Stucco paper, infused with water-resistant asphalt, is akin to roofing felt. Available in different thicknesses, it comes in one or two-ply rolls. The most common varieties are the 10-minute and 60-minute papers, named after their weight and moisture resistance duration. The two-ply option is generally preferred for enhanced protection, offering double the water resistance compared to the single ply.
Stucco Wire: Ensuring Material Adherence
Stucco wire, available in various thicknesses and types, is essential for securing the stucco mix to the wall. Different styles, like traditional wire over foam or square wire over paper, cater to specific requirements. The wire gauges typically used are 17 gauge for three-coat stucco and 20 gauge for one-coat systems.
Key Metal Components in Lathing
Other vital components in the lathing process include galvanized metal pieces crucial for specific stucco wall areas. Variants like stainless steel or copper may be needed in certain environments, such as coastal areas.
- Weep Screed: Found at the wall base, weep screed facilitates water drainage and comes in various styles and sizes, suitable for both three-coat and one-coat systems.
- Plaster Stop: This ‘J’ shaped metal flashing acts as a stucco termination point, often used around doors and wall tops for a cleaner appearance.
- Expansion/Control Joints: These joints are crucial for reducing stucco cracking, with specific designs for movement allowance and controlled break points.
- Corner Aid: Applied to corners and edges, corner aid comes in bull nose and straight styles, enhancing definition and strength.
- Arch Aid: Similar to corner aid but designed for arches and curves, arch aid requires skillful installation for optimal results.
Fastening Techniques: Staples & Nails
Securing the metal lath to the substrate (e.g., plywood, masonry) is typically done using galvanized staples or nails, ensuring durability and corrosion resistance. Staples, used with a staple gun and compressor, are common for their efficiency. Nails, including roofing nails and galvanized 4 penny nails, are also used, depending on the specific requirements of the stucco system.
The Importance of Stucco Lath in Building Construction
Stucco lath plays a pivotal role in ensuring the durability and effectiveness of stucco as a building material. Its components, from waterproofing elements to supportive metal parts, all contribute to the overall stability and longevity of stucco on structures. Understanding these components and their functions is crucial for homeowners, builders, and anyone interested in stucco application. By adhering to local building codes and consulting professionals, when necessary, one can ensure the best results in stucco construction projects.
