buy expanded metal lath for stucco

Expanded Metal Lath A Crucial Component for Stucco Applications

When it comes to building durable and aesthetically pleasing exteriors, using the right materials is essential. One such material that has gained popularity in the stucco application is expanded metal lath. This versatile product not only enhances the strength and durability of stucco finishes but also provides a reliable base for plaster applications. In this article, we will delve into what expanded metal lath is, its advantages, and why it is a vital choice for stucco systems.

What is Expanded Metal Lath?

Expanded metal lath is a type of wire mesh created from a single sheet of metal that has been slit and stretched to create a mesh-like pattern. This process results in diamond-shaped openings that allow for better bonding of plaster and stucco. Typically made from galvanized steel or aluminum, expanded metal lath is known for its durability, making it suitable for various exterior applications.

Advantages of Using Expanded Metal Lath for Stucco

1. Enhanced Bonding Capabilities The serrated edges and open mesh structure of expanded metal lath allow for better mechanical bonding with stucco. This leads to a more robust and long-lasting finish that is less prone to cracking.

2. Lightweight Yet Strong Despite its lightweight nature, expanded metal lath possesses impressive strength. Its design allows it to distribute stress evenly across the surface, reducing the likelihood of damage under environmental pressure.

3. Weather Resistance Galvanization makes the metal lath resistant to corrosion and rust. When used in stucco applications, this ensures that the underlying structure remains safeguarded against moisture and weather-related wear.

4. Versatile Applications Beyond stucco, expanded metal lath can also be used for a variety of plastering techniques, providing a reliable base for mortar, cementitious materials, and even thin-layered finishes.

5. Cost-Effectiveness While the initial purchase price may vary based on thickness and type, the long-term benefits of using expanded metal lath often outweigh the initial costs. Its durability and reduced maintenance needs translate into savings over time.

Installing expanded metal lath is a crucial step in ensuring a successful stucco application. Here are the key steps involved

1. Surface Preparation Before installing the metal lath, the surface must be clean, free of dust, debris, and any loose materials. This ensures proper adhesion.

2. Application of Base Coat A scratch coat, usually a mix of sand, cement, and water, is applied to the surface. This coat provides a textured surface for the metal lath to grip onto.

3. Lath Placement The expanded metal lath sheets are then positioned on the scratch coat, overlapping at the seams to provide a continuous surface. Fasteners are used to secure the lath to the substrate, ensuring it remains tight and firm against the wall.

4. Second Coat and Finishing After the lath is securely in place, a brown coat or additional scratch coat may be applied, followed by the finish coat of stucco. Each layer must be given adequate curing time to ensure optimal adherence and performance.

Choosing the Right Expanded Metal Lath

When selecting expanded metal lath for your stucco project, consider the following

- Material Thickness Thicker lath provides added durability but may also increase the overall weight. Assess the requirements of your specific project to determine the appropriate thickness.

- Type of Finish Different types of stucco finishes may require different styles of lath. Ensure that the lath selected is compatible with the intended finish.

- Corrosion Resistance If you are in a coastal or high-humidity area, opt for galvanized lath to enhance its lifespan and performance against rust.

Conclusion

Expanded metal lath is an indispensable component in stucco applications. Its unique properties allow for improved bonding, strength, and longevity of stucco finishes, making it a preferred choice for builders and contractors alike. By understanding the benefits and proper installation techniques, you can ensure a resilient and beautiful exterior that stands the test of time. As you consider materials for your next stucco project, investing in quality expanded metal lath will undoubtedly pay off in both durability and aesthetics.