4 Metal Lath: The Ultimate Guide to Choosing the Right Type

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#### Article: Which Metal Lath Should You Choose?

When it comes to construction and building projects, choosing the right materials is crucial. One such material that often goes overlooked is metal lath. Widely used for plastering and as a base for various applications, metal lath can significantly impact the durability and quality of your projects. This ultimate guide will help you understand the different types of metal lath and how to select the best one for your needs.

**What is Metal Lath?**.

Metal lath is a type of expanded metal or woven mesh made from steel or aluminum. It serves as a support system for plaster, stucco, and other finishes. Unlike traditional wood lath, metal lath offers greater strength and resistance to cracking, making it a preferred choice for many professionals. .

**Types of Metal Lath**.

1. **Diamond Mesh Lath**: This is the most common type and is known for its versatility. It consists of a diamond-shaped hole pattern that provides excellent grip for plaster materials. Available in various thicknesses, diamond mesh lath can be used for interior and exterior applications, including walls, ceilings, and even arches.

2. **Welded Wire Lath**: Composed of horizontal and vertical wires that are welded at intersections, this type of lath offers maximum strength and is often used for heavy-duty applications like stucco. It's a great option for exterior walls that must endure harsh weather conditions. Additionally, welded wire lath can easily adapt to irregular surfaces.

3. **Galvanized Metal Lath**: Known for its corrosion resistance, galvanized metal lath is coated with zinc to prevent rust. This is particularly useful in environments exposed to moisture, making it ideal for bathroom and kitchen applications or outdoor settings where water exposure is likely.

4. **Self-Furring Lath**: This type of lath comes with unique protrusions that allow it to "furr" or space itself away from the underlying surface. As a result, plaster material can be applied to the lath without making direct contact with the substrate, which helps prevent moisture-related issues and improves insulation.

**Factors to Consider When Choosing Metal Lath**.

1. **Application**: The type of application is perhaps the most crucial factor in determining which metal lath to use. For instance, diamond mesh lath is suitable for general wall applications, while welded wire lath is better for areas requiring greater strength and durability.

2. **Environment**: Consider the physical environment where the metal lath will be installed. If you’re working in a humid area, galvanized metal lath would be the appropriate choice to prevent rust and degradation.

3. **Compatibility**: Ensure that the type of metal lath you select is compatible with the finish materials. For plastering, diamond mesh lath is often recommended, while weld wire is better suited for stucco applications.

4. **Cost**: Metal lath comes at different price points. While it may be tempting to choose the cheapest option, consider the long-term performance and maintenance costs. Investing in high-quality metal lath can save you time and money in the long run by reducing the risk of repairs and replacements.

**Installation Tips**.

Once you’ve selected your metal lath, proper installation is vital for optimal performance. Ensure that the lath is securely fastened to the framing using screws or nails. Overlapping the edges of adjacent sheets will help create a seamless surface. And, don’t forget to ensure even coverage of plaster or stucco over the lath for the best results.

**Conclusion**.

Choosing the right type of metal lath is essential for achieving a durable and resilient finish in your construction projects. By understanding the different types available and considering the specific needs of your application, you can make an informed decision that will result in long-lasting structural integrity. Whether you opt for diamond mesh, welded wire, galvanized, or self-furring lath, each option serves a distinct purpose that can enhance the quality of your final build.

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