Welded Wire Lath vs. Expanded Metal Lath: Which One is Best for Your Masonry Needs?

When it comes to masonry work, choosing the right type of lath is crucial for ensuring the durability and quality of the finished product. T...

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When it comes to masonry work, choosing the right type of lath is crucial for ensuring the durability and quality of the finished product. Two popular options are welded wire lath and expanded metal lath. In this article, we will explore the differences between these two types of lath and help you determine which one is best for your masonry needs.


Welded wire lath is a type of lath made from a grid of steel wires that are welded together at the intersections. It is typically used as a base for plastering or stucco applications. One of the main advantages of welded wire lath is its flexibility. It can be easily bent and shaped to fit the contours of the wall, making it ideal for irregular surfaces. Additionally, welded wire lath is lightweight and easy to handle, which can save time and labor during installation.
Expanded metal lath, on the other hand, is made from a single sheet of metal that has been expanded and stretched to create a diamond-shaped pattern. This type of lath is also used for plastering and stucco applications, but it offers some unique benefits. Expanded metal lath is more rigid than welded wire lath, which can make it more suitable for use on flat surfaces. It also provides a greater surface area for the plaster or stucco to bond to, resulting in a stronger and more durable finish.
When deciding between welded wire lath and expanded metal lath, there are several factors to consider. One important consideration is the type of surface you are working with. If you are working with an irregular or curved surface, welded wire lath may be the better option due to its flexibility. However, if you are working with a flat surface, expanded metal lath may provide a stronger bond and more durable finish.
Another factor to consider is the type of plaster or stucco you will be using. Some types of plaster or stucco may bond better to one type of lath over the other. It is important to consult with a professional or do some research to determine which type of lath is best suited for your specific project.
In terms of cost, welded wire lath is generally less expensive than expanded metal lath. However, the difference in price may be offset by the benefits that expanded metal lath offers, such as increased durability and a stronger bond with the plaster or stucco.
In conclusion, both welded wire lath and expanded metal lath have their own unique benefits and drawbacks. The best choice for your masonry needs will depend on the specific requirements of your project, such as the type of surface you are working with and the type of plaster or stucco you will be using. By carefully considering these factors, you can make an informed decision and choose the lath that will provide the best results for your masonry work.