Plaster and Lath Walls in Old Houses: A Guide to Identification and Repair

When it comes to old houses, it's not uncommon to find plaster and lath walls, a traditional construction method that was popular before the widespread use of drywall. While plaster and lath walls can be aesthetically pleasing and offer unique benefits, they also present challenges when it comes to repair and maintenance. In this article, we'll explore the key differences between plaster and lath walls and drywall, as well as provide guidance on how to identify and repair plaster walls.

The Basics of Plaster and Lath Walls

Plaster and lath walls consist of multiple layers of plaster applied over a wood or metal lath base. The plaster is typically applied by hand, using a trowel, in multiple layers over the lath base. This process can be time-consuming and labor-intensive, but it produces a durable and resilient wall that can withstand the test of time.

One of the primary differences between plaster and lath walls and drywall is the application process. Drywall, also known as gypsum board, is applied in large sheets and secured to the studs using screws or nails. In contrast, plaster and lath walls are applied by hand, layer by layer.

Another key difference is the level of fire resistance offered by each type of wall construction. While both plaster and drywall offer some degree of fire resistance, plaster walls have a higher rating due to their thickness and density.

Identification and Repair

Identifying plaster and lath walls can be challenging, as they often resemble drywall at first glance. However, there are several key indicators that can help you determine whether a wall is made of plaster or lath:

* Look for signs of cracking or settling: Plaster walls are more susceptible to cracking due to building settlement or thermal expansion/contraction.

* Check the texture and finish: Plaster walls typically have a smooth, even finish, while drywall may have a bumpy or rougher texture.

* Inspect the seams: Drywall seams are typically covered with tape and joint compound, while plaster seams may be more visible due to the lack of tape.

When it comes to repairing plaster walls, it's essential to work with a skilled tradesperson who has experience with this type of construction. Plaster walls can be fragile and require specialized techniques to repair.

While plaster and lath walls may present some challenges when it comes to repair and maintenance, they also offer unique benefits and aesthetic appeal. By understanding the key differences between plaster and lath walls and drywall, homeowners can better identify and address any issues that arise. Whether you're dealing with an old house or simply want to learn more about this traditional construction method, we hope this guide has provided valuable insight into the world of plaster and lath walls.

Plaster and lath walls old house