Plaster walls are a common feature in older homes. However, when it comes to hanging objects or furniture on plaster walls, many people are unsure if screws can be used due to the wall’s delicate nature. In this article, we will explore the potential of using screws on plaster walls, considering their strength and durability, as well as the proper techniques and precautions to ensure success.
Understanding Plaster Walls
Before delving into whether screws can be used on plaster walls, it is essential to understand the nature of these walls. Plaster walls are typically made of gypsum plaster layered over a mesh or wooden lath. This construction method can make them more brittle and prone to cracking compared to drywall or other modern wall materials.
Choosing the Right Screws
When considering screws for plaster walls, it is crucial to select the appropriate type. Traditional drywall screws are not recommended for use on plaster walls as they are too sharp and can easily damage the plaster. Instead, it is advisable to use screws specifically designed for plaster walls, known as plasterboard screws.
Plasterboard screws are finely threaded and have a broader head than drywall screws. These characteristics allow them to grip the plaster more effectively and minimize the risk of cracking or crumbling. Additionally, brass or stainless steel screws are recommended to avoid rust stains on the plaster over time.
Techniques for Using Screws on Plaster Walls
Now that we have established the suitable screws for plaster walls, it is essential to follow proper techniques to ensure success without causing damage.
1. Locating the Studs:
Before inserting screws into plaster walls, it is vital to locate the studs behind the plaster for added strength and stability. This can be done using a stud finder or by tapping the wall to listen for a solid sound, indicating the presence of a stud. Screws should be placed directly into the studs whenever possible to ensure a secure attachment.
2. Pre-Drilling Holes:
To prevent the plaster from cracking or crumbling, it is recommended to pre-drill pilot holes before inserting screws. A drill bit slightly smaller in diameter than the screw should be used. This will allow the screw to grip the plaster securely without causing damage.
3. Anchoring Methods:
In cases where studs are not conveniently located, or for lighter objects, it may be necessary to use wall anchors. Plastic wall anchors are a common choice for plaster walls. These anchors expand behind the plaster when screws are inserted, providing additional support. Care should be taken to choose the appropriate size and weight rating for the object being hung.
Precautions and Considerations
While screws can indeed be used on plaster walls, certain precautions should be taken to minimize the risk of damage.
1. Avoid Over-Tightening:
Over-tightening screws can cause the plaster to crack or crumble. To prevent this, screws should be tightened until they are snug but not forced.
2. Patience is Key:
Working with plaster walls can be delicate and time-consuming. Patience is key to avoid causing damage. If resistance is felt while drilling pilot holes or inserting screws, it is important to stop, reassess, and adjust accordingly.
3. Seek Professional Help when Necessary:
For larger or more complex projects, it may be wise to seek the assistance of a professional. They have the experience and knowledge to safely secure items to plaster walls without causing undue damage.
Screws can be successfully used on plaster walls if the proper techniques and precautions are followed. By selecting the appropriate screws, locating studs, pre-drilling holes, and using wall anchors when necessary, it is possible to securely hang objects or furniture while preserving the integrity of the plaster. With patience and care, even those with little DIY experience can navigate the delicate nature of plaster walls and enjoy their functionality for years to come.