When it comes to hanging objects on walls, anchors play a crucial role in ensuring stability and preventing damage. However, not all anchors are suitable for every type of surface. Plaster walls, in particular, require special attention due to their delicate nature. In this article, we will explore whether certain anchors are unsuitable for specific types of plaster, helping you make informed decisions and avoid potential damage.
Understanding Different Types of Plaster
Before delving into the various anchors suitable for plaster walls, it is essential to understand the different types of plaster commonly found in homes. Plaster can be categorized into two main types: gypsum plaster and lime plaster.
Gypsum plaster is the most commonly used type today. It is a mix of gypsum, sand, and water, creating a smooth, hard surface known for its durability. On the other hand, lime plaster is an older form of plaster made primarily from lime, sand, and water. Lime plaster provides a softer, more breathable surface suitable for historic or older homes.
Choosing the Right Anchors
1. Expansion Anchors
Expansion anchors are typically not recommended for plaster walls. These anchors function by expanding within the hole, creating a secure hold. However, the expansion force can cause plaster to crack or crumble, leading to damage. Due to this, it is advisable to avoid using expansion anchors on both gypsum and lime plasters.
2. Toggle Bolts
Toggle bolts are a suitable option for hanging heavier objects on plaster walls, especially gypsum plaster. They consist of a bolt with spring-loaded wings that expand behind the wall when tightened. Toggle bolts distribute the weight over a larger area, reducing the risk of damage. Lime plaster, however, might not provide sufficient support for toggle bolts due to its soft nature.
3. Plastic Anchors
Plastic anchors are an excellent choice for hanging lighter objects on both gypsum and lime plaster. They are easy to install and provide adequate support for items such as picture frames or small shelves. However, it is important to choose the right size and ensure a proper fit in the wall to avoid strain on the plaster.
4. Winged Plastic Anchors
Similar to plastic anchors, winged plastic anchors are suitable for hanging lightweight objects on plaster walls, particularly gypsum plaster. They have wings that open once inserted into the wall, preventing them from pulling out easily. Winged plastic anchors are easy to install and offer good stability for smaller items.
5. Molly Bolts
Molly bolts, also known as expansion bolts, are not recommended for plaster walls. They require drilling a larger hole, which can cause the plaster to crack or weaken. Molly bolts are better suited for solid materials like concrete or brick, rather than plaster surfaces.
6. Picture Hooks
Picture hooks are a popular choice for hanging frames on plaster walls. There are various types available, such as adhesive-backed hooks or hooks with nails. These hooks are commonly used with gypsum plaster walls, but caution should be exercised with lime plaster. The softness of lime plaster may not provide sufficient support for heavier frames.
Selecting the right anchors for plaster walls is crucial to ensure stability and prevent damage. While gypsum plaster can accommodate a wider range of anchors, lime plaster requires a gentler approach due to its softer composition. Expansion anchors and molly bolts should generally be avoided for both types of plaster, as they can cause cracks or weakening. Plastic anchors, toggle bolts, winged plastic anchors, and picture hooks are suitable options for most plaster walls, but it is essential to consider the weight and use appropriate anchors accordingly. Always test the wall’s strength before hanging heavier objects, and if unsure, seek professional advice to avoid any potential damage to the plaster.