Plaster of Paris and Finishing Plaster are two commonly used materials in the construction industry. While they may look similar, they are not the same thing. In this article, we will discuss the differences between Plaster of Paris and Finishing Plaster.
What is Plaster of Paris?
Plaster of Paris, also known as gypsum plaster, is a white powder made by heating gypsum to a high temperature until it becomes dehydrated. When water is added to this powder, it hardens into a solid mass.
Uses of Plaster of Paris
Plaster of Paris is commonly used for making molds and casts. It is also used for creating decorative finishes on walls and ceilings. Additionally, it can be used for repairing cracks in walls or ceilings.
Characteristics of Plaster of Paris
Plaster of Paris has a smooth texture and is easy to work with. It dries quickly and can be sanded or painted once it has set.
What is Finishing Plaster?
Finishing plaster, also known as skim coat plaster or topcoat plaster, is a fine-grained plaster that is applied to walls or ceilings as a final layer. It is typically used to create a smooth surface that can be painted or wallpapered.
Uses of Finishing Plaster
Finishing plaster is primarily used for creating a smooth surface on walls or ceilings before painting or wallpapering. It can also be used for repairs on small areas.
Characteristics of Finishing Plaster
Finishing plaster has a fine texture and dries quickly. It can be easily sanded to create a smooth finish before painting or wallpapering.
Differences between Plaster of Paris and Finishing Plaster
The main difference between Plaster of Paris and Finishing Plaster is their intended use. Plaster of Paris is used for making molds and casts, while Finishing Plaster is used for creating a smooth surface on walls or ceilings.
Another difference is their texture. Plaster of Paris has a rough texture, while Finishing Plaster has a fine texture.
Lastly, the drying time of the two materials is different. Plaster of Paris dries quickly and can be sanded or painted once it has set. On the other hand, Finishing Plaster takes longer to dry and must be sanded before painting or wallpapering.
Conclusion
In summary, while Plaster of Paris and Finishing Plaster may look similar, they are intended for different purposes. It’s important to choose the right material for your project to ensure that you achieve the desired result.