Can You Put Plaster of Paris on Canvas?

By Michael Ferguson

Plaster of Paris is a popular material used for creating sculptures, walls, and even decorative pieces. However, one question that often arises is whether it can be used on canvas. This article aims to answer that question.

The Short Answer

Yes, you can use plaster of Paris on canvas. But it’s important to take some precautions before doing so.

Preparing the Canvas

Before applying any material to the canvas, it is important to prepare the surface properly. Firstly, make sure that the canvas is stretched tight and free from any creases or folds.

Then apply a coat of gesso over the entire surface of the canvas. Gesso is a primer that prepares the surface for painting or other materials to be applied.

What is Plaster of Paris?

Plaster of Paris is a white powder made from gypsum. It can be mixed with water to form a paste that hardens quickly and becomes very strong when dry. Plaster of Paris has been used for centuries in construction, sculpture, and even medicine.

How to Apply Plaster of Paris on Canvas

Once your canvas is properly prepared with gesso, you can begin applying plaster of Paris. Start by mixing plaster with water until it forms a thick paste-like consistency. Next, apply the plaster onto your gessoed canvas using a palette knife or spatula.

You can experiment with different textures by using different tools such as brushes or sponges. Once you have applied the first layer of plaster, let it dry completely before adding another layer.

Things to Keep in Mind

It’s important to remember that plaster will add weight to your canvas which could cause it to sag over time if not properly supported. Additionally, if you plan on painting over your plastered canvas make sure you use acrylic paint as oil paint may not adhere to the surface as well.

Conclusion

In conclusion, plaster of Paris can be used on canvas with proper preparation and precautions. It can add an interesting texture and dimension to your artwork. Just remember to prepare the canvas with gesso, apply the plaster carefully, and consider the weight and painting medium you plan on using.