How To Seal A Canvas After Painting

Producing a work of art on canvas is undeniably a thrilling endeavor. Yet, ensuring its longevity can prove to be quite daunting. Thus, it is crucial to seal your canvas after painting in order to safeguard your masterpiece from dust, UV rays, and discoloration. In this guide, we will provide you with a detailed, step-by-step procedure on how to seal a canvas after painting.

Materials You Will Need:

  • Sealant: This is crucial and will protect your canvas from external elements that may harm it. There are different types, including spray sealants and brush-on sealants. They also come in different finishes including matte, glossy, and satin.
  • Brush (if you are using a brush-on sealant)
  • Canvas with completed artwork

Steps to Seal a Canvas:

Here’s the process you should follow to seal your canvas.

Step 1: Choose The Right Sealant

The first step is to choose the right sealant as per your preference and the requirement of your artwork. If your painting has many textured areas and you want to maintain that, a brush-on sealant may be the best option. For a smooth surface, a spray sealant can be used.

Step 2: Apply The Sealant

Once you’ve chosen the right sealant, it’s time to apply it to your canvas.

If you’re using a brush-on sealant, dip your brush in the sealant and apply it to the canvas surface in even strokes. Make sure to cover the entire surface.

If you’re using a spray sealant, hold the can a few inches away from the canvas surface and spray evenly, ensuring you cover the entire surface.

Step 3: Dry The Canvas

Allow the canvas to dry after applying the sealant. The duration required for drying may vary depending upon the type of sealant used. Usually, it takes between 15 minutes to 1 hour. You should refer to the instructions on your sealant for accurate drying times.

Step 4: Apply Additional Coats If Necessary

If you feel that one coat of sealant is not enough, you can apply additional coats. Make sure to allow each coat to dry completely before applying the next one.

Sealing your canvas after painting is an important step in preserving your artwork for years to come. It not only keeps your paint from yellowing but also protects it against UV rays and dust.


Sealing a canvas after painting requires a little effort and time, but the result is worth it. By following these steps, you can ensure that your artwork remains in great condition for years to come. Happy painting!