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How to Seal Diamond Painting Like a Pro?

Diamond paintings are made with tiny resin diamonds. Once completed, a diamond painting can make an impressive work of art to display in your home. However, since diamond paintings use tiny pieces and adhesive, they require a protective sealant to preserve the artwork and prevent damage over time. Sealing a finished diamond painting properly is an essential step.

How to Seal Diamond Painting Like a Pro?

I know that completing a painting is a bit long task and can take up to a month. By the way, it depends on your speed and the picture size. After completing your artwork, you must consider how to seal the diamond painting.

Don’t worry, I am here to help you with a step-by-step guide to sealing a diamond painting.

Our Canvas is made with high-quality materials and has super adhesive glue on it. However, still, we recommend you use a diamond painting sealer because sealing will make an extra protection layer on your artwork.

Watch the video below to look at the sealing process, or if you want to read a step-by-step process, please continue reading this post.

We want you to invest more money into the diamond paintings, not in the sealing process. So to make the sealing process as cheap as possible, we are using an old paintbrush to apply the Mod Podge on the canvas.

You need to invest less than $10, and your diamond painting sealing will be done.

Prerequisites for Diamond Painting Sealing

We know that you want to seal your diamond painting and you are in a hurry, but there are some prerequisites that you should have before starting the sealing process.

Choosing a Sealant

The first step is selecting an appropriate sealant product for your diamond painting. The goal is to cover the artwork with a clear, protective layer to prevent the resin diamonds from falling off, getting dirty, or deteriorating. Some good options include:

  • Mod Podge – This classic decoupage glue sealer works well for sealing crafts. Look for a formula that dries clear and provides a glossy or matte finish.
  • Spray acrylic sealer – These aerosol sprays provide an even coat and help the colors pop. Make sure to choose one formulated for arts and crafts.
  • Diamond painting sealant – Some specialty sealants are made specifically for diamond paintings. These often contain UV protection to prevent fading.
  • Craft varnish – Water-based polyurethane varnishes designed for paintings and decoupage can also work well. They come in both gloss and matte versions.

Different types of diamond Painting Sealers

There are two types of sealant available for your diamond painting

  1. Brush on sealers
  2. Sprays sealers

Let’s take a look at the sealers that can be applied through brushes

Brush-On Sealer

1st Diamond Painting Sealer copy

Brush-on sealers are the best sealant to prevent your diamond painting from any damage, and they will increase the life span of your diamond painting. You can pick a shiny or Matt finish brush on the sealer.


  • Water-resistant
  • It can be used for other things like wood sealing as well
  • Dust Proof
  • You can mount your painting without the Glass Frame.


  • Your diamonds will lose some shine after sealing
  • You won’t be able to roll up your painting

Spray Sealers

Spray On Sealer

A spray sealer is different from a brush-on sealer. These are used to give a crystal clear and shiny finish to the diamond painting. But it didn’t fill the space between the diamonds like the brush-on sealers.


  • This helps you to make your diamond sparkle for a long time.
  • Waterproof
  • Dries Quickly
  • You can roll up the finished canvas


  • Gaps between the Diamonds will not be filled
  • Less dust resistant

What type of sealer should you choose?

Selecting a sealer is a personal choice. But if you want to know my opinion, I would highly recommend you get a spray-on sealer.

I love diamond painting because it shimmers. If we apply a thick layer of Mod Podge on the diamond painting, it will lose some shine. So we suggest you always use a spray-on sealer. This is just my personal opinion, your opinion may differ from mine but the process of sealing the diamond painting is almost the same.

Preparing the Painting

Before sealing, you’ll need to properly prepare your completed diamond painting to ensure the sealant adheres well. Follow the below steps:

  • Make sure the canvas is laid completely flat and that all diamonds are firmly placed in their correct spots. Press down any loose diamonds.
  • Clean the painting by gently wiping over the surface with a soft brush or cloth to remove any dust or debris.
  • Allow the painting to dry if you’ve used any liquid cleaner fully. The canvas should be clean and dry before sealing.
  • Carefully go over the edges and seal the sides of the canvas with extra sealant so they don’t peel up.

How to Seal Diamond Painting?

Once you prepare the painting for the sealing process. Now it’s time to start with the step-by-step process of sealing the diamond painting.

Total Time: 30 minutes

Set all diamonds properly.

Flatten the canvas

Ensure that all the diamonds are set properly on the canvas. If there are some diamonds popping out of the canvas, then you should place them in the correct place. This is a must-do step for each of your diamond paintings.
As we suggested in our diamond painting tutorial that you should put some weight on the canvas overnight if the diamonds are popping out. You can also use a roller to flatten out the canvas.
You should make sure that all of your diamonds are entirely flat and locked correctly on the canvas.

Dip the brush tip in the sealer jar


It’s time to open the sealant jar that and dip the brush into the sealing solution properly. You can use any painting brush of 2-inch size or any other size according to your diamond painting size.
I don’t recommend investing much in a brush. You can use any old brush to seal diamond art.

Apply the Sealer to the Diamond painting

How to Seal Diamond Painting Like a Pro?

This is the last step in diamond painting sealing with a brush-on Sealer. Now, start applying the sealer to the diamond painting. At first, this will look like glue, but it will become transparent when it dries properly.

Let the sealant dry


Once you applied the sealant to the whole painting. Let it dry and become transparent. It will take around 10-20 minutes.

Hang your Diamond Painting


It’s time to showcase your artwork. After the sealer dries, you can hang this painting to increase the beauty of your house.

Estimated Cost: 10 USD


  • Sealer


  • Brush

Hello, readers; this is the proper method to seal a diamond painting that I always use for my diamond artwork. I also recommend you frame your diamond artwork once you are done with the sealing process. This will give your artwork a long life. If you want to provide suggestions, you are welcome in the comment section.

Please read the FAQs.

Can we use a sealer for partial drill Kits or special shaped kits?

Yes, you can use the sealer on any kit. But we suggest you get a smaller brush for partial kits. Because we don’t want to put the sealant on the part of the canvas that has no diamonds.

Can we use a sealer for round drill kits? 

Yes, as we recommended you can use the sealer on any diamond painting kit.
Sealing the round diamond kit is just as good as a square Drill.

How to clean the sealed diamond painting?

You can clean the sealed diamond painting with a clean cloth with less pressure. You can also use a wet cloth to clean the painting because the sealed painting is water resistant.

Which sealant is the best for diamond painting Sealing?

This is a personal priority that you want to use the brush-on sealers or the spray-on sealers.
If you do not fold your diamond painting, then we suggest you go with a brush-on sealer.
If you think that you will have to fold your diamond painting sometimes, then we recommend you go with a spray-on sealer.

How many coats of sealer are required to seal a diamond painting

We recommend you put only one coat on the diamond painting. If you add an extra mod podge or sealer, the shine of the artwork will decrease.

We hope that these tips about sealing diamond painting have helped you a lot. Thanks for reading.

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