How to Seal Acrylic Paint on Glass? Make It Last A Lifetime

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You can show your creativity by painting on glass. It is very enjoyable too. It is cheap also. Because you do not need to buy glass paint or other expensive elements to start a project.

You can make the design yourself on glass with acrylic paint. For long-lasting acrylic paint, seal the completed artwork. For that reason, you have to know how to seal acrylic paint on glass. Before sealing the paint, ensure that the paint on the glass has dried perfectly. You cannot seal the paint until it dries properly.

Which paint will stick to Glass?

While choosing paint, choose a paint that will stick to glass. All types of acrylic paints do not stick to glass easily. It will be best to use enamel-based paint to make the glass surface prepared.

You can brush or spray the primers and dry the paint for 24 to 72 hours.

Once dry, the surface should feel a bit rougher, which will increase the adhesion between the primed surface and the paint.

The dry surface will feel a bit rough which will make the glass stained. Glass priming is necessary for permanent artwork.

choose the best acrylic paint that will stick to the glass
Choosing the best acrylic paint for glass

How To Seal Acrylic Paint On Glass?

You can seal acrylic paint on glass by any of the following three methods:

  1. Spraying sealant on Painted Glass
  2. Brush-On Sealant on Painted Glass
  3. Baking or Heating the glass piece in an oven.

Both the methods will give you a good result. They will protect your glass artwork for a long time.

Spraying Sealant On Painted Glass

  • At first, select your desire sealant. You will find both spray-on and brush-on. To tell the truth, I will suggest you to apply the spray-on type sealant as it takes a shorter time to dry completely.
  • Read through the cautions written in the packaging carefully. You also should read the instructions about sealant use. 
  • Select an open area with good ventilation for the workspace as most of the sealants have powerful smells and poisonous smoke. 
  • Apply the sealant. Spray it slowly and coat the whole area properly. Do not spray any part too much. Try to make a balanced layer.
  • Dry the layer for some time. 20 minutes is normally enough to dry properly. Some sealant takes more times. So, you should read the instructions before using them. 
  • Follow the steps repeatedly and make 3 layers of sealant anointment. 
  • Now dry it. It needs to dry for 24 hours.

Brush-On Sealant on Painted Glass

If you want to apply brush-on sealant, follow the instructions:

  • Read through the cautions written in the packaging carefully. You also should read the instructions about sealant use. 
  • Select an open area with good ventilation for the workspace as most of the sealants have powerful smells and poisonous smoke.
  • Soak the brush onto your sealant. Keep it over the sealant pot and let your brush drip off surplus sealant
  • Now, brush the sealant on your glass paint and create a layer.
  • Let the layer dry. This process takes more time to dry than spray-on sealant. It will take a minimum of an hour to dry perfectly.
  • Follow the steps repeatedly and make 3 layers of sealant anointment.
  • Now dry it. It needs to dry for at least 24 hours.

Your real work is done. You do not need to be panicked about the long-lasting of your glass artwork anymore. Though a few artists disagreed that these methods are not enough. They suggest following another method of sealing. Let’s see the next method below.

Baking or Heating the Glass Piece in an Oven

  • Read through the instruction written in the packaging carefully. Ensure baking or heating process, suitable temperature for baking or heating, precautions, etc.  
  • You can use an oven for heating. Keep your glass in the oven. Then turn on the oven. Let the glass heat up and cool slowly otherwise the glass may break down. 
  • Bake the glass piece for 30 minutes using a temperature up to 300 to 360 degrees. For an analog oven, you will need a thermometer to ensure accurate heat. But in the digital oven, you can see the temperature on the oven screen. 
  • When the baking is done, turn off the oven and let the glass piece to cool down.

Your work is done.

Tips for Successful Sealing on Painted Glass

You need to ensure that the paint on the glass has been dried properly before applying sealant or baking it in the oven. For a better result, dry your painted glass piece at least 24 hours before baking it. You always try to be careful to wash your glass paint. It is better not to use water for regular washing. I will suggest you clean the dust with a soft cloth or tissue paper.

Tips for Painted Glass Safety

As chemical sealant is harmful to health, you should not use the chemical sealant method for painting food items glass. Rather you should apply the oven method. You can apply the chemical sealant method only for painting nonfood items only.

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