How to Seal Spray Paint on Glass

How to Seal Spray Paint on Glass

If you’re interested in how to spray paint glass, this is the post for you. There are certain preparation steps, techniques involved during the painting process, and sealant steps to take to achieve the best results.

This post takes you through how to prepare your glass, spray paint it, and ensure that the paint sticks to the glass once done. 

Preparation for Paint Glass

Due to how glass is a sheer surface, it’s more difficult to get things to stick. Therefore, there are preparation steps to take to ensure that your spray paint can stick to it properly. 

  • Start by washing the glass surface with water and soap to remove dust particles and debris before leaving it to air dry. This will make for a smooth surface that’s better for applying multiple thin coats of spray paint.
  • You should also tape up any areas of the glass that could come into contact with your mouth when the process is done. For example, if you’re spray painting glasses, tape up the top of the glass so that any solutions and paint don’t get ingested. 
  • Rub down the glass surface with alcoholic spirits or rubbing alcohol to help with the adhesion of the glass. 
  • Apply the spirit to a soft cloth and wipe it over the glass gently. 
  • Next, apply primer to the glass. The type of primer will vary depending on the kind of paint you’re using. 
  • Primers have quick drying times. Therefore, you should be ready to paint within around 10 minutes of applying the primer.
  • Make sure to wear gloves during these DIY projects.

Painting Glass

  • Start by shaking your paint can and spraying it across the glass surface, using light coats.
  • It’s better to add multiple thin coats rather than fewer thicker coats. 
  • Aim to spray smoothly and evenly across the entire surface until it’s covered. 
  • After you’ve sprayed on the first coat, leave it to dry for a little while before adding additional coats. 
  • It usually takes 3-4 hours for each coat to dry properly. 

Applying Sealant

  • Use a special glass sealant spray to apply over the top of the spray paint.
  • Make sure that you’ve left the glass to dry for at least four hours before applying any sealant. 
  • Apply one light coat of sealant before leaving to dry completely. 
  • Once it’s dried, you can inspect it and see if you want to add additional light coats. 

Also read: How to Write on Glass Permanently


Applying sealant to your spray-painted glass can ensure that it lasts for longer and doesn’t smudge or crack. It can also add a fantastic aesthetic to your work.

Be sure to implement the above painting tips when spray painting glass surfaces. It’s also best to do it in well-ventilated areas or outdoors. 


Will spray paint stick to glass?

Apply spray paint directly to glass can stick, but it’s likely to crack and wear down over time. However, if you apply spirits or primers first, the paint can stick to the surface more effectively. 

Can you spray paint glass jars?

Glass jars can be spray painted with synthetic and oil-based spray paints. 

Can you use acrylic paint on glass?

Yes, as long as you seal acrylic paint properly, it can be used for glass painting.

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Written By Adam Rushton

Adam has made a name for himself in the illustration industry and is a passionate blogger and writer on the subject of art, illustration and graphic design.

His artwork has been featured in countless publications and used for very well-known media projects. As a professional illustrator for over 20 years, Adams media outlets, a wealth of knowledge, and experience enable him to consult and advise artists and illustrators in this country (from York and Manchester to Southampton and London) and all over the world.