How to Paint Glass with Heat-Resistant Paint

Heat resistant paint protects surfaces from peeling and cracking. It is able to expand with a very high elasticity. This flexibility assures that the surface will not endure any corrosion. Heat resistant paint dries quickly and can withstand temperatures up to 650 degrees Celsius. Since the heat can maintain such an extreme temperature, it is able to be used on barbecue grills, boilers, wood stoves, cast iron chimneys and furnaces. Regular enamel paint cannot sustain heat since it does not have the resistance.

To paint glass with heat resistant paint, the paint must be able to control the heat temperature when the glass is placed in the oven or wherever it will become hot when in use. The tools and steps on how to paint glass with heat resistant paint are listed below. 

Tools Needed

  • Ammonia-Based Cleaner
  • Sandpaper
  • Glass Conditioner
  • Enamel Glass Paint (or Liquitex Acrylic Glossies Paint)
  • Sponge
  • Paintbrush
  • Glaze

Step 1 – Cleaning the Glass

Clean the glass surface with ammonia, or an ammonia-based cleaner, using a soft cloth. This will help cut through grease or any other residue that may be built up on the surface. The glass will then be free of residue for the paint to stand through any high temperature experience. You can dip the glass in water, dampen a piece of fine-grit sandpaper, and softly wet sand the glass. This lessens the amount of dust and conceals any visible scratches that the glass may have. Rinse the glass with clean water and allow it to dry.

Step 2 - Preparing the Glass

To make sure the surface of the glass is clean, apply a glass conditioner to the area of the glass you will be painting. The glass conditioner serves as a primer to strengthen them. The glass conditioner also fills in any small scratches or imperfections. In this instance, the glass conditioner will sink in the grooves in the glass and make the paint more durable by bonding with it. In doing this, the glass is kept smooth and even. Get a clean cloth and rub a thin layer of conditioner over all the surface of the glass. Let the conditioner dry.

Step 3 – Painting the Glass

Use paint that is specially formulated for glass painting. Delta creative perm enamel Glass Paint or Liquitex Acrylic Glossies are paints that make glass heat resistant when applied. They also make the glass durable enough to withstand dishwasher and microwave action. Put the glass away for a few days to allow it to completely dry.

Step 4 - Glazing   

Using a clean paintbrush, apply a thinly coated layer of glaze over the paint. This is added protection from heat. Let the glaze dry.

Step 5 – Curing

Put the glass in a safe place where it will be allowed to just sit and cure for 10 days. After 10 days of curing, the glasses are heat resistant, microwave and dishwasher safe!