Red Epoxy is allowed to cure without heat it retains its deep red color. The period of time required for an epoxy mixture to become unworkable is referred to as the pot life. Red Epoxy has a pot life of about 4 hours. This means that Red Epoxy can be used for repairs up to 4 hours after mixing. Finally, the Red Epoxy mixture is heated and the reaction rate is accelerated. When the color changes from red to gold the product is completely cured.