Glass is a poor conductor of heat, especially in comparison to other materials, such as metal. Glass does conduct some heat, but does so more slowly than other materials.
The concept of glass being a poor conductor of heat is illustrated by cooking equipment. Metal materials, such as iron and copper, are often incorporated in cooking tools, such as grills, trays, utensils, sheets, pots and pans. Along with glass, plastic and wood do not conduct heat as well. Conduction is one of the three methods of transferring energy, including convection and radiation. Conduction requires objects to be in contact with one another.