Glass kiln refractory materials are generally either fire brick or ceramic fiber products that are used to insulate or act as an accessory during the glass fusing process.
Fire bricks are used as a glass kiln refractory insulation material inside some glass fusing kilns, heat quickly and are capable of withstanding high temperatures.
Some fire brick glass kilns will fire fusing glass, metal clay, enamels as well as high fire ceramic clay.
Heating elements are normally pinned and held in grooves in the brick walls and must be kept clean to prolong life and prevent the elements from burning out.
Any foreign matter left on a heating element can cause it to burn out.
As the elements are exposed, they can be easily replaced.
Fire brick kilns must be kept clean as brick dust can fall if the kiln is moved.
Kilns should be regularly vacuumed.
Small fire bricks can be purchased and used as kiln posts or as glass dams.