New Advancer kiln shelves are ready to use. They have already been fired to temperatures in excess 2700F (cone 16) during manufacturing. It is not necessary to conduct an initial seasoning, bake in or dry out firing. Use a damp sponge to wipe off any surface dust prior to your initial firing.
Generally this will not cause a problem, but we recommend letting green or freshly glazed pots dry completely prior to firing on ADVANCER®.
No. It takes prolonged exposure to a continuous moisture source to cause problems. It should also be noted that there is no evidence of atmospheric humidity causing moisture problems with ADVANCER® shelves. They are in use almost everywhere in the world!
Due to the extremely low porosity (less than 1%) of ADVANCER® kiln shelves, it takes prolonged exposure to a direct and continuous moisture source such as rain, standing water from a floor or condensation to penetrate the shelf. Water is slow to get in, and once in it is slow to get out. Therefore a temperature controlled dry out schedule must be observed prior to taking the shelves to normal firing temperatures. Slow bisque firing is not adequate to insure complete moisture removal! If you know or suspect that your shelves have water in them, you must follow the dry-out schedule outlined in the Saint-Gobain Technical Bulletin Warning “Storing and Drying Requirements for ADVANCER® Refractory Components.” If you are uncertain about moisture exposure problems with your shelves, please don’t hesitate to contact us!