NPS Stoneware Glazes
Shop our full range of NPS stoneware brush-on glazes, made in Australia and available in over 25 colours with gloss, satin, matte and crackle finishes.
Stoneware glazes are formulated for high-fire ranges, typically Orton Cone 8–10, producing a durable, vitrified surface suited to functional and decorative pottery.
No, stoneware glazes are designed for higher firing temperatures than earthenware clay can withstand, so using them together can cause poor fit, crazing, or firing failure - always match glaze and clay firing ranges.
Gloss produces a shiny, reflective surface, satin gives a soft sheen between gloss and matte, and matte results in a flat, non-reflective finish - the choice depends on your desired aesthetic and function.
Many stoneware glazes are formulated to be food safe once properly fired to the correct temperature, though it's important to check individual product safety data sheets for specific use recommendations.
Most brush-on stoneware glazes require 2–3 even coats for full coverage and colour depth, though this can vary by specific glaze - always check the product instructions.
Crazing occurs when a glaze and clay body have mismatched thermal expansion rates, often due to incompatible firing temperatures or overly rapid cooling.
