*PLUMBERSSTOCK EXPERT* responded:
Thank you for asking us at Plumbersstock.com about the BZ-1 Porc-A-Fix kit! According to the manufacturer, yes, it will self-level after multiple coats in a large chipped area of porcelain. You just need to even it out using sand paper. To begin the ordering process, please click the Add to Cart button, enter your zipcode and your billing information, and we will take care of the rest. Happy Shopping!