Can You Wash Unglazed Pottery: A Comprehensive Guide

Unglazed pottery can be an intriguing addition to your collection, but the question arises: can you wash them? In this guide, we’ll explore the nuances of cleaning unglazed pottery and provide insights to ensure that your cherished pieces remain in pristine condition.

Understanding Unglazed Pottery

Unglazed pottery is pottery that has not been coated with a glaze to seal it. While seemingly straightforward, the care and cleaning of unglazed pottery require attention to detail. Unlike glazed pottery, unglazed pottery may be somewhat porous, which can affect how you clean it. However, many unglazed pottery pieces are still dishwasher-safe or can be hand-washed with care.

Checking the Glaze Coverage

Most of the time, you can wash unglazed pottery, but the effectiveness of the washing process depends on the coverage of the glaze on your glazed pots. If the unglazed pottery has experienced the same firing process as glazed pots and the entire surface is covered with a thin layer of glaze, it should withstand the same washing methods. However, it is crucial to be cautious, as some clay bodies can still be slightly porous even after the glazing process. This porosity can allow trace amounts of solvents to remain on the surface, making it necessary to take extra precautions to avoid contact with food.

Handling Unpainted Clay Vessels

For those who have made their own unpainted clay vessels, such as drinking cups or decorative pieces, the process might be a bit more delicate. Years ago, I had some drinking vessels created from unfired clay that had been well burnished. These vessels were quite fragile but could be safely used for drinking and rinsing as long as they were not left wet for a prolonged period. This example underscores the importance of understanding the specific properties of the pottery you handle.

Personal Experience and Precautions

As a potter, my experience has been with stoneware. Stoneware, which is highly durable and porous, does not require glazing to be dishwasher-safe. A burnished surface is also suitable for eating and drinking from, although I often give my items an extra rinse. This is based on the principle that undesirable residues, such as the perfumes in dishwasher tablets, should not linger after the wash.

Proper Washing Techniques for Unglazed Pottery

While unglazed pottery can be washed, it is generally best to avoid putting it through a dishwasher. This is because unglazed clay can absorb water, leading to longer drying times. Instead, wash your unglazed pottery by hand. Make sure to use only mild soaps or detergents, and avoid harsh chemicals that could damage the clay. After washing, leave the pottery in an airy place to dry completely before storing it. Proper drying is essential to prevent the growth of mold and mildew.

By following these guidelines, you can enjoy the unique beauty and functionality of unglazed pottery without compromising its quality or longevity.