AY Honors/Mountains/Requirements
From Pathfinder Wiki
Along with safety benefits, unglazed ceramic and porcelain tiles are sought after because of their scratch resistance and natural beauty. Since they’re colored by the mineral deposits from where the clay was originally taken, these tiles offer an earthy aesthetic quality. A limitation of unglazed ceramic and porcelain is their vulnerability to staining. As a precaution, it’s a good idea to use a sealant and wax after installing unglazed ceramic tile indoors.
