Glossary or shower resealing & shower waterproofing and general terms which are used and referenced in our shower repair pages.Glossary of Terms for QA B C D E F G H I J K L M N O P Q R S T U V W X Y ZQuarry TileTraditional term for single extruded natural clay tiles with a water absorption level not exceeding 6%. Can be glazed or unglazed.