J
- Jamb Bullnose
- Tile with two opposing bullnosed edges, which is used to finish shower curbs and shower door enclosures. (See Bullnose Tile)
- Jar
- Cylindrical glass with a lid or removable cover; usually without handles.
- Joints
- Spaces between stone and ceramic tiles, which is usually filled with grout. (See Ceramic)
- Junction Box
- Enclosure that houses electric wires or cables which are joined together, protecting the connections.
