J

Jalousie Window

This window has stationary or adjustable blinds that are angled to permit airflow and provide shade, while preventing rain from entering.

Jamb

The vertical side of a door or window frame. Can be a vertical piece of wood or other material that lines the sides of door or window frames.

Jamb Anchor

A steel anchor used to fasten steel door frames to the wall or partition construction.

Jamb Block

Concrete masonry unit with a preformed slot to accept a window or door frame.

J-Box

An electrical junction box.

Jet

This toilet feature is designed to start the siphoning action quickly by directing water into the trap way. Also used in bathtubs to create a whirlpool.

Jobsite

A place where construction takes place.

Joint Compound

A material used in covering joints, corners and fasteners. Also called Spackle or Joint Cement.

Joint Reinforcing Tape

A type of paper, metal, fabric, glass mesh, or other material, generally used with a joint compound to reinforce the joints between adjacent gypsum boards.

Juxtaposition of Colors

Placing colors side by side that complement or contrast each other.

Juxtaposition

Placing of things side by side.