Header. A brick laid on its flat side across the thickness of the wall, so as to show the end of the brick on the surface of the wall.
Header Course. A course composed entirely of headers.
Head Joint. A joint between the ends of two bricks in the same course. Also Vertical Joint.
Hearth. That portion of a fireplace level with the floor, upon which the fire is built. The rear portion extending into the fire opening is known as the back hearth.
Lead. A part of the wall at the corners, or elsewhere when needed, built in advance of the rest of the wall as a guide to which the line is attached.
Lime Putty. Slaked lime in a soft puttylike condition before sand or cement is added.
Line. The string stretched taut from lead to lead as a guide for laying the top edge of a brick course.
Lintel. A horizontal support for brickwork over an opening.
Mantel. A shelf projecting beyond the chimney breast above the fireplace opening.
Nogging. A filling of brick between the roof rafters from wall plate to roof boards for the purpose of making the building wind-tight.