a. Header Closure. Figure 3-10 shows the proper way to butter and place a closure brick in a
header closure. After buttering the opening, put as much mortar as will stick on both faces of the header
and push it into place.
Figure 3-10. Buttering and placing the closure brick
in the header course
b. Stretcher Closure. The technique for buttering and placing the closure brick in a stretcher course
is shown in Figure 3-11, page 3-12.