16
FIREPLACE INSTALLATION
STEP 3: FIREBOX ASSEMBLY (CONTINUED)
BACK WALL AND SIDE BLOCKS
Side blocks and back blocks are next. Completely cover
each component with mortar 1/2” - 1” thick where it will
lie or butt up against another component. Begin by
placing a back block on the base plate (Figure 5.4). Next,
place the corresponding side blocks (Figure 5.5), again
completely covering each edge of a component that butts
up to another component (including the base plate) with
1/2” - 1” of mortar. Use your level to ensure level and plumb
placement of each component.
Continue to build each course of the firebox, making sure
all surfaces are plumb and level and firebox position is
correct (Figure 5.6).
If building a Straight Front unit, build all courses (3 for 30”
and 4 for 36” and 42”) in this manner, making sure each
course is level and flush with adjoining components. Butter
all joints inside and out (see page 14). Once complete, skip
to page 18.
If building an Arched Front unit, read page 17 before
installing the final course of the firebox.
LEVELING AND ALIGNING COMPONENTS
It is important that each course of the firebox is level
and flush with adjoining components
. FireRock mortar
is not intended to create a mortar joint of any thickness
for leveling purposes. Leveling and alignment adjustments
should be made by the use of small shims. Be sure to re-
mortar any gaps resulting from the shims to maintain a
leak-free seal.
FIGURE 5.5
1 COURSE
FIGURE 5.4
BASE PLATE + 1 BACK BLOCK
FIGURE 5.6
3 COURSES
FIGURE 5.7
FULLY ASSEMBLED FIREBOX
Содержание ARCHED FRONT
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