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Fire Brick Installation Isokern Standard & Magnum
Fire Brick Installation:
The manufacturer requires that the EPA Phase 2
qualified Standard Series fireplace firebox be lined with a
minimum one and one-eighth (1-1/8”) thick rated fire brick.
The pattern for the fire brick lining is an owner option. Standard
N-Type brick mortar is a suitable fire brick mortar for the EPA
Phase 2 qualified Standard Series fireplace and good masonry
practices should be followed.
All required through-wall accesses (gas and electrical
line feeds and combustion air supply access holes) should be
drilled before the required fire brick lining is installed.
It takes a total of about five gallons of N-Type brick
mortar mix (dry measure) to fire brick line a fireplace.
Face joints of one quarter inch (1/4”) to three-eights
inch (3/8”) give a good appearance to the finished brickwork
however, this is just a suggestion and other face joint
dimensions are also acceptable.
Step 1. Wet mop the inside of the EPA Phase 2 qualified Standard
Series fireplace with a damp sponge to remove dust and loose
particles from the interior before installing fire brick.
Step 2. Start the fire brick at the front edge of the floor of the
Isokern firebox, proceeding inward toward the back.
HINT:
Dip each firebrick into water before applying.
Step 3. Next, apply fire brick to the back wall of the unit starting
at the bottom of the back wall and working upward to the top
of the back wall.
Step 4. Finally, set the side wall fire brick by starting at the front
edge of the unit’s side wall and working inward toward the back
wall fire brick.
Isokern makes no claims as to the performance
of fire brick or fire brick mortar(s). It is typical for heat
stress cracks to appear in the fire bricks in wood burning
fireplaces.
FIREBRICK FLOOR
AND BACKWALL
(BUILT FIRST)
1/2” EXPANSION
GAP
(BOTH SIDES)
FIREBRICK FLOOR
AND BACKWALL
(BUILT FIRST)