15
Assembly Instructions - Fire Brick Installation
Fire Brick Installation:
The manufacturer requires that the Standard EPA
qualified firebox be lined with a minimum one and one-eighth
(1-1/8”) thick rated fire brick. The pattern for the fire brick lin
-
ing is an owner option. Standard N-Type brick mortar is a suit
-
able fire brick mortar for the Standard EPA qualified 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 Standard EPA qualified
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 start
-
ing 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.
Expansion
Gap
(Both Sides)
Firebrick Floor
and Backwall
(Built First)
Firebrick Floor
and Backwall
(Built First)
