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Non-combustible Sealant
After completing the framing and applying the facing mate-
rials over the framing, a bead of non-combustible sealant
must be used to close off any gaps at the top and sides
between the replace and hearth.
Non-combustible Sealant
Figure 12.7 Flush Hearth Extension
Flush Hearth Extension Framing
• Fireplace must be recessed 3 3/4 in. (95.3 mm) below the
nished oor.
• Refer to Figures 12.7 and 12.8.
Figure 12.8 Flush Hearth Extension Side View
Figure 12.6 Place Non-combustible Sealant
Non-combustible Finishing Material
Protective Metal
Hearth Strip
30 in. Min.
Hearth Extension
1 in. (25.4 mm)
Micore and
1/2 in. (13 mm)
Durock
Finished
Floor
Bottom of
Fireplace Opening
Note: The bottom of the fireplace opening
is 3-3/4 in. (95.3mm) above the bottom of
the fireplace. Finished hearth must NOT
extend above this level.
Heatilator • Birmingham BIR42-B • 4059-681• 11/11