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Non-combustible Sealant
After completing the framing and applying the facing
materials over the framing, a bead of non-combustible
sealant must be used to close off any gaps at the top and
sides between the fi replace hearth.
30 in. min.
12 in.
Min.
12 in.
Min.
Figure 11.7 Flush Hearth Extension
Flush Hearth Extension Framing
A raised hearth extension built fl ush with the fi replace
opening (Figures 11.7, 11.8) requires the fi replace to be
installed on a non-combustible surface.
Noncombustible Material
Protective Metal
Hearth Strip
30 in. Min.
Hearth Extension
Micore
Finished
Floor
Note: The bottom of the fireplace
opening is 7-5/8 in. above the bottom
of the fireplace. Finished hearth must
NOT extend above this level.
Figure 11.8 Flush Hearth Extension Side View
Non-combustible Sealant
Figure 11.6 Place Non-combustible Sealant
Heat & Glo • EXCLAIM-50 • 4013-041 • Rev U • 11/08