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2. Raised Hearth Extension and Raised Fire-
place
Non-combustible flooring a minimum of 16 in. (406 mm)
in front of and 8 in. (203 mm) to each side of fireplace
opening of the SA36R. 20 in. (508 mm) in front and 12
in. (305 mm) to each side of the SA42R is required.
The hearth framing must be constructed of non-com-
bustible materials (such as metal framing or equivalent
material) and placed on HX3(s), HX4(s), or equivalent
material. See Figure 7.8.
When creating the platform, allow for the thickness
of the non-combustible finishing materials.
Seal gaps between the hearth extension and the front
of the fireplace with a bead of non-combustible sealant
or grout.
SA36R 16 in. Min
SA42R 20 in. Min
Hearth Extension
1/2 in. Micore
or equivalent
insulation
Figure 7.8
Raised Hearth Extension and Fireplace Framing Materials
Majestic Sovereign Series • SA36R/SA42R • Installers Manual • 4010-259 • Rev K • 1/22
30
Continuous,
non-combustible sealant
Tile, stone or other
non-combustible finishing
material
Protective Metal
Hearth Strips
Non-combustible
Framing Material
Note: The bottom of the fireplace
opening is 8-1/16 in. (205 mm)
above the bottom of the
fireplace. Finished hearth must
NOT extend above this level.
Platform must be built
to raise the bottom of
the fireplace opening
to the level of the
desired hearth height.
Floor and platform constructed of
wood or other combustible material
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