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STEEL STUD
SIDE VIEW
12 in.
MAXIMUM
FACING
SEAL
TRANSITION
APPLIANCE
Figure 3.13 Transition Sealing Detail for Wall Extensions (Side View)
Wall Extension
Wall extension must be sealed to existing masonry wall.
See Figure 3.13. Framing studs may not sit flush against
existing masonry wall. In order to keep heat from escap-
ing behind the wall this transition must be sealed. Also,
slots in steel studs must be sealed.
• Seal with a high temperature silicone 300 °F.
and / or
• Packing insulation into voids between the masonry wall
and steel studs is acceptable.
Note: Combustible materials may be used to seal wall
extension to existing masonry wall as long as it is outside
the non-combustible zone.
Heat & Glo • SUPREME-I25/30/35-IFT, SUPREME-I25/30/35-BIR, SUPRM-I30LP-IFT Installation Manual • 2532-980 Rev. AD • 3/24
16
MASONRY
WALL
SEAL STEEL
STUDS
STEEL STUD
END VIEW
Painting
If desired finishing includes a painted wall, a high-quality
100% acrylic latex paint with a high-quality latex primer
base coat are recommended around the appliance to limit
discoloration. Oil-based or standard acrylic paints may
be more prone to discoloration due to heat exposure.
Drywall Joint-Crack Prevention and Repair
Drywall joints around the fireplace will be affected by ex-
posure to elevated temperatures, along with other envi-
ronmental, structural factors due to new construction, and
methods used to install and finish the drywall. If a crack
does emerge adjacent to the fireplace, it can be perma-
nently repaired by filling it with a paintable latex caulk,
followed by repainting.
Some movement of the screws used to secure the non-
combustible board to the appliance/surround framing is
expected. If a blemish begins to show over a screw head,
sand the surface to remove the blemish and repaint.
NOTE: Concealed sections of 3 in. flex pipe must
be contained inside existing masonry fireplace
flue vent or installed into an existing wood burn-
ing vent system.
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