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C. Framing and Finishing Instructions
Finishing Instructions
It is important to follow the framing and finishing instruc-
tions to ensure proper placement of fireplace into the sur-
rounding framing/finishing materials.
Wall sheathing materials 1,3 cm thick are specified in
this installation manual to properly align with the factory-
installed non combustible material.
WARNING! Risk of Fire! DO NOT remove the factory-
installed non-combustible board or cover it with combus-
tible material, such as:
• Drywall (gypsum board)
• Plywood
• Materials that do not meet the ASTM E 136 Non-com-
bustibility standard (below).
Removal of factory-installed, non-combustible board and/
or use of materials not meeting the ASTM E 136 standard
may cause fire.
Gypsum wallboard (drywall) joints adjacent to the
fireplace opening require special attention to minimize
potential development of cracking. Hearth and Home
Technologies recommends the following steps to mini-
mize potential cracks in the finished drywall around the
fireplace opening:
•
When installing gypsum wallboard around the fire-
place, install the hole for the fireplace opening in a
single wallboard sheet, if possible. This will mini-
mize the joints adjacent to the fireplace opening.
•
The factory-supplied non-combustible board and the
gypsum wallboard must join on the structural fram-
ing, where applicable. Wallboard and non-combus-
tible board should be fastened to the framing with at
least 1.25" long screw fasteners, located within 1.5"
from each corner, and at no more than 12" intervals
along the joint length.
•
The wall-board joints should be finished with a Tap-
ing Coat, followed by at least two subsequent Finish
Coats of joint compound.
•
For the initial Taping Coat, it is critical that a general-
purpose chemically hardening joint compound, such
as SHEETROCK™ Brand Durabond™ Setting-Type
Joint Compound, be used to fill the joint and embed
the mesh tape. Fiberglass-mesh tape is recom-
mended because it will provide a more crack-resis-
tant joint than one finished with paper tape. Let the
Taping Coat properly cure before applying subse-
quent Finish Coats.
56
Heat & Glo • SOHO-B-CEB, SOHO-N-CEB, SOHO-P-CEB • 2111-980 Rev. i • 3/13
•
For the second and third finishing coats, it is ac-
ceptable to use a light-weight joint compound and
standard application, curing and sanding methods.
•
Do not operate the fireplace during the drywall finish-
ing process. Allow the finish coat to cure for at least
24 hours prior to using the appliance.
Painting
If desired finishing includes a painted wall, 100% acrylic
latex with compatible primer is recommend around the
appliance. Oil-based or standard acrylic paints may
discolor due to heat exposure.
Wallboard Joint-Crack Prevention and Repair
Wallboard joints around the fireplace will be affected by
exposure to elevated temperatures, along with other en-
vironmental and structural factors. The specific methods
presented in the previous section will help prevent or
minimize development of cracks.
If a crack does emerge adjacent the fireplace, it can be
permanently repaired by filling it with spackling paste or
paintable latex caulk, followed by repainting.
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