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Section 7: Finishing the fireplace
Install the supplied Non-
combustible cement board to
overlap the new Horizontal &
Vertical 2 x 4's, See Figure 10.
Place the Non-combustible
wall board above the fireplace
throat, allowing ⅛" clearance
from the rim above the fireplace
opening. Pre-drill the board with
⅛" drill and secure to framing
with Nails, use flat heat sheet
metal screws to fasten the board
to the metal header.
Cement board dimensions
Non-Combustible
Model
cement board
R320
52 ½" x 15 ½"
R420
62 ½" x 15 ½"
R520
72 ½" x 15 ½"
R720
72 ½" x 15 ½"
R820
82 ½" x 15 ½"
Cut standard Gyproc / Drywall
b o a r d t o c o m p l e t e t h e
installation of the surround. Fit
the edge of the board to the rim
around the fireplace opening.
Fasten the board in place using
standard drywall screws.
22
Sheet metal Screws to attach Non Combustible
cement board to Steel header
Pre-drill for Nail fasteners
Combustible framing
Clearance required for
expansion of the fireplace
when in operation.
⅛"
Figure 10. Non-combustible Board over the Fireplace, (supplied by Montigo).
Figure 10.b Fireplace installation (Cut the remainder of Gyproc / Wall board to complete the fireplace surround).
Installation
Non-Combustible cement board,
(supplied by Montigo) or Equiv.
Wall board / Gyproc or
Wall board / Gyproc or
Equiv. (Bottom & Sides)
Equiv. (Bottom & Sides)
XG0225 - 170223
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