2"6"
4" 2"
BEARING
2"6"
WOOD (FLAMMABLE)
SHEATHING
MIN. CLEARANCE
MIN. CLEARANCE
BRICK
VENEER
WOOD (FLAMMABLE)
SHEATHING
MAS ONRY VENEER
4x6 STEEL L
MAS ONRY BEYOND
AIR SPACE
MORTAR JOINT
38
Masonry Veneer Construction Details
Brick, stone or other masonry veneer nished fronts to
MAGNUM replaces are possible. Special attention is required
with regards to:
(1) the placement of the proposed masonry
veneer facing and its interface with the MAGNUM re brick
lining, and
(2) the masonry veneer and clearance to combustible framing and
sheathing from any steel “L” support used in the masonry veneer
around the front of the MAGNUM unit behind the veneer facing.
Any proposed brick, stone or other masonry veneer
facing must have sufcient foundation to support the full weight
of the veneer work. This may require review by a local structural
engineer prior to construction.
The veneer facing, when installed, must present a tight
seal with the leading edge - the room edge - of the MAGNUM
re brick lining at the sides of the MAGNUM rebox opening.
(Figure 83)
A steel “L” will need to span the top of the nished
replace opening to carry the masonry veneer as it spans over the
MAGNUM rebox opening. (Figures 80 & 81)
By code requirement this steel “L” must have a minimum
four inch (4”) end bearing. This bearing surface area shall be
provided in the veneer work. (Figure 80) It is important that the
steel “L” is set tight against the MAGNUM’s damper beam front
and set in a mud joint to avoid creating a “false chimney” between
the back of the steel “L” and the MAGNUM’s damper beam front.
(Figure 81)
Steel “L” or “angle” used to support masonry veneer
as it spans the MAGNUM’s rebox opening must, in all cases,
have a two inch (2”) minimum clearance to all combustible
materials. The vertical leg of the steel “L” cannot exceed six
inches (6”) in height.
Note: Properly placed combustible sheathing is kept a minimum
of eight inches (8”) away from the MAGNUM rebox opening
sides and top.
Important: Combustible framing members, normally set at
one and one-half inch (1-1/2”) clearance to the sides of the
MAGNUM rebox must be moved to at least two inch (2”)
clearance to the rebox sidewalls to maintain minimum two
inch (2”) clearance to the steel “L” to avoid a potential re
hazard.
Moving framing members two inches (2”) away from
the rebox side walls will maintain the minimum required two
inch (2”) clearance from the steel “L” and, at the same time
allow full four inch (4”) end bearing required for the steel “L”.
(Figure 82)
FIGURE 81
FIGURE 80
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