23
FV42
85-03-01068
HEARTH PROTECTION PAD REQUIREMENTS
Hearth Protection R Rating: MINIMUM R-1 is required.
Consult the R-1 Value Table for reference.
Hearth Pad Guide
This fireplace requires an R-1 rated hearth protection 18” deep and no less than the width of the unit. For
every 1” the unit is raised, the hearth depth can be reduced by 2”. Once the unit is raised 6” or more, no
hearth protection is required.
See the suitable backer R-Value Table. Micore is a recommended product for this application. The R-value
requirement is achieved with only ½” product. Any common building material may be used as long as the R-1
value is achieved.
The fireplace comes equipped
with a hearth finish guide 1 ½”
from the bottom of the
fireplace. If the hearth pad is
going to be thicker than 1 ½”,
the unit must be raised
accordingly.
The bottom hearth guide is
attached to the unit with plastic
rivets. The rivets can be cut with
a razor knife and the guide
removed after the hearth has
been constructed.
This fireplace may be installed
in an elevated position by
creating an elevated deck and
an appropriate framed enclosure.
Note: This fireplace may be elevated but must allow a minimum of 72” distance between this fireplace’s
floor level and the ceiling of the room.
All hearth pads must be non-combustible (metal, brick, stone, or mineral fiberboard).
•
Do not use any combustible material to protect the floor in front of this fireplace. The hearth protection pad
must be rated at R-1 minimum, and it must extend 18” in front of the fireplace face if the fireplace is installed at
floor level.
•
To achieve this required R-rating, Mendota strongly suggests that you employ ½” thick mineral/ceramic board as
the base substrate on top of the combustible floor construction or combustible raised hearth structure before you
place additional finishing materials or natural stone products to achieve an R-1.0 minimum rating. Refer to the R-
Rating specification tables in this manual.
•
For applications where you want to attach tiles or stone slabs to the mineral/ceramic board, follow the
instructions supplied by the board manufacturer.
18"
HEARTH PAD
112" THICK
MAXIMUM
R-1 MINIMUM RATING REQUIRED. USE
OF 1/2" THICK R-1 BOard AS BASE
LAYER RECOMMENDED
f i r e - p a r t s . c o m
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