Matrix
Insert
Installation
and
Operation
Manual
38
______________________________________________________________________________
Thermal
Characteristics
of
Common
Floor
Protection
Materials*
MATERIAL
CONDUCTIVITY
(k)
PER
INCH
RESISTANCE
(R)
PER
INCH
THICKNESS
Micore
®
160
0.39
2.54
Micore
®
300
0.49
2.06
Durock
®
1.92
0.52
Hardibacker
®
1.95
0.51
Hardibacker
®
500
2.3
0.44
Wonderboard
®
3.23
0.31
Cement
mortar
5.00
0.2
Common
brick
5.00
0.2
Face
brick
9.00
0.11
Marble
14.3
–
20.00
0.07
–
0.05
Ceramic
tile
12.5
0.008
Concrete
1.050
0.950
Mineral
wool
insulation
0.320
3.120
Limestone
6.5
0.153
Ceramic
board
(Fibremax)
0.450
2.2
Horizontal
still
air**
(1/8")
0.135
0,920**
*
Information
as
reported
by
manufacturers
and
other
resources
**
For
a
1/8"
thickness.
You
cannot
«stack»
horizontal
still
air
to
accumulate
R
‐
values;
you
must
separate
each
layer
of
horizontal
still
air
with
another
non
‐
combustible
material.
The
standard
configuration
of
the
insert
leaves
no
projection
of
the
convection
air
jacket
in
front
of
the
fireplace
opening
.
Therefore
the
minimum
projection
is
0''
.
Although
i
t
is
possible
to
position
the
insert
to
obtain
a
projection
of
2''
(
51
mm
)
or
4''
(
102
mm
)
of
the
convection
air
jacket
in
front
of
the
fireplace
opening
with
the
use
of
the
“PROJECTION
KIT”
option
AC01323
.
The
choice
of
the
configuration
will
depend
on
,
the
previous
installation
instructions
and
compliance
with
building
code
.
To
determine
the
minimum
and
maximum
projection
of
the
insert,
refer
to
table
Data
for
floor
protection
calculation
.
