Osburn 1100 MODEL INSERT Owner's Manual page 14

Thermal characteristics of common floor protection materials*
MATERIAL
®
Micore 160
®
Micore 300
®
Durock
®
Hardibacker
®
Hardibacker 500
®
Wonderboard
Cement mortar
Common brick
Face brick
Marble
Ceramic tile
Concrete
Mineral wool insulation
Limestone
Ceramic board (Fibremax)
Horizontal still air** (1/8")
* 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 later of horizontal still
air with another noncombustible material.
2.7 Minimum masonry opening, clearances to combustibles, and floor protector
CONDUCTIVITY
(k) PER INCH
0.39
0.49
1.92
1.95
2.3
3.23
5.00
5.00
9.00
14.3 – 20.00
12.5
1.050
0.320
6.5
0.450
0.135
14
RESISTANCE (R) PER INCH
THICKNESS
2.54
2.06
0.52
0.51
0.44
0.31
0.2
0.2
0.11
0.07 – 0.05
0.008
0.950
3.120
0.153
2.2
0,920**