Solution 1.8 Insert Installation and Operation Manual 35
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.
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