SPECIFIC THERMAL RESISTANCE OF VARIOUS MATERIALS
Roberto Escardo May 2003
  Material Density of Material in kg/m Specific Heat Material Specific Thermal Conductivity Specific Thermal Resistance Rm
  Ce= l = SI units B units
      J/kg*K W/m*K m*K/W ft2*h*F/BTU*in
  Conversion factor       1.00 0.1442
1 Expanded polypropylene 20   0.02 50.00 7.21
2 Polyurethane (foamed-in-place)     0.02 43.34 6.25
3 Air, low humidity 1   0,026 - 0,023 40.00 5.77
4 Autoclaved Aerated Concrete     0.04 27.05 3.90
5 Rock wool/glass wool 150   0.04 25.00 3.61
6 Perlite     0,04-0,06 19.28 2.78
7 Rock wool on expanded metal 200   0.06 16.67 2.40
8 Wood wool, loose 150   0.06 15.62 2.25
9 Vermiculite     0,06-0,08 14.77 2.13
10 Straw or thatch 240   0,07 - 0,08 13.33 1.92
11 Wood shavings, loosely packed 250   0.08 12.50 1.80
12 Sawdust, loose 270   0.09 11.76 1.70
DA 13 50/50 sawdust/clay 729 701 0.08 12.34 1.78
14 Softboard, low density 300   0.10 10.00 1.44
DA 15 Pumice brick 770 835 0.107 9.35 1.35
DA 16 85% vermiculite 15% clay 559 698 0.12 8.33 1.20
DA 17 85% pearlite 15% clay Fired 1400F 439 921 0.13 7.81 1.13
18 Plywood, multiplex 530   0,138 - 0,116 8.33 1.20
19 Medium Density Fibre (MDF) 500-600   0.14 7.14 1.03
20 Hardboard medium quality, paper 570   0.14 7.14 1.03
DA 21 El Coco Baldosa 1328 835 0.181 5.52 0.80
22 Wood 817   0,138 - 0,233 4.29 0.62
DA 23 Guatamalan Baldosa 1691 812 0.219 4.57 0.66
24 Chipwood panels, low density 450   0.25 4.00 0.58
25 Fibre cement, Eternit 800   0.30 3.33 0.48
26 Soil-grass (dry 1:1) lime water bonded and compacted 1000   0,35 Estimated 2.86 0.41
27 Terrazzo floors 1500   0.41 2.44 0.35
28 Adobe blocks 1100   0.48 2.08 0.30
29 Water 1000   0.58 1.72 0.25
30 Soil-cement mortar (10:1) 1400   0.60 1.67 0.24
31 Cement blocks, solid, low quality 2000   0.65 1.54 0.22
DA 32 Ordinary Brick 1600 840 0.7 1.43 0.21
33 Soil, not compacted, 1300   0.71 1.41 0.20
34 Soil-stabilised, compacted, dry 1400   0,75 Estimated 1.33 0.19
35 Low quality concrete, 2100   1.70 0.56 0.08
36 Stone, solid granite 2500   2,8-2,9 0.35 0.05
37 Corrugated metal sheet, steel 7800   50 - 58 0.02 0.00