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Applications > Loose-Fill Insulation > Thermal
Resistance
Perlite
Loose-Fill Insulation
Thermal Resistance for All Types of Perlite Loose
Fill Insulation
for 1-inch (0.0254m) thickness, h.ft2.F/Btu(m2.K/W)
| Mean Temp |
Density lb/ft2
(kg/m3) |
| oF (oC) |
2-4.1 (32-66) |
4.1-7.4 (66-118) |
7.4-11 (118-176) |
| -300 (-184) |
9.1-7.7 (1.6-1.4) |
7.7-6.3 (1.4-1.1) |
6.3-5.2 (1.1-0.92) |
| -200 (-129) |
6.5-5.7 (1.1-1.0) |
5.7-4.8 (1.0-0.85) |
4.8-4.0 (0.85-0.70) |
| -100 (-73) |
5.1-4.5 (0.90-0.79) |
4.5-3.8(0.79-0.67) |
3.8-3.3 (0.67-0.58 ) |
| 0 (-18 ) |
4.2-3.7 (0.74-0.65) |
3.7-3.2 (0.65-0.56) |
3.2-2.8 (0.56-0.49 ) |
| 40 (4 ) |
3.9-3.5 (0.69-0.62) |
3.5-3.0 (0.62-0.53) |
3.0-2.6 (0.53-0.46 ) |
| 75 (24) |
3.7-3.3 (0.65-0.58) |
3.3-2.8 (0.58-0.49 ) |
2.8-2.5 (0.49-0.44 ) |
| 100 (38 ) |
3.6-3.2 (0.63-0.56) |
3.2-2.8 (0.56-0.49 ) |
2.8-2.4 (0.49-0.42 ) |
| |
|
|
|
| Mean Temp |
Density lb/ft2
(kg/m3) |
| oF (oC) |
3 (48) |
8 (128) |
11(176) |
| 200 (93) |
2.5 (0.44) |
3.0 (0.53 ) |
2.3 (0.41 ) |
| 300 (149 ) |
1.9 (0.33) |
2.5 (0.44 ) |
2.0 (0.35 ) |
| 400 (204) |
1.6 (0.28) |
2.1 (0.37 ) |
1.8 (0.32 ) |
| 500 (260 ) |
1.3 (0.23) |
1.9 (0.33 ) |
1.5 (0.26 ) |
| 600 (316 ) |
1.1 (0.19) |
1.6 (0.28 ) |
1.3 (0.23 ) |
| 700 (371 ) |
0.96 (0.17) |
1.4 (0.25 ) |
1.2 (0.21 ) |
| 800 (427 ) |
0.84 (0.15) |
1.2 (0.21 ) |
1.0 (0.18 ) |
| 1000 (538 ) |
0.65 (0.11) |
0.96 (0.17 ) |
0.81 (0.14 ) |
| 1200 (649 ) |
0.52 (0.092) |
0.76 (0.13 ) |
0.63 (0.11 ) |
| 1400 (760 ) |
0.42 (0.074) |
0.60 (0.11 ) |
0.49 (0.086 ) |
|
