|
|
|
Still Air |
|
R-5 (0.88) |
|
Still Air with convective currents |
R-1 (0.18) (or less) |
R-5 (0.88) (Still) |
|
Wood chips and other loose-fill wood Products |
R-1 (0.18) |
|
|
Snow |
R-1 (0.18) |
|
|
Straw bale |
R-1.45 (0.26) |
|
|
Wood panels, such as sheathing |
R-2.5 (0.44) |
|
|
Vermiculite loose-fill |
R-2.13 (0.38) |
R-2.4 (0.42) |
|
Perlite loose-fill |
R-2.7 (0.48) |
|
|
Rock and slag wool loose-fill |
R-2.5 (0.44) |
R-3.7 (0.65) |
|
Rock and slag wool batts |
R-3 (0.52) |
R-3.85 (0.68) |
|
Fiberglass loose fill |
R-2.5 (0.44) |
R-3.7 (0.65) |
|
Fiberglass rigid panel |
R-2.5 (0.44) |
|
|
Fiberglass batts |
R-3.6 (0.63) |
R-4.3 (0.76) |
|
High-density fiberglass batts |
R-3.6 (0.63) |
R-5 (0.88) |
|
Cementitious foam |
R-2 (0.35) |
R-3.9 (0.69) |
|
Cellulose loose-fill |
R-3 (0.52) |
R-3.8 (0.67) |
|
Cellulose wet-spray |
R-3 (0.52) |
R-3.8 (0.67) |
|
Cotton batts (Blue Jean Insulation) |
R-3.7 (0.65) |
|
|
Icynene spray |
R-3.6 (0.63) |
|
|
Icynene loose-fill (pour fill) |
R-4 (0.70) |
|
|
Urea-formaldehyde foam |
R-4 (0.70) |
R-4.6 (0.81) |
|
Urea-formaldehyde panels |
R-5 (0.88) |
R-6 (1.06) |
|
Polyethylene foam |
R-3 (0.52) |
|
|
Phenolic spray foam |
R-4.8 (0.85) |
R-7 (1.23) |
|
Phenolic rigid panel |
R-4 (0.70) |
R-5 (0.88) |
|
Molded expanded polystyrene (EPS) low-density |
R-3.7 (0.65) |
|
|
Molded expanded polystyrene (EPS) high-density |
R-4 (0.70) |
|
|
Extruded expanded polystyrene (XPS) low-density |
R-3.6 (0.63) |
R-4.7 (0.82) |
|
Extruded expanded polystyrene (XPS) high-density |
R-5 (0.88) |
R-5.4 (0.95) |
|
Open-cell polyurethane spray foam |
R-3.6 (0.63) |
|
|
Closed-cell polyurethane spray foam |
R-5.5 (0.97) |
R-6.5 (1.14) |
|
Polyurethane rigid panel (Pentane expanded) initial |
R-6.8 (1.20) |
|
|
Polyurethane rigid panel (Pentane expanded) aged 5-10 years |
R-5.5 (0.97) |
|
|
Polyurethane rigid panel (CFC/HCFC expanded) initial |
R-7 (1.23) |
R-8 (1.41) |
|
Polyurethane rigid panel (CFC/HCFC expanded) aged 5-10 years |
R-6.25 (1.10) |
|
|
Polyisocyanurate spray foam |
R-4.3 (0.76) |
R-8.3 (1.46) |
|
Foil-faced polyisocyanurate rigid panel (Pentane expanded ) initial |
R-6.8 (1.20) |
|
|
Foil-faced polyisocyanurate rigid panel (Pentane expanded) aged 5-10 years |
R-5.5 (0.97) |
|
|
Silica aerogel |
R-10 (1.76) |
|
|
Vacuum insulated panel |
R-30 (5.28) |
R-50 (8.80) |
|
Cardboard |
R-3 (0.52) |
R-4 (0.70) |
|
Thinsulate clothing insulation |
R-5.75 (1.01) |
|