Material | Nominal Size (in.) | Actual Size (in.) | R-Value (Heat Capacityc) |
Air cavity (unventilated), between metal studs at 16 inches on centera | - | - | 0.79 |
Air cavity (unventilated), all other depths and framing materials1 | - | - | 0.91 |
Airfilm, exterior surfacesb | - | - | 0.17 |
Airfilm, interior horizontal surfaces, heat flow upb | - | - | 0.61 |
Airfilm, interior horizontal surfaces, heat flow downb | - | - | 0.92 |
Airfilm, interior vertical surfacesb | - | - | 0.68 |
Brick at R-0.12/in. (face brick, 75% solid/25% core area, 130 lbs/ft3) | 4 | 3.5 | 0.32 (5.9) |
Carpet and rubber pad | - | - | 1.23 |
Concretec at R-0.0625/in., heavyweight (144 lbs/ft3) | - | 2 | 0.13 (HC-4.8) |
| - | 4 | 0.25 (HC-9.6) |
| - | 6 | 0.38 (HC-14.4) |
| - | 8 | 0.50 (HC-19.2) |
| - | 10 | 0.63 (HC-24.0) |
| - | 12 | 0.75 (HC-28.8) |
Concrete masonry units, solid grouted, lightweight (95 lbs/ft3) | 6 | - | 0.80 (HC-11.4) |
Concrete masonry units, solid grouted, normal weight (135 lbs/ft3) | 6 | - | 0.51 (HC-13.2) |
Concrete masonry units, partly grouted, lightweight (95 lbs/ft3) | 6 | - | 1.33 (HC-6.7) |
Concrete masonry units, partly grouted, normal weight (135 lbs/ft3) | 6 | - | 0.82 (HC-9.0) |
Concrete masonry units, solid grouted, lightweight (95 lbs/ft3) | 8 | - | 1.05 (HC-15.5) |
Concrete masonry units, solid grouted, normal weight (135 lbs/ft3) | 8 | - | 0.69 (HC-17.9) |
Concrete masonry units, partly grouted, lightweight (95 lbs/ft3) | 8 | - | 1.44 (HC-9.6) |
Concrete masonry units, partly grouted, normal weight (135 lbs/ft3) | 8 | - | 0.98 (HC-12.0) |
Concrete masonry units, solid grouted, lightweight (95 lbs/ft3) | 10 | - | 1.30 (HC-19.7) |
Concrete masonry units, solid grouted, normal weight (135 lbs/ft3) | 10 | - | 0.87 (HC-22.6) |
Concrete masonry units, partly grouted, lightweight (95 lbs/ft3) | 10 | - | 1.61 (HC-11.9) |
Concrete masonry units, partly grouted, normal weight (135 lbs/ft3) | 10 | - | 1.11 (HC-14.8) |
Concrete masonry units, solid grouted, lightweight (95 lbs/ft3) | 12 | - | 1.53 (HC-23.9) |
Concrete masonry units, solid grouted, normal weight (135 lbs/ft3) | 12 | - | 1.06 (HC-27.2) |
Concrete masonry units, partly grouted, lightweight (95 lbs/ft3) | 12 | - | 1.75 (HC-14.2) |
Concrete masonry units, partly grouted, normal weight (135 lbs/ft3) | 12 | - | 1.23 (HC-17.5) |
Flooring, wood subfloor | - | 0.75 | 0.94 |
Gypsum board | - | 0.5 | 0.45 |
| - | 0.625 | 0.56 |
Metal deck | - | - | 0 |
Roofing, built-up | - | 0.375 | 0.33 |
Sheathing, vegetable fiber board, 0.78 in. | - | 0.78 | 2.06 |
Soil at R-0.104/in. | - | 12 | 1.25 |
Steel, mild | | 1 | 0.0031807 |
Stucco | - | 0.75 | 0.08 |