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Insulation Comparisons - Page 2 |
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Page 2 of 2 R-Value Table
The following R-Value Table came from the web site: http://www.allwallsystem.com/design/RValueTable.html Insulation Values For Selected Materials Use the R-value table below to help you determine the R-value of your wall or ceiling assemblies. To obtain a wall or ceiling assembly R-value you must add the r-values of the individual components together. This method ‘Wall Assembly R-Value” gives incorrect results for MASS walls such as the All Wall System. Example of error, as defined by ORNL research papers. When compared to a 6” R-20 framed Wood Wall a Foam Block (ICF) wall performed with a 9% better Energy Savings. A wall built like All Wall performed with an 18% better Energy Savings. (9% over the Foam Block walls) because of the concrete being in direct contact with the interior. See ORNL’s report conclusions by clicking here. Oakridge National Laboratory Example: Wall Assembly R-Value Example: | Component | R-value | | Wall - Outside Air Film | 0.17 | | Siding - Wood Bevel | 0.80 | | Plywood Sheathing - 1/2" | 0.63 | | 3 1/2" Fiberglass Bat | 11.00 | | 1/2" Drywall | 0.45 | | Inside Air Film | 0.68 | | Total Wall Assembly R-Value | 13.73 | R-Value Table | Material | R/
Inch | R/
Thickness | | Insulation Materials | | Fiberglass Bat | 3.14 |
| | Fiberglass Blown (attic) | 2.20 |
| | Fiberglass Blown (wall) | 3.20 |
| | Rock Wool Bat | 3.14 |
| | Rock Wool Blown (attic) | 3.10 |
| | Rock Wool Blown (wall) | 3.03 |
| | Cellulose Blown (attic) | 3.13 |
| | Cellulose Blown (wall) | 3.70 |
| | Vermiculite | 2.13 |
| | Air-entrained Concrete | 3.90 |
| | Urea terpolymer foam | 4.48 |
| | Rigid Fiberglass (> 4lb/ft3) | 4.00 |
| | Expanded Polystyrene (beadboard) | 4.00 |
| | Extruded Polystyrene | 5.00 |
| | Polyurethane (foamed-in-place) | 6.25 |
| | Polyisocyanurate (foil-faced) | 7.20 |
| | Construction Materials | | Concrete Block 4" |
| 0.80 | | Concrete Block 8" |
| 1.11 | | Concrete Block 12" |
| 1.28 | | Brick 4" common |
| 0.80 | | Brick 4" face |
| 0.44 | | Poured Concrete | 0.08 |
| | Soft Wood Lumber | 1.25 |
| | 2" nominal (1 1/2") |
| 1.88 | | 2x4 (3 1/2") |
| 4.38 | | 2x6 (5 1/2") |
| 6.88 | | Cedar Logs and Lumber | 1.33 |
| | Sheathing Materials | | Plywood | 1.25 |
| | 1/4" |
| 0.31 | | 3/8" |
| 0.47 | | 1/2" |
| 0.63 | | 5/8" |
| 0.77 | | 3/4" |
| 0.94 | | Fiberboard | 2.64 |
| | 1/2" |
| 1.32 | | 25/32" |
| 2.06 | | Fiberglass (3/4") |
| 3.00 | | (1") |
| 4.00 | | (1 1/2") |
| 6.00 | | Extruded Polystyrene (3/4") |
| 3.75 | | (1") |
| 5.00 | | (1 1/2") |
| 7.50 | | Foil-faced Polyisocyanurate
(3/4") |
| 5.40 | | (1") |
| 7.20 | | (1 1/2") |
| 10.80 | | Siding Materials | | Hardboard (1/2") |
| 0.34 | | Plywood (5/8") |
| 0.77 | | (3/4") |
| 0.93 | | Wood Bevel Lapped |
| 0.80 | | Aluminum, Steel, Vinyl
(hollow backed) |
| 0.61 | | (w/ 1/2" Insulating board) |
| 1.80 | | Brick 4" |
| 0.44 | | Interior Finish Materials | | Gypsum Board (drywall 1/2") |
| 0.45 | | (5/8") |
| 0.56 | | Paneling (3/8") |
| 0.47 | | Flooring Materials | | Plywood | 1.25 |
| | (3/4") |
| 0.93 | | Particle Board (underlayment) | 1.31 |
| | (5/8") |
| 0.82 | | Hardwood Flooring | 0.91 |
| | (3/4") |
| 0.68 | | Tile, Linoleum |
| 0.05 | | Carpet (fibrous pad) |
| 2.08 | | (rubber pad) |
| 1.23 | | Roofing Materials | | Asphalt Shingles |
| 0.44 | | Wood Shingles |
| 0.97 | | Windows | | Single Glass |
| 0.91 | | w/storm |
| 2.00 | | Double insulating glass
(3/16") air space |
| 1.61 | | (1/4" air space) |
| 1.69 | | (1/2" air space) |
| 2.04 | | (3/4" air space) |
| 2.38 | | (1/2" w/ Low-E 0.20) |
| 3.13 | | (w/ suspended film) |
| 2.77 | | (w/ 2 suspended films) |
| 3.85 | | (w/ suspended film and low-E) |
| 4.05 | | Triple insulating glass
(1/4" air spaces) |
| 2.56 | | (1/2" air spaces) |
| 3.23 | | Addition for tight fitting drapes or shades, or closed blinds |
| 0.29 | | Doors | | Wood Hollow Core Flush
(1 3/4") |
| 2.17 | | Solid Core Flush (1 3/4") |
| 3.03 | | Solid Core Flush (2 1/4") |
| 3.70 | | Panel Door w/ 7/16" Panels
(1 3/4") |
| 1.85 | | Storm Door (wood 50% glass) |
| 1.25 | | (metal) |
| 1.00 | | Metal Insulating
(2" w/ urethane) |
| 15.00 | | Air Films | | Interior Ceiling |
| 0.61 | | Interior Wall |
| 0.68 | | Exterior |
| 0.17 | | Air Spaces | | 1/2" to 4" approximately |
| 1.00 |
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