|
|
U-Value of Above Grade Walls
|
|
Exterior Siding Material
|
INSULATION (Rated Values of Batts,
Etc)
|
INSULATION Nominal Value of Exterior
Sheathing (Uninsulated Cavity)
|
INSULATION Nominal Value of Exterior
Sheathing (Insulated Cavity)
|
Blown Wall Insulation Nominal Value
|
|
R0
|
R4
|
R7
|
R11
|
R19
|
R8
|
R16
|
R8
|
R16
|
R11
|
|
Frame Wall
|
Board
Siding
|
0.217
|
0.124
|
0.098
|
0.083
|
0.054
|
0.078
|
0.05
|
0.049
|
0.036
|
0.095
|
|
Plywood
Siding
|
0.291
|
0.144
|
0.11
|
0.092
|
0.058
|
0.087
|
0.054
|
0.052
|
0.038
|
0.11
|
|
Shingles
(wd, al, vinyl, ca)
|
0.186
|
0.113
|
0.091
|
0.078
|
0.052
|
0.074
|
0.048
|
0.047
|
0.035
|
0.087
|
|
Stucco
|
0.257
|
0.136
|
0.105
|
0.088
|
0.057
|
0.087
|
0.053
|
0.052
|
0.038
|
0.104
|
|
Brick
Veneer
|
0.194
|
0.116
|
0.093
|
0.079
|
0.053
|
0.081
|
0.051
|
0.05
|
0.037
|
0.089
|
|
Partition
to buffer space
|
0.234
|
0.141
|
0.107
|
0.083
|
0.053
|
0.08
|
0.019
|
0.048
|
0.035
|
0.098
|
|
Other
|
Concrete
blk, exposed
|
0.537
|
0.168
|
0.116
|
0.082
|
0.055
|
0.108
|
0.061
|
|
|
|
|
concrete,
solid, exposed
|
0.671
|
0.18
|
0.122
|
0.085
|
0.056
|
0.112
|
0.062
|
|
|
|
|
logs,
solid whole
|
0.103
|
0.072
|
0.06
|
0.049
|
0.038
|
0.056
|
0.04
|
|
|
|
|
|
|
U-Values for Residential Ceilings
|
|
Ceiling Material And Conditions
|
Insulation (Rated Value of Batts,
Etc.)
|
|
R0
|
R2
|
R4
|
R7
|
R11
|
R15
|
R19
|
R24
|
R30
|
R38
|
R49
|
|
Attic
|
Gyp
Brd/Plaster
|
0.353
|
0.21
|
0.148
|
0.108
|
0.083
|
0.069
|
0.06
|
0.048
|
0.04
|
0.036
|
0.03
|
|
Ceiling
Cable
|
0.529
|
0.295
|
0.199
|
0.142
|
0.104
|
0.087
|
0.075
|
0.061
|
0.05
|
0.044
|
0.035
|
|
Acoustic
Ceiling Tile
|
0.229
|
0.154
|
0.122
|
0.093
|
0.072
|
0.061
|
0.053
|
0.044
|
0.038
|
0.034
|
0.028
|
|
No Attic
|
Gyp
Brd/Plaster
|
0.293
|
0.183
|
0.134
|
0.097
|
0.072
|
0.058
|
0.049
|
0.041
|
0.035
|
0.028
|
-
|
|
Ceiling
Cable
|
0.44
|
0.255
|
0.177
|
0.122
|
0.089
|
0.072
|
0.059
|
0.049
|
0.041
|
0.031
|
-
|
|
Acoustic
Ceiling Tile
|
0.202
|
0.144
|
0.112
|
0.086
|
0.065
|
0.053
|
0.046
|
0.038
|
0.033
|
0.025
|
-
|
|
Exposed
Wood Deck
|
Wood
Shingles
|
0.258
|
0.158
|
0.12
|
0.088
|
0.065
|
0.053
|
0.046
|
0.037
|
0.03
|
-
|
-
|
|
Built-Up
Roof
|
0.317
|
0.197
|
0.139
|
0.094
|
0.068
|
0.055
|
0.048
|
0.038
|
0.031
|
-
|
-
|
|
|
Floor U-Values
|
|
Vented Crawl Space Condition
|
Insulation (Rated Values of Batts,
Etc.)
|
|
R0
|
R4
|
R7
|
R11
|
R19
|
R30
|
|
No Ducts
|
0.142
|
0.091
|
0.072
|
0.057
|
0.041
|
0.031
|
|
With Ducts
|
No Duct Insulation
|
0.115
|
0.075
|
0.06
|
0.048
|
0.035
|
0.026
|
|
With Duct Insulation
|
0.131
|
0.086
|
0.069
|
0.055
|
0.04
|
0.03
|
|
|
|
Values for Windows & Sliding Glass Doors
|
|
Window Type
|
Frame Type
|
|
Wood
|
Metal
|
Thermally Improved Metal
|
|
Single
Glass
|
0.96
|
1.1
|
1.01
|
|
Single
Glass Plus Storm Window*
|
0.48
|
0.66
|
0.57
|
|
Insulating
Glass, Double:
|
|
|
|
|
1/4"
air space
|
0.55
|
0.71
|
0.66
|
|
3/8"
air space
|
0.51
|
0.66
|
0.6
|
|
1/2"
air space
|
0.47
|
0.61
|
0.54
|
|
Insulating
Glass, Triple:
|
|
|
|
|
1/4"
air space
|
0.37
|
0.57
|
0.47
|
|
3/8"
air space
|
0.34
|
0.51
|
0.42
|
|
1/2"
air space
|
0.3
|
0.45
|
0.37
|
|
|
© 2002-2008 Delta-T, Inc.
|
This page was last updated on 26-Feb-2008