U-VALUE CHARTS - PAGE 1


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.
Go to Page 2 - U-Value Charts prepared by Delta-T, Inc.
 

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