Wash. Admin. Code § 51-11C-610331 - Section A103.3.1 - Single stud wall
A103.3.1 Single-stud wall. Tables A103.3.1(1) through A103.3.1(8): Assumes either 2 x 4 or 2 x 6 studs framed on 16 or 24 inch centers. Headers are solid for 2 x 4 walls and double 2x for 2 x 6 walls, with either dead-air or rigid-board insulation in the remaining space.
TABLE A103.3.1(1) |
||||||
2 x 4 Single Wood Stud: R-11 Batt |
||||||
Siding Material/Framing Type |
||||||
Lapped Wood |
T1-11 |
|||||
R-value of Foam Board |
STD |
ADV |
STD |
ADV |
||
NOTE: Nominal Batt R-value: R-11 at 3.5 inch thickness Installed Batt R-value: R-11 in 3.5 inch cavity |
0 |
0.088 |
0.084 |
0.094 |
0.090 |
|
1 |
0.080 |
0.077 |
0.085 |
0.082 |
||
2 |
0.074 |
0.071 |
0.078 |
0.075 |
||
3 |
0.069 |
0.066 |
0.072 |
0.070 |
||
4 |
0.064 |
0.062 |
0.067 |
0.065 |
||
5 |
0.060 |
0.058 |
0.063 |
0.061 |
||
6 |
0.056 |
0.055 |
0.059 |
0.057 |
||
7 |
0.053 |
0.052 |
0.055 |
0.054 |
||
8 |
0.051 |
0.049 |
0.052 |
0.051 |
||
9 |
0.048 |
0.047 |
0.050 |
0.049 |
||
10 |
0.046 |
0.045 |
0.047 |
0.046 |
||
11 |
0.044 |
0.043 |
0.045 |
0.044 |
||
12 |
0.042 |
0.041 |
0.043 |
0.042 |
TABLE A103.3.1(2) |
||||||
2 x 4 Single Wood Stud: R-13 Batt |
||||||
Siding Material/Framing Type |
||||||
Lapped Wood |
T1-11 |
|||||
R-value of Foam Board |
STD |
ADV |
STD |
ADV |
||
NOTE: Nominal Batt R-value: R-13 at 3.63 inch thickness Installed Batt R-value: R-12.7 in 3.5 inch cavity |
0 |
0.082 |
0.078 |
0.088 |
0.083 |
|
1 |
0.075 |
0.072 |
0.080 |
0.076 |
||
2 |
0.069 |
0.066 |
0.073 |
0.070 |
||
3 |
0.065 |
0.062 |
0.068 |
0.065 |
||
4 |
0.060 |
0.058 |
0.063 |
0.061 |
||
5 |
0.057 |
0.055 |
0.059 |
0.057 |
||
6 |
0.053 |
0.052 |
0.056 |
0.054 |
||
7 |
0.051 |
0.049 |
0.052 |
0.051 |
||
8 |
0.048 |
0.047 |
0.050 |
0.048 |
||
9 |
0.046 |
0.045 |
0.047 |
0.046 |
||
10 |
0.044 |
0.043 |
0.045 |
0.044 |
||
11 |
0.042 |
0.041 |
0.043 |
0.042 |
||
12 |
0.040 |
0.039 |
0.041 |
0.040 |
TABLE A103.3.1(3) |
||||||
2 x 4 Single Wood Stud: R-15 Batt |
||||||
Siding Material/Framing Type |
||||||
Lapped Wood |
T1-11 |
|||||
R-value of Foam Board |
STD |
ADV |
STD |
ADV |
||
NOTE: Nominal Batt R-value: R-15 at 3.5 inch thickness Installed Batt R-value: R-15 in 3.5 inch cavity |
0 |
0.076 |
0.071 |
0.081 |
0.075 |
|
1 |
0.069 |
0.065 |
0.073 |
0.069 |
||
2 |
0.064 |
0.061 |
0.068 |
0.069 |
||
3 |
0.060 |
0.057 |
0.063 |
0.059 |
||
4 |
0.056 |
0.053 |
0.059 |
0.056 |
||
5 |
0.053 |
0.051 |
0.055 |
0.052 |
||
6 |
0.050 |
0.048 |
0.052 |
0.050 |
||
7 |
0.047 |
0.046 |
0.049 |
0.047 |
||
8 |
0.045 |
0.044 |
0.047 |
0.045 |
||
9 |
0.043 |
0.042 |
0.044 |
0.043 |
||
10 |
0.041 |
0.040 |
0.042 |
0.041 |
||
11 |
0.039 |
0.038 |
0.041 |
0.039 |
||
12 |
0.038 |
0.037 |
0.039 |
0.038 |
TABLE A103.3.1(4) |
||||||||
2 x 6 Single Wood Stud: R-19 Batt |
||||||||
Siding Material/Framing Type |
||||||||
Lapped Wood |
T1-11 |
|||||||
R-value of Foam Board |
STD |
INT |
ADV |
STD |
INT |
ADV |
||
NOTE: Nominal Batt R-value: R-19 at 6 inch thickness Installed Batt R-value: R-18 in 5.5 inch cavity |
0 |
0.062 |
0.058 |
0.055 |
0.065 |
0.061 |
0.058 |
|
1 |
0.058 |
0.055 |
0.052 |
0.060 |
0.057 |
0.055 |
||
2 |
0.054 |
0.052 |
0.050 |
0.056 |
0.054 |
0.051 |
||
3 |
0.051 |
0.049 |
0.047 |
0.053 |
0.051 |
0.049 |
||
4 |
0.048 |
0.046 |
0.045 |
0.050 |
0.048 |
0.046 |
||
5 |
0.046 |
0.044 |
0.043 |
0.048 |
0.046 |
0.044 |
||
6 |
0.044 |
0.042 |
0.041 |
0.045 |
0.044 |
0.042 |
||
7 |
0.042 |
0.040 |
0.039 |
0.043 |
0.042 |
0.040 |
||
8 |
0.040 |
0.039 |
0.038 |
0.041 |
0.040 |
0.039 |
||
9 |
0.038 |
0.037 |
0.035 |
0.039 |
0.038 |
0.037 |
||
10 |
0.037 |
0.036 |
0.035 |
0.038 |
0.037 |
0.036 |
||
11 |
0.036 |
0.035 |
0.034 |
0.036 |
0.035 |
0.035 |
||
12 |
0.034 |
0.033 |
0.033 |
0.035 |
0.034 |
0.033 |
TABLE A103.3.1(5) |
||||||||
2 x 6 Single Wood Stud: R-21 Batt |
||||||||
Siding Material/Framing Type |
||||||||
Lapped Wood |
T1-11 |
|||||||
R-value of Foam Board |
STD |
INT |
ADV |
STD |
INT |
ADV |
||
NOTE: Nominal Batt R-value: R-21 at 5.5 inch thickness Installed Batt R-value: R-21 in 5.5 inch cavity |
0 |
0.057 |
0.054 |
0.051 |
0.060 |
0.056 |
0.053 |
|
1 |
0.054 |
0.051 |
0.048 |
0.056 |
0.053 |
0.050 |
||
2 |
0.050 |
0.048 |
0.045 |
0.052 |
0.050 |
0.047 |
||
3 |
0.048 |
0.045 |
0.043 |
0.049 |
0.047 |
0.045 |
||
4 |
0.045 |
0.043 |
0.041 |
0.047 |
0.045 |
0.043 |
||
5 |
0.043 |
0.041 |
0.040 |
0.044 |
0.042 |
0.041 |
||
6 |
0.041 |
0.039 |
0.038 |
0.042 |
0.041 |
0.039 |
||
7 |
0.039 |
0.038 |
0.036 |
0.040 |
0.039 |
0.037 |
||
8 |
0.038 |
0.036 |
0.035 |
0.039 |
0.037 |
0.036 |
||
9 |
0.036 |
0.035 |
0.034 |
0.037 |
0.036 |
0.035 |
||
10 |
0.035 |
0.034 |
0.033 |
0.036 |
0.035 |
0.033 |
||
11 |
0.033 |
0.033 |
0.032 |
0.034 |
0.033 |
0.032 |
||
12 |
0.032 |
0.031 |
0.031 |
0.033 |
0.032 |
0.031 |
TABLE A103.3.1(6) |
||||||||
2 x 6 Single Wood Stud: R-22 Batt |
||||||||
Siding Material/Framing Type |
||||||||
Lapped Wood |
T1-11 |
|||||||
R-value of Foam Board |
STD |
INT |
ADV |
STD |
INT |
ADV |
||
NOTE: Nominal Batt R-value: R-22 at 6.75 inch thickness Installed Batt R-value: R-20 in 5.5 inch cavity |
0 |
0.059 |
0.055 |
0.052 |
0.062 |
0.058 |
0.054 |
|
1 |
0.055 |
0.052 |
0.049 |
0.057 |
0.054 |
0.051 |
||
2 |
0.052 |
0.049 |
0.047 |
0.054 |
0.051 |
0.048 |
||
3 |
0.049 |
0.046 |
0.044 |
0.050 |
0.048 |
0.046 |
||
4 |
0.046 |
0.044 |
0.042 |
0.048 |
0.046 |
0.044 |
||
5 |
0.044 |
0.042 |
0.041 |
0.045 |
0.043 |
0.042 |
||
6 |
0.042 |
0.040 |
0.039 |
0.043 |
0.042 |
0.040 |
||
7 |
0.040 |
0.039 |
0.037 |
0.041 |
0.040 |
0.038 |
||
8 |
0.038 |
0.037 |
0.036 |
0.039 |
0.038 |
0.037 |
||
9 |
0.037 |
0.036 |
0.035 |
0.038 |
0.037 |
0.035 |
||
10 |
0.035 |
0.034 |
0.033 |
0.036 |
0.035 |
0.034 |
||
11 |
0.034 |
0.033 |
0.032 |
0.035 |
0.034 |
0.033 |
||
12 |
0.033 |
0.032 |
0.031 |
0.034 |
0.033 |
0.032 |
TABLE A103.3.1(7) |
||||||||
2 x 6 Single Wood Stud: Two R-11 Batts |
||||||||
Siding Material/Framing Type |
||||||||
Lapped Wood |
T1-11 |
|||||||
R-value of Foam Board |
STD |
INT |
ADV |
STD |
INT |
ADV |
||
NOTE: Nominal Batt R-value: R-22 at 7 inch thickness Installed Batt R-value: R-18.9 in 5.5 inch cavity |
0 |
0.060 |
0.057 |
0.054 |
0.063 |
0.059 |
0.056 |
|
1 |
0.056 |
0.053 |
0.051 |
0.059 |
0.056 |
0.053 |
||
2 |
0.053 |
0.050 |
0.048 |
0.055 |
0.052 |
0.050 |
||
3 |
0.050 |
0.048 |
0.046 |
0.052 |
0.049 |
0.047 |
||
4 |
0.047 |
0.045 |
0.044 |
0.049 |
0.047 |
0.045 |
||
5 |
0.045 |
0.043 |
0.042 |
0.046 |
0.045 |
0.043 |
||
6 |
0.043 |
0.041 |
0.040 |
0.044 |
0.043 |
0.041 |
||
7 |
0.041 |
0.040 |
0.038 |
0.042 |
0.041 |
0.039 |
||
8 |
0.039 |
0.038 |
0.037 |
0.040 |
0.039 |
0.038 |
||
9 |
0.038 |
0.037 |
0.036 |
0.039 |
0.038 |
0.036 |
||
10 |
0.036 |
0.035 |
0.034 |
0.037 |
0.036 |
0.035 |
||
11 |
0.035 |
0.034 |
0.033 |
0.036 |
0.035 |
0.034 |
||
12 |
0.034 |
0.033 |
0.032 |
0.034 |
0.034 |
0.033 |
TABLE A103.3.1(8) |
||||||||
2 x 8 Single Stud: R-25 Batt |
||||||||
Siding Material/Framing Type |
||||||||
Lapped Wood |
T1-11 |
|||||||
R-value of Foam Board |
STD |
INT |
ADV |
STD |
INT |
ADV |
||
NOTE: Nominal Batt R-value: R-25 at 8 inch thickness Installed Batt R-value: R-23.6 in 7.25 inch cavity |
0 |
0.051 |
0.047 |
0.045 |
0.053 |
0.049 |
0.046 |
|
1 |
0.048 |
0.045 |
0.043 |
0.049 |
0.046 |
0.044 |
||
2 |
0.045 |
0.043 |
0.041 |
0.047 |
0.044 |
0.042 |
||
3 |
0.043 |
0.041 |
0.039 |
0.044 |
0.042 |
0.040 |
||
4 |
0.041 |
0.039 |
0.037 |
0.042 |
0.040 |
0.038 |
||
5 |
0.039 |
0.037 |
0.036 |
0.040 |
0.038 |
0.037 |
||
6 |
0.037 |
0.036 |
0.035 |
0.038 |
0.037 |
0.036 |
||
7 |
0.036 |
0.035 |
0.033 |
0.037 |
0.035 |
0.034 |
||
8 |
0.035 |
0.033 |
0.032 |
0.035 |
0.034 |
0.033 |
||
9 |
0.033 |
0.032 |
0.031 |
0.034 |
0.033 |
0.032 |
||
10 |
0.032 |
0.031 |
0.030 |
0.033 |
0.032 |
0.031 |
||
11 |
0.031 |
0.030 |
0.029 |
0.032 |
0.031 |
0.030 |
||
12 |
0.030 |
0.029 |
0.028 |
0.031 |
0.030 |
0.029 |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-610331, filed 2/1/13, effective 7/1/13.
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
A103.3.1 Single-stud wall. Tables A103.3.1(1) through A103.3.1(8): Assumes either 2 x 4 or 2 x 6 studs framed on 16 or 24 inch centers. Headers are solid for 2 x 4 walls and double 2x for 2 x 6 walls, with either dead-air or rigid-board insulation in the remaining space.
TABLE A103.3.1(1) | ||||||
2 x 4 Single Wood Stud: R-11 Batt | ||||||
Siding Material/Framing Type | ||||||
Lapped Wood | T1-11 | |||||
R-value of Foam Board | STD | ADV | STD | ADV | ||
NOTE: Nominal Batt R-value: R-11 at 3.5 inch thickness Installed Batt R-value: R-11 in 3.5 inch cavity | 0 | 0.088 | 0.084 | 0.094 | 0.090 | |
1 | 0.080 | 0.077 | 0.085 | 0.082 | ||
2 | 0.074 | 0.071 | 0.078 | 0.075 | ||
3 | 0.069 | 0.066 | 0.072 | 0.070 | ||
4 | 0.064 | 0.062 | 0.067 | 0.065 | ||
5 | 0.060 | 0.058 | 0.063 | 0.061 | ||
6 | 0.056 | 0.055 | 0.059 | 0.057 | ||
7 | 0.053 | 0.052 | 0.055 | 0.054 | ||
8 | 0.051 | 0.049 | 0.052 | 0.051 | ||
9 | 0.048 | 0.047 | 0.050 | 0.049 | ||
10 | 0.046 | 0.045 | 0.047 | 0.046 | ||
11 | 0.044 | 0.043 | 0.045 | 0.044 | ||
12 | 0.042 | 0.041 | 0.043 | 0.042 |
TABLE A103.3.1(2) | ||||||
2 x 4 Single Wood Stud: R-13 Batt | ||||||
Siding Material/Framing Type | ||||||
Lapped Wood | T1-11 | |||||
R-value of Foam Board | STD | ADV | STD | ADV | ||
NOTE: Nominal Batt R-value: R-13 at 3.63 inch thickness Installed Batt R-value: R-12.7 in 3.5 inch cavity | 0 | 0.082 | 0.078 | 0.088 | 0.083 | |
1 | 0.075 | 0.072 | 0.080 | 0.076 | ||
2 | 0.069 | 0.066 | 0.073 | 0.070 | ||
3 | 0.065 | 0.062 | 0.068 | 0.065 | ||
4 | 0.060 | 0.058 | 0.063 | 0.061 | ||
5 | 0.057 | 0.055 | 0.059 | 0.057 | ||
6 | 0.053 | 0.052 | 0.056 | 0.054 | ||
7 | 0.051 | 0.049 | 0.052 | 0.051 | ||
8 | 0.048 | 0.047 | 0.050 | 0.048 | ||
9 | 0.046 | 0.045 | 0.047 | 0.046 | ||
10 | 0.044 | 0.043 | 0.045 | 0.044 | ||
11 | 0.042 | 0.041 | 0.043 | 0.042 | ||
12 | 0.040 | 0.039 | 0.041 | 0.040 |
TABLE A103.3.1(3) | ||||||
2 x 4 Single Wood Stud: R-15 Batt | ||||||
Siding Material/Framing Type | ||||||
Lapped Wood | T1-11 | |||||
R-value of Foam Board | STD | ADV | STD | ADV | ||
NOTE: Nominal Batt R-value: R-15 at 3.5 inch thickness Installed Batt R-value: R-15 in 3.5 inch cavity | 0 | 0.076 | 0.071 | 0.081 | 0.075 | |
1 | 0.069 | 0.065 | 0.073 | 0.069 | ||
2 | 0.064 | 0.061 | 0.068 | 0.069 | ||
3 | 0.060 | 0.057 | 0.063 | 0.059 | ||
4 | 0.056 | 0.053 | 0.059 | 0.056 | ||
5 | 0.053 | 0.051 | 0.055 | 0.052 | ||
6 | 0.050 | 0.048 | 0.052 | 0.050 | ||
7 | 0.047 | 0.046 | 0.049 | 0.047 | ||
8 | 0.045 | 0.044 | 0.047 | 0.045 | ||
9 | 0.043 | 0.042 | 0.044 | 0.043 | ||
10 | 0.041 | 0.040 | 0.042 | 0.041 | ||
11 | 0.039 | 0.038 | 0.041 | 0.039 | ||
12 | 0.038 | 0.037 | 0.039 | 0.038 |
TABLE A103.3.1(4) | ||||||||
2 x 6 Single Wood Stud: R-19 Batt | ||||||||
Siding Material/Framing Type | ||||||||
Lapped Wood | T1-11 | |||||||
R-value of Foam Board | STD | INT | ADV | STD | INT | ADV | ||
NOTE: Nominal Batt R-value: R-19 at 6 inch thickness Installed Batt R-value: R-18 in 5.5 inch cavity | 0 | 0.062 | 0.058 | 0.055 | 0.065 | 0.061 | 0.058 | |
1 | 0.058 | 0.055 | 0.052 | 0.060 | 0.057 | 0.055 | ||
2 | 0.054 | 0.052 | 0.050 | 0.056 | 0.054 | 0.051 | ||
3 | 0.051 | 0.049 | 0.047 | 0.053 | 0.051 | 0.049 | ||
4 | 0.048 | 0.046 | 0.045 | 0.050 | 0.048 | 0.046 | ||
5 | 0.046 | 0.044 | 0.043 | 0.048 | 0.046 | 0.044 | ||
6 | 0.044 | 0.042 | 0.041 | 0.045 | 0.044 | 0.042 | ||
7 | 0.042 | 0.040 | 0.039 | 0.043 | 0.042 | 0.040 | ||
8 | 0.040 | 0.039 | 0.038 | 0.041 | 0.040 | 0.039 | ||
9 | 0.038 | 0.037 | 0.035 | 0.039 | 0.038 | 0.037 | ||
10 | 0.037 | 0.036 | 0.035 | 0.038 | 0.037 | 0.036 | ||
11 | 0.036 | 0.035 | 0.034 | 0.036 | 0.035 | 0.035 | ||
12 | 0.034 | 0.033 | 0.033 | 0.035 | 0.034 | 0.033 |
TABLE A103.3.1(5) | ||||||||
2 x 6 Single Wood Stud: R-21 Batt | ||||||||
Siding Material/Framing Type | ||||||||
Lapped Wood | T1-11 | |||||||
R-value of Foam Board | STD | INT | ADV | STD | INT | ADV | ||
NOTE: Nominal Batt R-value: R-21 at 5.5 inch thickness Installed Batt R-value: R-21 in 5.5 inch cavity | 0 | 0.057 | 0.054 | 0.051 | 0.060 | 0.056 | 0.053 | |
1 | 0.054 | 0.051 | 0.048 | 0.056 | 0.053 | 0.050 | ||
2 | 0.050 | 0.048 | 0.045 | 0.052 | 0.050 | 0.047 | ||
3 | 0.048 | 0.045 | 0.043 | 0.049 | 0.047 | 0.045 | ||
4 | 0.045 | 0.043 | 0.041 | 0.047 | 0.045 | 0.043 | ||
5 | 0.043 | 0.041 | 0.040 | 0.044 | 0.042 | 0.041 | ||
6 | 0.041 | 0.039 | 0.038 | 0.042 | 0.041 | 0.039 | ||
7 | 0.039 | 0.038 | 0.036 | 0.040 | 0.039 | 0.037 | ||
8 | 0.038 | 0.036 | 0.035 | 0.039 | 0.037 | 0.036 | ||
9 | 0.036 | 0.035 | 0.034 | 0.037 | 0.036 | 0.035 | ||
10 | 0.035 | 0.034 | 0.033 | 0.036 | 0.035 | 0.033 | ||
11 | 0.033 | 0.033 | 0.032 | 0.034 | 0.033 | 0.032 | ||
12 | 0.032 | 0.031 | 0.031 | 0.033 | 0.032 | 0.031 |
TABLE A103.3.1(6) | ||||||||
2 x 6 Single Wood Stud: R-22 Batt | ||||||||
Siding Material/Framing Type | ||||||||
Lapped Wood | T1-11 | |||||||
R-value of Foam Board | STD | INT | ADV | STD | INT | ADV | ||
NOTE: Nominal Batt R-value: R-22 at 6.75 inch thickness Installed Batt R-value: R-20 in 5.5 inch cavity | 0 | 0.059 | 0.055 | 0.052 | 0.062 | 0.058 | 0.054 | |
1 | 0.055 | 0.052 | 0.049 | 0.057 | 0.054 | 0.051 | ||
2 | 0.052 | 0.049 | 0.047 | 0.054 | 0.051 | 0.048 | ||
3 | 0.049 | 0.046 | 0.044 | 0.050 | 0.048 | 0.046 | ||
4 | 0.046 | 0.044 | 0.042 | 0.048 | 0.046 | 0.044 | ||
5 | 0.044 | 0.042 | 0.041 | 0.045 | 0.043 | 0.042 | ||
6 | 0.042 | 0.040 | 0.039 | 0.043 | 0.042 | 0.040 | ||
7 | 0.040 | 0.039 | 0.037 | 0.041 | 0.040 | 0.038 | ||
8 | 0.038 | 0.037 | 0.036 | 0.039 | 0.038 | 0.037 | ||
9 | 0.037 | 0.036 | 0.035 | 0.038 | 0.037 | 0.035 | ||
10 | 0.035 | 0.034 | 0.033 | 0.036 | 0.035 | 0.034 | ||
11 | 0.034 | 0.033 | 0.032 | 0.035 | 0.034 | 0.033 | ||
12 | 0.033 | 0.032 | 0.031 | 0.034 | 0.033 | 0.032 |
TABLE A103.3.1(7) | ||||||||
2 x 6 Single Wood Stud: Two R-11 Batts | ||||||||
Siding Material/Framing Type | ||||||||
Lapped Wood | T1-11 | |||||||
R-value of Foam Board | STD | INT | ADV | STD | INT | ADV | ||
NOTE: Nominal Batt R-value: R-22 at 7 inch thickness Installed Batt R-value: R-18.9 in 5.5 inch cavity | 0 | 0.060 | 0.057 | 0.054 | 0.063 | 0.059 | 0.056 | |
1 | 0.056 | 0.053 | 0.051 | 0.059 | 0.056 | 0.053 | ||
2 | 0.053 | 0.050 | 0.048 | 0.055 | 0.052 | 0.050 | ||
3 | 0.050 | 0.048 | 0.046 | 0.052 | 0.049 | 0.047 | ||
4 | 0.047 | 0.045 | 0.044 | 0.049 | 0.047 | 0.045 | ||
5 | 0.045 | 0.043 | 0.042 | 0.046 | 0.045 | 0.043 | ||
6 | 0.043 | 0.041 | 0.040 | 0.044 | 0.043 | 0.041 | ||
7 | 0.041 | 0.040 | 0.038 | 0.042 | 0.041 | 0.039 | ||
8 | 0.039 | 0.038 | 0.037 | 0.040 | 0.039 | 0.038 | ||
9 | 0.038 | 0.037 | 0.036 | 0.039 | 0.038 | 0.036 | ||
10 | 0.036 | 0.035 | 0.034 | 0.037 | 0.036 | 0.035 | ||
11 | 0.035 | 0.034 | 0.033 | 0.036 | 0.035 | 0.034 | ||
12 | 0.034 | 0.033 | 0.032 | 0.034 | 0.034 | 0.033 |
TABLE A103.3.1(8) | ||||||||
2 x 8 Single Stud: R-25 Batt | ||||||||
Siding Material/Framing Type | ||||||||
Lapped Wood | T1-11 | |||||||
R-value of Foam Board | STD | INT | ADV | STD | INT | ADV | ||
NOTE: Nominal Batt R-value: R-25 at 8 inch thickness Installed Batt R-value: R-23.6 in 7.25 inch cavity | 0 | 0.051 | 0.047 | 0.045 | 0.053 | 0.049 | 0.046 | |
1 | 0.048 | 0.045 | 0.043 | 0.049 | 0.046 | 0.044 | ||
2 | 0.045 | 0.043 | 0.041 | 0.047 | 0.044 | 0.042 | ||
3 | 0.043 | 0.041 | 0.039 | 0.044 | 0.042 | 0.040 | ||
4 | 0.041 | 0.039 | 0.037 | 0.042 | 0.040 | 0.038 | ||
5 | 0.039 | 0.037 | 0.036 | 0.040 | 0.038 | 0.037 | ||
6 | 0.037 | 0.036 | 0.035 | 0.038 | 0.037 | 0.036 | ||
7 | 0.036 | 0.035 | 0.033 | 0.037 | 0.035 | 0.034 | ||
8 | 0.035 | 0.033 | 0.032 | 0.035 | 0.034 | 0.033 | ||
9 | 0.033 | 0.032 | 0.031 | 0.034 | 0.033 | 0.032 | ||
10 | 0.032 | 0.031 | 0.030 | 0.033 | 0.032 | 0.031 | ||
11 | 0.031 | 0.030 | 0.029 | 0.032 | 0.031 | 0.030 | ||
12 | 0.030 | 0.029 | 0.028 | 0.031 | 0.030 | 0.029 |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-610331, filed 2/1/13, effective 7/1/13.