|
Wall Selection
|
|
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R Values
STEP 1: Select the combination of structural products with the respective systems thermal resistance value:
WALL
SYSTEM
|
SP
|
HP
|
E5P
|
Exterior sheating
|
7/16"
Sheating
|
HP
|
EXCEL 1/2"
|
Interior
assembly
|
Poly/Gypsum
|
|
|
|
|
Exterior
air film
|
0.17
|
0.17
|
0.17
|
Exterior
cladding
|
0.43
|
0.43
|
0.43
|
Strapping/
air (brick)
|
0.96
|
0.96
|
0.96
|
Air barrier
|
0.06
|
0.06
|
0.06
|
Exterior
sheating
|
1.3
|
1.5
|
1.5
|
2X6 studs
|
7.15
|
7.15
|
7.15
|
Fiberglass
|
20
|
20
|
20
|
Interior
sheating
|
0
|
0
|
0
|
Vapour
barrier
|
0
|
0
|
0
|
Air
(strapping)
|
0
|
0
|
0
|
Gypsum
|
0.46
|
0.46
|
0.46
|
Interior
air film
|
0.68
|
0.68
|
0.68
|
|
|
|
|
R Nominal
|
24.06
|
24.26
|
24.26
|
R Frame
|
11.21
|
11.41
|
11.41
|
R Effective 16"
|
19.76
|
19.98
|
19.98
|
R Effective 24"
|
21.37
|
21.59
|
21.59
|
|
|
|
|
R "over stud"
|
4.06
|
4.26
|
4.26
|
WALL
SYSTEM
|
SE
|
HE
|
E5E
|
|
|
Exterior
sheating
|
7/16"
Sheating
|
H.P.
|
EXCEL 1/2"
|
Polystyrene
1 "
|
OSB 7/16"
|
Interior
assembly
|
ENERMAX
|
Poly/Gypsum
|
|
|
|
|
|
|
Exterior
air film
|
0.17
|
0.17
|
0.17
|
0.17
|
0.17
|
Exterior
cladding
|
0.43
|
0.43
|
0.43
|
0.43
|
0.43
|
Strapping/
air (brick)
|
0.96
|
0.96
|
0.96
|
0.96
|
0.96
|
Air barrier
|
0.06
|
0.06
|
0.06
|
0.06
|
0.06
|
Exterior
sheating
|
1.3
|
1.5
|
1.5
|
5
|
0.57
|
2X6 studs
|
7.15
|
7.15
|
7.15
|
7.15
|
7.15
|
Fiberglass
|
20
|
20
|
20
|
20
|
20
|
Interior
sheating
|
4.7
|
4.7
|
4.7
|
0
|
0
|
Vapour
barrier
|
0
|
0
|
0
|
0
|
0
|
Air
(strapping)
|
0
|
0
|
0
|
0
|
0
|
Gypsum
|
0.46
|
0.46
|
0.46
|
0.46
|
0.46
|
Interior
air film
|
0.68
|
0.68
|
0.68
|
0.68
|
0.68
|
|
|
|
|
|
|
R Nominal
|
28.76
|
28.96
|
28.96
|
27.76
|
23.33
|
R Frame
|
15.91
|
16.11
|
16.11
|
14.91
|
10.48
|
R Effective 16"
|
24.93
|
25.15
|
25.15
|
23.85
|
18.92
|
R Effective 24"
|
26.41
|
26.62
|
26.62
|
25.36
|
20.56
|
|
|
|
|
|
|
R "over stud"
|
8.76
|
8.96
|
8.76
|
7.76
|
3.33
|
Go on to STEP 2: Costs
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