Masonry Magazine October 1986 Page. 24
TABLE 4 R-Values
Walls Constructed of 8" Hollow C.M.U.
Details of Construction
Density, lb/cu. ft.
60
80 100
120
140
(1) No Insulation
3.6
3.0
2.6
2.3
2.0
(2) Cores filled with Vermiculite
9.6
7.6
6.0
4.7
3.6
(3) Cores filled with Perlite
10.4
8.2
6.3
4.8
3.7
(4) No insul., ½" gypsum board on furring
5.0
4.4
4.0
3.7
3.4
(5) No insul., ½" foil back gypsum board on furring
6.6
6.0
5.6
5.3
5.0
(6) Same as (4) w/1" Extruded Polystyrene
8.6
8.0
7.6
7.3
7.0
(7) Same as (4) w/2" Expanded Polystyrene
11.6
11.0
10.6
10.3 10.0
(8) Same as (4) w/2" Extruded Polystyrene
13.6
13.0
12.6
12.3
12.0
(9) Same as (4) w/2" Polyisocyanurate
18.0
17.4
17.0
16.7
16.4
(10) Same as (4) R-11 fibrous batt 2 x 3 studs set out from wall
14.6
14.0
13.6
13.3 13.0
(11) Same as (4) R-13 fibrous batt 2 x 3 studs set out from wall
16.6
16.0
15.6
15.3
15.0
(12) Same as (4) R-19 fibrous batt 2 x 4 studs set out from wall
22.6
22.0
21.6
21.3 21.0
TABLE 5 R-Values
Walls Constructed of 10" Hollow C.M.U.
Details of Construction
Density, lb/cu. ft.
60
80
100
120
140
(1) No Insulation
3.8
3.2
2.7
2.4
2.1
(2) Cores filled with Vermiculite
11.8
9.3
7.2
5.5
4.2
(3) Cores filled with Perlite
12.9 10.0
7.6
5.7
4.3
(4) No insul., 1½" gypsum board on furring
5.2
4.6
4.1
3.8
3.5
(5) No insul., 1½" foil back gypsum board on furring
6.8
6.2
5.7
5.4
5.1
(6) Same as (4) w/1" Extruded Polystyrene
8.8
8.2
7.7
7.4
7.1
(7) Same as (4) w/2" Expanded Polystyrene
11.8 11.2
10.7 10.4 10.1
(8) Same as (4) w/2" Extruded Polystyrene
13.8 13.2 12.7
12.4
12.1
(9) Same as (4) w/2" Polyisocyanurate
18.2
17.6
17.1 16.8 16.5
(10) Same as (4) R-11 fibrous batt 2 x 3 studs set out from wall
14.8
14.2
13.7
13.4
13.1
(11) Same as (4) R-13 fibrous batt 2x3 studs set out from wall
16.8 16.2 15.7
15.4 15.1
(12) Same as (4) R-19 fibrous batt 2 x 4 studs set out from wall
22.8
22.2 21.7 21.4
21.2