Masonry Magazine October 1986 Page. 25
TABLE 2 R-Values
Walls Constructed of 4" Hollow C.M.U.
Density, lb/cu. ft.
Details of Construction
60
80 100
120
140
(1) No Insulation
2.8
2.4
2.2
1.9
1.7
(2) Cores filled with Vermiculite
4.9
4.1
3.4
2.7
2.2
(3) Cores filled with Perlite
5.4
4.4
3.5
2.8 2.3
(4) No insul., ½" gypsum board on furring
4.2
3.8
3.6
3.3 3.1
(5) No insul., 1½" foil back gypsum board on furring
5.8
5.4
5.2
4.9
4.7
(6) Same as (4) w/I" Extruded Polystyrene
7.8
7.4
7.2
6.9
6.7
(7) Same as (4) w/2" Expanded Polystyrene
10.8
10.4 10.2
9.9
9.7
(8) Same as (4) w/2" Extruded Polystyrene
12.8
12.4
12.2
11.9 11.7
(9) Same as (4) w/2" Polyisocyanurate
17.2
17.4
17.2
16.3 16.1
(10) Same as (4) R-11 fibrous batt 2x3 studs set out from wall
13.8
13.4 13.2
12.9 12.7
(11) Same as (4) R-13 fibrous batt 2 x 3 studs set out from wall
15.8
15.4 15.2
14.9 14.7
(12) Same as (4) R-19 fibrous batt 2x4 studs set out from wall
21.8
21.4
21.2
20.9 20.7
TABLE 3 R-Values
Walls Constructed of 6" Hollow C.M.U.
Density, lb/cu. ft.
Details of Construction
60
80
100
120
140
(1) No Insulation
3.2
2.7
2.4
2.1
1.9
(2) Cores filled with Vermiculite
7.1
5.7
4.5
3.6
2.8
(3) Cores filled with Perlite
7.8
6.1
4.8
3.7
2.9
(4) No insul., 1½" gypsum board on furring
4.6
4.1
3.8
3.5
3.3
(5) No insul., 1½" foil back gypsum board on furring
6.2
5.7
5.4
5.1
4.9
(6) Same as (4) w/1" Extruded Polystyrene
8.2
7.7
7.4
7.1
6.9
(7) Same as (4) w/2" Expanded Polystyrene
11.2 10.7 10.4
10.1
9.9
(8) Same as (4) w/2" Extruded Polystyrene
13.2 12.7 12.4 12.1 11.9
(9) Same as (4) w/2" Polyisocyanurate
17.6 17.1 16.8 16.5 16.3
(10) Same as (4) R-11 fibrous batt 2 x 3 studs set out from wall
14.2
13.7
13.4 13.1 12.9
(11) Same as (4) R-13 fibrous batt 2x 3 studs set out from wall
16.2 15.7
15.4
15.1
14.9
(12) Same as (4) R-19 fibrous batt 2x4 studs set out from wall
22.2
21.7
21.4 21.1
20.9