Insulation Calculator
Existing Type
<select>
Cellulose (Loose Fill)
Fiberglass (Batts)
Fiberglass (Loose Fill)
Polystyrene Boards (Open Cell)
Polyurethane Foam (Closed Cell)
Polyurethane Foam (Open Cell)
Rock Wool (Loose Fill)
Rockwool (Batts)
Existing Inches
<select>
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
5.75
6
6.25
6.5
6.75
7
7.25
7.5
7.75
8
8.25
8.5
8.75
9
9.25
9.5
9.75
10
10.25
10.5
10.75
11
11.25
11.5
11.75
12
12.25
12.5
12.75
13
13.25
13.5
13.75
14
14.25
14.5
14.75
15
15.25
15.5
15.75
16
16.25
16.5
16.75
17
17.25
17.5
17.75
18
18.25
18.5
18.75
19
19.25
19.5
19.75
20
20.25
20.5
20.75
21
21.25
21.5
21.75
22
22.25
22.5
22.75
23
23.25
23.5
23.75
24
24.25
24.5
24.75
25
25.25
25.5
25.75
26
26.25
26.5
26.75
27
27.25
27.5
27.75
28
28.25
28.5
28.75
29
29.25
29.5
29.75
30
30.25
30.5
30.75
31
31.25
31.5
31.75
32
32.25
32.5
32.75
33
33.25
33.5
33.75
34
Existing R-Value
Desired R-Value
<select>
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
New Type
<select>
Cellulose (Loose Fill)
Fiberglass (Batts)
Fiberglass (Loose Fill)
Polystyrene Boards (Open Cell)
Polyurethane Foam (Closed Cell)
Polyurethane Foam (Open Cell)
Rock Wool (Loose Fill)
Rockwool (Batts)
Required Inches