Structural Insulated Panel R-value comparison
Raw R-values
| Panel Thickness
(inches)
|
ACME Panel R-values |
Stick built w/ fiberglass insulation |
ACME advantage |
| 4.5 |
16 |
12 |
34% |
| 6.5 |
24 |
19 |
29% |
| 8.25 |
32 |
25 |
26% |
| 10.25 |
40 |
32 |
25% |
| 12.25 |
48 |
38 |
27% |
Whole wall R-values — highest-quality fiberglass install (not typical on a jobsite)
| Wall Thickness
(inches)
|
ACME Panel R-values |
Stick built w/ fiberglass insulation |
ACME advantage |
| 4.5 |
14 |
10 |
43% |
| 6.6 |
21 |
14 |
53% |
| 8.25 |
27 |
18 |
53% |
| 10.25 |
34 |
22 |
58% |
| 12.25 |
41 |
25 |
61% |
Whole wall R-values — typical jobsite install (some rounded corners, compression, gaps, etc.)
| Wall Thickness
(inches)
|
ACME Panel R-values |
Stick built w/ fiberglass insulation |
ACME advantage |
| 4.5 |
14 |
8 |
78% |
| 6.6 |
21 |
11 |
91% |
| 8.25 |
27 |
14 |
91% |
| 10.25 |
34 |
17 |
97% |
| 12.25 |
41 |
20 |
101% |
- But ACME Panel SIPs are better still at energy savings!
Air Infiltration — Comparative tests done by Oak Ridge National Laboratories show that a 2,600 sqft. house made out of SIPs was 5 times more airtight than an identical house made with traditional framing and fiberglass.
- REMEMBER: Fiberglass R-values go down as temperatures go down
Studies conducted by the Department of Energy show that fiberglass insulation in an attic rated at R-19 performed at R-9 when temperatures outside dropped to -8°F due to convective currents within the insulation.
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