|
Current insulation levels in existing single-family homes by census division [13] (batt insulation assumed for all). |
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| NE |
MA |
SA |
ESC |
WSC |
ENC |
WNC |
MTN |
PA |
|
|
|
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| Ceiling |
R-30 |
R-30 |
R-11 |
R-11 |
R-11 |
R-19 |
R-19 |
R-19 |
R-1 |
| Above-grade wall |
R-11 |
R-11 |
R-6 |
R-6 |
R-6 |
R-11 |
R-11 |
R-11 |
R-6 |
| Floor |
R-13 |
R-13 |
R-3.4 |
R-3.4 |
R-3.4 |
R-11 |
R-11 |
R-11 |
R-5.5 |
|
Definitions of census divisions: NE (Northeast): MA, ME, NH, VT, RI, CT; MA (Mid-Atlantic): NY, PA, NJ; SA (South-Atlantic): MD, VA, WV, DC, NC, SC, GA, FL; ESC (East-South-Central): AL, MS, KY, TN; WSC (West-South-Central): TX, OK, AR, LA; ENC (East-North-Central): MI, IL, OH, IN, WI; WNC (West-North-Central): MO, IA, MN, SD, ND, NE, KS; MTN (Mountain): ID, MT, NV, AZ, NM, UT, CO, WY; PA (Pacific): CA, OR, WA. Note: The R-value represents the resistance of the insulation to heat flow, with higher values indicating greater resistance. R-values are given in units of °F.ft2.h/BTU. | |||||||||
Levy et al. Environmental Health: A Global Access Science Source 2003 2:4 doi:10.1186/1476-069X-2-4 |
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